Matlab 2012 IEEE projects

6,286 views

Published on

2012 IEEE MATLAB projects with 100 % implementation with documents

Published in: Education
3 Comments
1 Like
Statistics
Notes
  • Global Techno solutions in Chennai do good projects and also provide a short training.
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • thanks
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • http://www.matlabassignmentexperts.com/
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
No Downloads
Views
Total views
6,286
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
128
Comments
3
Likes
1
Embeds 0
No embeds

No notes for slide

Matlab 2012 IEEE projects

  1. 1. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 ACTIVE POWER FILTER BASED ON CASCADED TRANSFORMER MULTILEVEL INVERTERABSTRACT : The widespread increase of non-linear loads nowadays, significant amounts of harmoniccurrents are being injected into power systems. Harmonic currents flow through the powersystem impedance, causing voltage distortion at the harmonic currents’ frequencies. Thedistorted voltage waveform causes harmonic currents to be drawn by other loads connected at thepoint of common coupling (PCC). The use of grid connected power electronic converters to improve power quality inpower distribution systems represents the best solution, in terms of performance and stability, forthe elimination of harmonic distortion, power factor correction, balancing of loads, and voltageregulation. The traditional method of current harmonics reduction involves passive LC filters,which are its simplicity and low cost. However, passive filters have several drawbacks such aslarge size, tuning and risk of resonance problems In this project, we propose an APF based on cascaded H-bridge multilevel converterwhich employs one single dc input power source and isolated single-phase low-frequencytransformers. By the proposed circuit configuration, a number of dc-link can be reduced,compared with traditional APF based on cascaded H-bridge multilevel converter. With this typeof topology, higher voltage levels can be achieved, making the proposed topology suitable forcompensation of medium and high voltage power distribution systems. A simple control schemeis used for the correct operation of inverter and compensation demands. The current referencerequired can be obtained allowing the generation of the total compensating current and theabsorption of the needed active power to compensate converter losses and to keep the dcvoltages constant. Simulated results carried out by MATLAB/Simulink program for steady-state
  2. 2. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88and transient operating conditions prove the compensation effectiveness of the proposed scheme.Simulation results show the validity and effectiveness of presented active power filter forcompensation of harmonic currents, reactive power and unbalance currents. A PRACTICAL TECHNIQUE FOR POWER QUALITY IMPROVEMENT FOR SINGLE PHASE INDUCTION MACHINESABSTRACT : Most of the electrical loads in our daily life are single phase as well as inductive. Singlephase induction machines are one of the many reasons for poor quality power supply along withsome concerns on torque requirements, accelerating time, starting current, and dip in voltage andharmonics in input current. During starting, power supply is more adversely affected. When single motors at homes are started, a visible fluctuation in lights is observed. Thisis due to the poor quality of power during starting of single phase induction motor. When themotor is started, it draws high starting current. This high current cause’s dip in the voltage duringstarting intervals, because there is a lot of voltage drop across the distribution conductor. This project presents an analysis of all the above mentioned problems along with apractical way to mitigate them. In this project, induction motor under test is the capacitor runmotor. In this project a practical approach is presented using classical LC circuit techniques.The results and tests performed before and after application of the proposed solution have beenanalyzed and presented. The frequency, running current waveform current components in timedomain are simulated using MATLAB/Simulink software, The conclusions presented in this
  3. 3. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88paper will stimulate and direct future research work for maintaining high quality power supplyduring starting of induction machine. ACTIVE POWER FILTER BASED ON CASCADED TRANSFORMER MULTILEVEL INVERTERABSTRACT : The widespread increase of non-linear loads nowadays, significant amounts of harmoniccurrents are being injected into power systems. Harmonic currents flow through the powersystem impedance, causing voltage distortion at the harmonic currents’ frequencies. Thedistorted voltage waveform causes harmonic currents to be drawn by other loads connected at thepoint of common coupling (PCC). The use of grid connected power electronic converters to improve power quality inpower distribution systems represents the best solution, in terms of performance and stability, forthe elimination of harmonic distortion, power factor correction, balancing of loads, and voltageregulation. The traditional method of current harmonics reduction involves passive LC filters,
  4. 4. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88which are its simplicity and low cost. However, passive filters have several drawbacks such aslarge size, tuning and risk of resonance problems In this project, we propose an APF based on cascaded H-bridge multilevel converterwhich employs one single dc input power source and isolated single-phase low-frequencytransformers. By the proposed circuit configuration, a number of dc-link can be reduced,compared with traditional APF based on cascaded H-bridge multilevel converter. With this typeof topology, higher voltage levels can be achieved, making the proposed topology suitable forcompensation of medium and high voltage power distribution systems. A simple control schemeis used for the correct operation of inverter and compensation demands. The current referencerequired can be obtained allowing the generation of the total compensating current and theabsorption of the needed active power to compensate converter losses and to keep the dcvoltages constant. Simulated results carried out by MATLAB/Simulink program for steady-stateand transient operating conditions prove the compensation effectiveness of the proposed scheme.Simulation results show the validity and effectiveness of presented active power filter forcompensation of harmonic currents, reactive power and unbalance currents. A COMPARISON OF SYMMETRICAL AND ASYMMETRICAL THREE-PHASE H-BRIDGE MULTILEVEL INVERTER FOR DTC INDUCTION MOTOR DRIVESABSTRACT : Multilevel voltage-source inverters are intensively studied for high-power applicationsand standard drives for medium-voltage industrial applications have become available Solutionswith a higher number of output voltage levels have the capability to synthesize waveforms with abetter harmonic spectrum and to limit the motor winding insulation stress. Earlier studies have
  5. 5. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88pointed out the limitations of conventional inverters, especially in high-voltage and high-powerapplications. In recent years, multilevel inverters are becoming increasingly popular for high-powerapplications due to their improved harmonic profile and increased power ratings. Several studieshave been reported in the literature on multilevel inverters topologies, control techniques, andapplications. However, there are few studies that actually discuss or evaluate the performance ofinduction motor drives associated with three-phase multilevel inverter. This project presents then a comparison study for a cascaded H-bridge multilevel directtorque control (DTC) induction motor drive. In this case, symmetrical and asymmetricalarrangements of five- and seven-level H-bridge inverters are compared in order to find anoptimum arrangement with lower switching losses and optimized output voltage quality. For the validation of the earlier discussed control approach, simulations and experimentshave been carried out. The carried out experiments show that an asymmetrical configurationprovides nearly sinusoidal voltages with very low distortion, using less switching devices.Moreover, torque ripples are greatly reduced. Simulation results for five levels cascaded andseven-level H-bridge inverter Shown using MATLAB/Simulink software.
  6. 6. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 A DYNAMIC VOLTAGE RESTORER EQUIPPED WITH A HIGH-FREQUENCY ISOLATED DC–DC CONVERTERABSTRACT : This project presents a dynamic voltage restorer (DVR) that is characterized by the use ofa high-frequency unidirectional isolated dc–dc converter. Voltage sag is the most power qualityproblem facing now days in distribution system; this project discusses the control andperformance of a low-voltage DVR using a high-frequency isolated dc–dc converter. The high-frequency (20-kHz) transformer in the dc–dc converter is much smaller, for example, one-hundredth, in volume than the line-frequency transformer. DVR, which is characterized byconnecting the shunt converter (the diode rectifier) to the supply side. The DVR consists of shunt and series converters connected back to back and a commondc capacitor as an energy-storage device. Multilevel topologies such as diode-clamped orcascaded pulse width modulation (PWM) converters can eliminate line frequency transformersfrom medium-voltage applications, A main motivation of the isolated dc–dc converters is to replace line-frequencytransformers with high-frequency transformers, in which galvanic isolation is indispensablebetween the two sets of dc terminals; Experimental results obtained by a 200-V 5-kW laboratorysystem have verified the viability and effectiveness of the DVR. In the near future, replacing Sidevices with SiC devices will bring significant reductions in volume and weight to the dc–dcconverter, as well as the series converter. Simulation has been done usingMATLAB/SIMULINK software.
  7. 7. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 A HYBRID AC/DC MICRO GRID AND ITS COORDINATION CONTROLABSTRACT : THREE PHASE ac power systems have existed for over 100 years due to their efficienttransformation of ac power at different voltage levels and over long distance as well as theinherent characteristic from fossil energy driven rotating machines. Recently more renewablepower conversion systems are connected in low voltage ac distribution systems as distributedgenerators or ac micro grids due to environmental issues caused by conventional fossil fueledpower plants. Recently dc grids are resurging due to the development and deployment ofrenewable dc power sources and their inherent advantage for dc loads in commercial, industrialand residential applications, the dc micro grid has been proposed to integrate various distributedgenerators. However, ac sources have to be converted into dc before connected to a dc grid anddc/ac inverters are required for conventional ac loads. This project proposes a hybrid ac/dc micro grid to reduce the processes of multiple dc–ac–dc or ac–dc–ac conversions in an individual ac or dc grid. The hybrid grid consists of both acand dc networks connected together by multi-bidirectional converters. AC sources and loads areconnected to the ac network whereas dc sources and loads are tied to the dc network. Energystorage systems can be connected to dc or ac links. The proposed hybrid grid can operate in agrid-tied or autonomous mode. The coordination control algorithms are proposed for smooth
  8. 8. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88power transfer between ac and dc links and for stable system operation under various generationand load conditions. Uncertainty and intermittent characteristics of wind speed, solar irradiationlevel, ambient temperature, and load are also considered in system control and operation. A small hybrid grid has been modeled and simulated using the Simulink in theMATLAB. The simulation results show that the system can maintain stable operation under theproposed coordination control schemes when the grid is switched from one operating conditionto another. A MODIFIED C-DUMP CONVERTER FOR BLDC MACHINE USED IN A FLYWHEEL ENERGY STORAGE SYSTEMABSTRACT : The permanent magnet brushless DC machine (BLDCM) is one of the suitable motors forthe flywheel energy storage system (FESS) The common half-bridge topology for high-speedBLDCM. It includes a buck chopper and a half-bridge converter. Compared with the full-bridgeconverter, the half bridge converter has half the number of switches and avoids the short circuitacross the phase leg in the full-bridge converter. However, this half-bridge topology has two disadvantages for the FESS: 1) the energyunidirectional flow, and 2) the energy of the turnoff phase is consumed on the resistance whichmeans the waste of energy. This project presents a modified C-dump converter for brushless DC (BLDC) machineused in the flywheel energy storage system. The converter can realize the energy bidirectional
  9. 9. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88flowing and has the capability to recover the energy extracted from the turnoff phase of theBLDC machine. The principle of operation, modeling, and control strategy of the system hasbeen investigated in the paper. Simulation and experimental results of the proposed system arealso presented and discussed. A MINIMUM POWER-PROCESSING-STAGE FUEL-CELL ENERGY SYSTEM BASED ON A BOOST-INVERTER WITH A BIDIRECTIONAL BACKUP BATTERY STORAGEABSTRACT : When low-voltage unregulated fuel-cell (FC) output is conditioned to generate ac power,two stages are required: a boost stage and an inversion one. A two-stage FC power conditioningsystem to deliver ac power has been commonly considered and studied. The system usuallyincludes transformer-type dc–dc boost converter stage and dc-to-ac inverter stage with auxiliaryenergy unit. This type of power conditioning system has inevitable drawbacks, such as beingbulky, costly, and inefficient, because each stage has to have a high efficiency for higher overallefficiency and normally more than six active components (switches and diodes) are required. In order to minimize the problems with a two-stage FC power conditioning system, atopology with reduced power processing and conversion stages is required. A topology that is
  10. 10. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88suitable for ac loads and is powered from dc sources able to boost and invert the voltage at thesame time has been proposed. The double-loop control scheme of this topology has also beenproposed for better performance, even during transient conditions. In this paper, the boost-inverter topology that achieves both boosting and inversionfunctions in a single stage is used to develop an FC-based energy system that offers highconversion efficiency, low-cost, and compactness. The proposed system incorporates additionalbattery-based energy storage and a dc–dc bidirectional converter to support instantaneous loadchanges. The output voltage of the boost-inverter is voltage-mode controlled and the dc–dcbidirectional converter is current-mode controlled. The load low-frequency current ripple issupplied by the battery, which minimizes the effects of such ripple being drawn directly from theFC itself. Analysis, simulation, and experimental results are presented to confirm the operationalperformance of the proposed system. A NEW APPROACH TO MULTIFUNCTIONAL DYNAMIC VOLTAGE RESTORER IMPLEMENTATION FOR EMERGENCY CONTROL IN DISTRIBUTION SYSTEMSABSTRACT : The dynamic voltage restorer (DVR) is one of the modern devices used in distributionsystems to protect consumers against sudden changes in voltage amplitude. In this project,emergency control in distribution systems is discussed by using the proposed multifunctionalDVR control strategy. Also, the multi loop controller using the Posicast and P+Resonant
  11. 11. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88controllers is proposed in order to improve the transient response and eliminate the steady-stateerror in DVR response, respectively. The main purpose is to detect and compensate for the voltage sag with minimum DVRactive power injection. Also, the in-phase compensation method can be used for sag and swellmitigation. The multiline DVR can be used for eliminating the battery in the DVR structure andcontrolling more than one line. Moreover, research has been made on using the DVR in mediumlevel voltage. Harmonic mitigation and control of DVR under frequency variations are also inthe area of research. The closed-loop control with load voltage and current feedback isintroduced as a simple method to control the DVR. The proposed algorithm is applied to some disturbances in load voltage caused byinduction motors starting, and a three-phase short circuit fault. Also, the capability of theproposed DVR has been tested to limit the downstream fault current. The current limitation willrestore the point of common coupling (PCC) (the bus to which all feeders under study areconnected) voltage and protect the DVR itself. The innovation here is that the DVR acts as avirtual impedance with the main aim of protecting the PCC voltage during downstream faultwithout any problem in real power injection into the DVR. The basis of the proposed control strategy in this project is that when the fault currentdoes not pass through the DVR, an outer feedback loop of the load voltage with an innerfeedback loop of the filter capacitor current will be used. Also, a feed forward loop will be usedto improve the dynamic response of the load voltage. Moreover, to improve the transientresponse, the Posicast controller and to eliminate the steady-state error. Simulation results showthe capability of the DVR.A NEW METHOD FOR POWER QUALITY IMPROVEMENT INCLASSICAL AC/AC VOLTAGE CONTROLLERS USING PWM TECHNIQUEABSTRACT :
  12. 12. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 There are three basic types of AC to AC converters. The simplest ones, the AC voltagecontrollers, allow controlling the output voltage only, while the output frequency is the same asthe input frequency. The second one is the Cycloconverters. In Cycloconverters, the outputfrequency can be controlled, but it is at least one order of magnitude lower than the inputfrequency. In both the AC voltage controllers and Cycloconverters, the maximum availableoutput voltage approaches the input voltage. The last one is the matrix converter. Because ofhaving no inherent limits on the output frequency, matrix converters are most versatile, but themaximum available output voltage is about 15% lower than the input voltage AC voltagecontrollers are widely used to obtain variable AC voltage from fixed AC source. A lot of topologies of pulse-width modulated (PWM)-AC voltage controllers for single-phase and three phase systems are proposed up to date. PWM-AC controllers have importantadvantages compared with the phase-controlled AC voltage controllers using Thyristors andTriacs. This project presents a novel control technique for application to PWM-AC controllerswith ability of generating smaller harmonics. In the proposed control method, both the traditionalAC voltage controllers and the PWMAC controllers are combined, smaller THD values areobtained and switching losses are minimized. Thus, the harmonic pollution in the power systemwill be reduced and the power quality will be increased. In order to investigate the proposed controller performance, computer simulations areperformed. Obtained results are compared with those of the conventional PWM-AC controllerAccording to the simulation sector-control with PWM method has better performance thanphase-angle control with PWM method does. So, sector-control with PWM method isrecommended to the power community. This method can be of practical value in replacing theconventional counterparts that are used in controlling heating elements and speed control ofsmall fractional horsepower induction motors. Simulation results are conducted usingMATLAB/SIMULINK software.
  13. 13. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 A NEW MULTILEVEL INVERTER TOPOLOGY USING LESS NUMBER OF SWITCHESABSTRACT : Multilevel voltage source inverter is recognized as an important alternative to the normaltwo level voltage source inverter especially in high voltage application. Using multileveltechnique, the amplitude of the voltage is increased, stress in the switching devices is reducedand the overall harmonics profile is improved. Among the familiar topologies, the most popularone is cascaded multilevel inverter. It exhibits several attractive features such as simple circuitlayout, less components counts, modular in structure and avoid unbalance capacitor voltageproblem. However as the number of output level increases, the circuit becomes bulky due to theincrease in the number of power devices, the general purpose of the multilevel inverter is tosynthesize a nearly sinusoidal voltage from several levels of dc voltages, typically obtained fromcapacitor voltage sources. As the number of level increases, the synthesized output waveformhas more steps, which produce a staircase wave that approaches a desired waveform. Also asmore steps added to the waveform, the harmonic distortion of the output waveform decreases,approaching zero as the level increases. As the number of level increases, the voltage that can besumming multiple voltage levels also increases. These new types of converters are suitable for high voltage and high power applicationdue to their ability to synthesize waveforms with better harmonic spectrum. Numeroustopologies have been introduced and widely studied for utility and drive applications. Amongstthese topologies, the multilevel cascaded inverter was introduced in Static VAR compensationand drive systems. This project presents a new technique for getting a multilevel output and alsouses PWM control techniques. In this technique, the number of switches used for the dc to acconversion is reduced. So this dc to ac conversion significantly reduces the initial cost. Thistechnique exhibits some attractive features which suits industrial applications.MATLAB/Simulink environment is used to simulate the results.
  14. 14. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 The simulation of the seven-level multilevel inverter is successfully done using pulsewidth modulation technique. From the simulation, it is noted that the new multilevel invertertopology works well and shows hope to reduce the initial cost and complexity. When we increasethe levels, the number of switches used is very less compared to the other topology. A NOVEL APPROACH IN SOFT STARTING OF LARGE INDUCTION MOTORSABSTRACT : The electric power consumption of AC motor is a great part of the total domestic consumption.So, high efficiency and stability of AC motor can realize energy-saving and cost reducing effectively. Notonly AC motor need to be soft-started to lessen current surge and electric fence voltage-drop, but also itsspeed need to be able to adjusted to improve efficiency. If the induction motor is started directly, itsstarting current will be up to 5-8 times the rated value, which causes a sharp decline in voltage of theconnecting power network, affecting normal operation of other equipments and causing a great impact onthe motor, especially on cage-type rotor whose bars and rings would be destroyed enormously. As the development of the power electronics technology, computer control technology andautomatic control technology, electronic soft-start controller has appeared, while in generally, the starterson the market only have basic modes such as current-limited and voltage step ramping soft-start.Although it can meet the demands of most kinds of loads, the start state is not optimal, direct onlineinduction machine starts have many disadvantages. Torque pulsations are often large and vary frompositive to negative values. These torque transients in a motor shaft are transmitted to the load, resultingin mechanical wear in the motor bearings and load couplings. Therefore, properly controlling the startingcurrents and torques of induction machines is of great importance in many instances. This project proposes a new series compensator based circuit for soft starting of IM. This circuitconsists of a diode-bridge type DC reactor that connects in series with each phase of transformer. It doesnot need any control, measurement and gate driving circuits. The power circuit simplicity, reliableoperation and almost no effect on normal operation of IM are other advantages of proposed circuit. Thetheoretical analysis and the effect on voltage quality are presented. The proposed circuit consists of three
  15. 15. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88similar diode-bridges and a single coil that each connects in series with each-phase of induction motor.This circuit has almost no effect in normal operation of induction motors. The simplicity of proposedcircuit, easy to build and absence of control circuits are the main attractive points of circuit. Theanalytical analysis and designing characteristics for DC reactor in proposed circuit are presented. The overall circuit operation in transient and steady state cases are studied in detail. Simulationresults are obtained to verify the valuable operation of proposed circuit in soft starting. The simulationresults are obtained to verify the performance of proposed method in transient and steady states. A NOVEL BVC-RBF NEURAL NETWORK BASED SYSTEM SIMULATION MODEL FOR SWITCHED RELUCTANCE MOTORABSTRACT : THE switched reluctance motor (SRM) drive is considered as an attractive candidate forvariable speed motor drives due to its low cost and rugged structure, reliable converter topology,and high efficiency over a wide speed range, and fault-tolerant performance. These drives aresuitable for applications such as electric vehicles, aircraft starter/generator systems, miningdrives, robotics, and. On the one hand, several approaches have been reported in the literature forobtaining and describing the flux linkage characteristics of SRM, FEA is the most commonlyused method for calculating the flux linkage characteristics without experimental measurement,which is quite suitable for machine design and performance prediction. Nevertheless, almost all of the aforementioned intelligent approximation methods such asANN, ANFIS, and RBF are conditioned on that the model is determined based on theobservational data only. But in the modeling task, there is more or less some prior knowledgeavailable, which can help to improve the model generalization. A new topology of RBF neural
  16. 16. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88network with boundary value constraints that has the capability of automatically satisfying typesof prior knowledge is proposed, without adding algorithmic complexity and computational costs.The so-called BVC-RBF neural network is applied to modeling of the flux linkage characteristicin this project. The purpose of this project is to develop a SRM system simulation model considering thecritical problems as discussed above. In this projetc, a double scalar magnetic potential method(DSMP) based 3-D FEM together with enhanced incremental energy method (EIEM) is used forflux linkage calculation, which considers the end effect and reduces the computation time. Inorder to get better approximation results, a novel BVC-RBF neural network is applied formodeling of the flux linkage characteristics. Based on the modeling results, a SRM systemsimulation model is studied here using MATLAB/Simulink. All simulations are completelydocumented by their blocks, corresponding special MATLAB functions, and parameters. A SEVEN-LEVEL INVERTER TOPOLOGY FOR INDUCTION MOTOR DRIVE USING TWO-LEVEL INVERTERS AND FLOATING CAPACITOR FED H-BRIDGESABSTRACT : THE capability of multilevel inverters to generate voltage waveform with less harmonic distortion, atreduced switching frequency, using switching devices of low-voltage ratings makes them preferred choice formedium- and high voltage power processing applications. This has led to their increasing applications in the controlof medium and high voltage ac drives .Though with increase in number of levels the quality of waveform improves,it also increases the complexity of the circuit due to the increase in the number of devices and associated controlcircuitry. The other issues of concern in industrial applications are reliability and efficiency of the system. Hence,the researchers in this field are focused mainly on the development of less complex, more reliable and efficientmultilevel inverter topologies. A survey of multilevel inverter topologies is presented. The conventional multilevelconverters include the neutral point clamped (NPC), flying capacitor, and cascaded H-bridge topologies. Dualinverter configuration for an open-end winding induction motor is another interesting multilevel topology for driveapplications.
  17. 17. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 The seven-level inverter topology proposed in this is intended for an induction motor with open-endwinding structure. Here, in addition to two two-level inverters feeding the coils from both ends, two H-bridge cellsare connected in series with the motor winding in each phase. These H-bridge cells are fed by capacitors whosevoltages are maintained at the required level. An important advantage of this topology is the reduction in dc-linkvoltage requirement by half when compared with the requirement of dc-link voltage in NPC topology. In thistopology, there are multiple ways of generating middle voltage levels and this feature is utilized in balancing thecapacitor voltages in the entire modulation range. It needs only two isolated dc-voltage sources of voltage rating Vdc/2 where Vdc is the dc voltage magnitude required by the conventional neutral point clamped (NPC) seven-leveltopology. The proposed topology is capable of maintaining the H-bridge capacitor voltages at the required level ofVdc /6 under all operating conditions, covering the entire linear modulation and over modulation regions, by makinguse of the switching state redundancies. In the event of any switch failure in H-bridges, this inverter can operate in three-level mode, a feature thatenhances the reliability of the drive system. The two level inverters, which operate at a higher voltage level of Vdc/2, switch less compared to the H-bridges, which operate at a lower voltage level of Vdc /6, resulting in switchingloss reduction. The experimental verification of the proposed topology is carried out for the entire modulation range,under steady state as well as transient conditions. Simulation results are studied using MATLAB/SIMULINK software. MODELING AND ANALYSIS OFMULTILEVEL INVERTERS USING UNIPOLAR AND BIPOLAR SWITCHING SCHEMESABSTRACT : For higher power applications, multilevel inverter structures have the particularadvantages of operation at high dc-bus voltages which is achieved using series connection ofswitching devices. Moreover, a reduction in output voltage harmonics is achieved by switching
  18. 18. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88between multiple voltage levels. The two most common multilevel inverter topologies are thediode clamped inverter and the cascaded inverter. In the paper, we will discuss about thecascaded multilevelinverter. The cascaded multilevel inverter uses series strings of single phasefull bridge inverter to construct multilevel phase legs. A particular advantage of this topology isthat the modulation, control and protection requirement of each bridge are modular. Moreover,multilevel inverter topologies are able to generate better output quality, while operating at lowerswitching frequency. This implies lower switching dissipation and higher efficiency. In thispaper, the conventional PWM inverter and the cascaded multilevel PWMinverter is modeled inMATLAB Simulink. The analysis of the conventional PWM inverter and the cascaded multilevelPWMinverter using unipolar and bipolar switching schemes is done and finally the results arecompared. MAXIMUM VOLTAGE ANGLE OPTIMIZATION OF UNINTERRUPTIBLE POWER SUPPLY ON THREE-LEVEL TRANSFORMER-LESS PHOTOVOLTAIC INVERTER
  19. 19. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88ABSTRACT : This paper presents a new topology of three-level transformer-less photovoltaic(PV) inverter. In this topology, a 240V AC system is developed from a full bridge inverter circuitusing PIC microcontroller (PIC16F628A-I/P) connected to an array of PV panel through a powerfactor correction circuit. The output waveform of theinverter depends on the type of pulse driver.The inverter is connected to the utility supply, on the clear day, the ac load is served bythe inverter but on the cloudy day or night where solar irradiance is low, the inverterthrough itsPIC microcontroller automatically changes from the usage of inverter to the utility supply.Objective of this paper is to optimize the maximum voltage angle to obtain the lowest currenttotal harmonic distortion (CTHD) of the uninterruptible power supply (UPS) on the three-levelsingle phase transformer-less inverter. In this paper, the maximum voltage angle optimization ofthe AC three-level waveform transformer-less PV inverteris developed and created by amicrocontroller PIC16F627A-I/P changing maximum voltage angle of the AC three-levelwaveform from 20° to 180°. Resistive load of 30 W lamp and inductive load of 20 W waterpump are applied to the transformer-less PV single phase inverter. The result shows that thelowest CTHD of 15.448% is obtained when the maximum voltage angle is 134°.
  20. 20. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 SINGLE STAGE THREE-LEVEL MPPT INVERTER FOR SOLAR SUPPLIED SYSTEMSABSTRACT : In this study, a single stage, three-phase, three-level neutral point clamped inverter isdesigned for grid connected renewable energy systems. The proposed voltage source inverter isoperated in current controlled mode and a PI current controller is used for the production ofswitching pattern. Also the proposed inverter is operated in parallel with public grid by usingphase locked loop method. Maximum power point tracking process which is aimed to obtainmaximum energy from the supply is performed via the proposed inverter without using anyadditional DC-DC converter. Maximum power point tracking algorithm generates the currentreference for the current controller. Results of experimental studies show that inverter outputcurrent is in phase with line and unity power factor operation is obtained. Also inverter outputcurrent total harmonic distortion is measured as 3.95%. This value is in the limits of internationalstandards (5%).
  21. 21. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 DIGITAL SIMULATION OF RENEWABLE ENERGY SOURCE CONTROLLED EZ-SOURCE INVERTER SYSTEMABSTRACT : Z-Source inverter for buck-boost energy conversion is implemented using only passiveelements with no additional active elements. Therefore Z-Source inverter is less complex. Fromprospects of Z-Source inverter, an Embedded EZ-Source inverter that can produce the same gainas Z-Source inverter is introduced. This paper contributes the digital simulation of renewableenergy source controlled EZ-Source inverter system. Input to the Embedded EZ-Source inverter is obtained from solar cell. The ripple in the output voltage of solar cell is filteredusing Z-filter. Pure DC is given to the three-phase inverter. The inverter converts DC in to three-phase balanced AC. The output of the Embedded EZ-Source inverter is used to control theharmonics present in the load. The system is modeled using matlab simulink. Simulation studiesare done with induction motor load. The simulation results are presented.
  22. 22. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88Z-SOURCE THREE-PHASE FOUR-SWITCH INVERTER WITH DC LINK SPLIT CAPACITOR AND COMPREHENSIVE INVESTIGATION OF Z-SOURCE THREE-PHASE FOUR- SWITCH INVERTERSABSTRACT : Recently z-source network has been used in B4 inverter to create buck-boost four-switchthree-phase inverter. In fact, these topologies combine the advantages of a traditional four-switchthree-phase inverter with the advantages of the Z-impedance network. This paper proposes a newtopology of z-source B4 inverter. New proposed topology, besides advantages of pervious z-source B4 inverters has the self-boost property and can be used as post-fault topology in theswitch redundant fault tolerant Z-source inverter. For the proposed topology, both CBPWM andSVM switching method are proposed and the performance of CBPWM is verified byexperimental results. Furthermore, comprehensive analysis on boost topologies for the
  23. 23. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88B4 inverter including the proposedinverter is done in this paper. Analysis is done on switchingstrategy and boosting capability of different topologies. MODULAR SINGLE-PHASE TRANS-Z-SOURCE INVERTER FOR MULTI-INPUT RENEWABLE ENERGY SYSTEMABSTRACT : This paper presents a novel modular single-phase trans-Z-source inverter for the multi-input grid-connected renewable energy (photovoltaic/wind/fuel cell) system in order to simplifythe system structure and reduce the cost. The proposed modular single-phase trans-Z-source inverter evolves from the original Z-source inverter by incorporating coupled inductorsand center-tapped capacitors and thus making the system neutral available. By utilizing the extra
  24. 24. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88shoot-through state which is prohibited in the conventional voltage-source inverter to avoid shortcircuit, the proposed inverter can perform DC-DC boost conversion and DC-AC inversionsimultaneously based on the single-stage structure. Multiple inverter modules can be flexiblyconfigured in terms of terminal interconnections, and thus they can adapt to multiple energysources at different voltage levels and power capacities. More importantly, a shared DC busdecouples the AC outputs of the interconnected inverter modules from their inputs and enablesthe system to supply balanced power to the grid. Circuit modularization and minimum requireddevices predict a significantly reduced cost; furthermore, the shoot-through operation offers agreat EMI immunity and reliability. LOW-COST SEMI-Z-SOURCE INVERTER FOR SINGLE- PHASE PHOTOVOLTAIC SYSTEMSABSTRACT : This paper presents several nonisolated semi-Z-source inverters for a single-phasephotovoltaic (PV) system with low cost and doubly grounded features. These semi-Z-
  25. 25. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88source inverters employ the Z-source/quasi-Z-source network and only two active switches toachieve the same output voltage as the traditional voltage-fed full-bridge inverter does. The twoactive switches of the semi-Z-source inverter are controlled complementarily. Different from thetraditional single-phase Z-source/quasi-Z-source inverter, shoot-through zero state is notapplicable to the semi-Z-source inverter. The input dc source and the output ac voltage of thesemi-Z-sourceinverter share the same ground, thus leading to less leakage ground currentadvantages over other nondoubly grounded inverters, such as voltage-fed full-bridge inverter.This is a preferred feature for nonisolated grid-connected inverters, especially in PV application.A revised nonlinear sinusoid pulse width modulation method for a semi-Z-source inverter is alsoproposed. By using this method, desired duty cycle can be generated to output the sinusoidalvoltage. Other dc-dc converters with similar voltage gain curve, which can also be used as asingle-phase inverter, are also discussed and summarized. A single-phase semi-Z-source inverter prototype is built; experimental results are provided to verify and demonstrate thespecial features of the proposed circuit.
  26. 26. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 SOLAR INTEGRATED CURRENT-FED QUASI-Z- SOURCE INVERTERWITH POWER BUCK-BOOST CAPABILITYABSTRACT : Solar integrated current-fed quasi-Z-source inverter (qZSI) have been proposed toovercome the limitations of current-source inverter (CSI) and current-fed Z (impedance)sourceinverter (ZSI). The problems with CSI are unidirectional power flow and can perform onlyvoltage boost operation. On the other hand ZSI is bidirectional with an additional diode and havevoltage buck-boost capability. The techniques of ZSI and qZSI are more or less the same butqZSIs are considered to be more efficient and reliable. The drawback of ZSI is that the inductorsmust sustain high currents. Space vector pulse-width modulation is analyzed in this paper; herethe power buck-boost capability is attained by changing the values of input inductance.Simulation results are shown.
  27. 27. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 SWITCHING PATTERN SELECTION SCHEME BASED CASCADED MULTILEVEL INVERTER FED INDUCTION MOTOR DRIVEABSTRACT : This paper focus on switching pattern selection scheme based cascadedmultilevel inverter fed induction motor drive. It offer several advantages compared to theconventional 3-phase bridge inverter in terms of lower dv/dt stresses, lower electromagneticcompatibility, smaller rating and better output features. The proposed method has been designedan eleven-level cascaded multilevel inverter by using sinusoidal pulse width modulationtechnique. The selected pattern has been exposed to give superior performance in load voltage,total harmonics distortion and capacitor voltage fluctuation. The performance of proposedstrategies is confirmed through simulation and hardware investigations.
  28. 28. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 DIODE CLAMPED THREE LEVEL INVERTER USING SINUSOIDAL PWMABSTRACT : An inverter is a circuit which converts dc power into ac power at desired output voltageand frequency. The a.c. output voltage can be fixed at a fixed or variable frequency. Thisconversion can be achieved by controlled turn ON & turn OFF or by forced commutatedthyristors depending on applications. The output voltage waveform of a practical inverter is nonsinusoidal but for high power applications low distorted sinusoidal waveforms are required. Thefiltering of harmonics is not feasible when the output voltage frequency varies over a wide range.There is need for alternatives. Three level Neutral Point Clamped inverter is a step towards it.
  29. 29. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 A NEW METHOD FOR SELECTIVE HARMONIC ELIMINATION IN VOLTAGE SOURCE INVERTER USING IMPERIALIST COMPETITIVE ALGORITHMABSTRACT : This paper presents an efficient and reliable Evolutionary Algorithm based solution forSelective Harmonic Elimination (SHE) switching pattern. This method eliminates considerableamount of lower order line voltage harmonics in Pulse Width Modulation (PWM) inverter.Determination of pulse pattern for the elimination of some lower order harmonics of aPWM inverter necessitates solving a system of nonlinear transcendental equations. ImperialistCompetitive Algorithm is used to solve nonlinear transcendental equations for PWM-SHE.Several methods are available to eliminate the higher order harmonics and it can be easily
  30. 30. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88removed. But the greatest challenge is to eliminate the lower order harmonics and this issuccessfully achieved using Imperialist Competitive Algorithm without using transformer.Simulations using MATLAB are carried out to validate the solution and are compared with theGenetic Algorithm. The results show that the harmonics up to 13th were totally eliminated. A differential-mode current-sourced high-frequency-link photovoltaic inverterABSTRACT : A differential-mode current-fed zero-current-switching (ZCS) based voltage-doublingphotovoltaic (PV) inverter is presented. This inverter has the following features: 1) it can boost a
  31. 31. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88low-voltage (30-60 V) input to a 120-V/60-Hz output; 2) it does not require a 60-Hz transformer;3) it does not require a front-end dc/dc converter; and 4) the topology has inherent voltageboost/gain property thereby reducing the reliance on the transformer turns ratio.The inverterrequires a smaller high-frequency transformer because a) the inverter switches at100-kHz, b) the transformer voltage and current are bipolar in every switching cycle, and c) onlyhalf the input current flows through the transformer at any given instant of time. To maintain theTHD within the acceptable limit, a harmonic compensation control using a proportional-resonant(PR) controller is implemented. Analysis, design, and simulation results of theproposedinverter are presented. Soft-Switching Analysis Of A Resonant Capacitor Current Feedback Self-Oscillating InverterABSTRACT :
  32. 32. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 In this paper, we examine a resonant capacitor current feedback (RCCF) self-oscillatingresonant inverter from nonlinear point of view. By adopting a four-stage equivalent model, wederive the soft-switching dead time from time-domain for the series resonant capacitor linkedparallel load circuit. Importantly, we propose a nonlinear model for the current feedback andgate-drive circuit. Based on analyzing the switching transition interval of this model, thedetermination of feedback parameters is inferred with given input power and resonant elements.Experimental results have been obtained for a RCCF self-oscillating inverteroperating at 3 MHzand 300 V bus voltage.
  33. 33. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 CURRENT CONTROLLED VOLTAGE SOURCE INVERTER USING HYSTERESIS CONTROLLER AND PI CONTROLLERABSTRACT : Current-controlled pulse width modulated (PWM) voltage source inverters are mostwidely used in high performance AC drive systems, as they provide high dynamic response. Acomparative study between the Hysteresis controller and Proportional-Integral controller usingPWM techniques for three-phase voltage source inverter was done. The comparison was done interms of total harmonic distortion (THD) level at the three phase load current. Simulation wasdone with the help of Matlab-Simulink environment. The hysteresis controller providesgooddynamic performance, whereas the Proportional-Integral controller provides instantaneouscurrent control and waveshaping, fixedinverter switching frequency resulting in betterharmonics.
  34. 34. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 INTEGRATED THREE-PHASE TRANSFORMER LESS PV INVERTERABSTRACT : This paper proposes a transformerless PV converter in which both dc-dc boostand inverter stages are implemented by using a single standard three-leg inverter. The proposedsolution furnishes an important level of component count reduction of active devices, whichmeans cost, size and losses reductions in power switches and diodes. Furthermore, the paperpresents: i) relevant characteristics of the system, ii) pulse-width modulation technique; iii)suitable control strategy; iv) voltage and current analysis; and v) simulated and experimentalresults.
  35. 35. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88FAULT ANALYSIS OF INDUCTION MOTOR FED BY A FAULT TOLERANT VOLTAGE SOURCE INVERTERABSTRACT : Induction Motor for many years has been regarded as workhouse in industrialapplications. When the application requires large power and torque specifications, the usage ofinduction motor comes into demand. This results in application of an efficient machine which isstable during various fault conditions. This paper presents the investigations on the fault analysisof a fault tolerantinverter fed three phase induction motor. For this purpose, a fault tolerantoperating strategy based on the connection of the faulty inverter leg to the DC link middle pointwas considered. In this work, simulations studies are done for healthy condition and open legfault condition in the inverterof a fault tolerant VSI-fed induction motor drive.
  36. 36. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 THREE-PHASE TRANSFORMERLESS GRID CONNECTEDQUASI Z-SOURCE INVERTER FOR SOLAR PHOTOVOLTAIC SYSTEMS WITH MINIMAL LEAKAGE CURRENTABSTRACT : We present the design of 3-phase transformerless grid connected Quasi Z-Source Inverter with minimal leakage current, suitable for application in solar photovoltaicsystems. A modified space vector pulse width modulation technique with a reduced number ofcommutations per sector was used to minimize the leakage current without adding extra circuitry(filters and/or leakage current isolation/bypass circuits) in a transformerless Quasi Z-SourceInverter. Theoretical analysis of the proposed system is presented in detail and verifiedusing Matlab Simulink
  37. 37. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 SINGLE Z-SOURCE BASED CASCADED TRANSFORMER MULTILEVEL INVERTERABSTRACT : This paper proposes a new topology of cascaded transformer basedmultilevel inverter using single Z-source. The suggested circuit consists of only one Z network
  38. 38. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88and single DC voltage source, as a result installation area is reduced. In this topology the outputvoltage amplitude is not limited to DC voltage source and transformers turns ratios similar totraditional cascaded transformer based multilevelinverter and can be increased with Z networkshoot-through state control. Besides, it is more reliable against short circuit. In this paper, byusing particular switching algorithm, the modulation index of inverter is kept constant and outputvoltage is controlled by a shoot-through duty ratio, therefore Total Harmonic Distortion (THD)of output voltage is nearly constant for different boost ratio. The performance ofsuggested inverter and switching algorithm are validated with simulation results usingMATLAB/SIMULINK software. THE SIMULATION OF CONTROLLING STRATEGY FOR OUTPUT CURRENT TRACKING OF GRID- CONNECTED INVERTER
  39. 39. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88ABSTRACT : The control strategy of grid-connected inverter has always been a core question ofgenerating systems. This paper analyzed three kinds of ways pf inverters output current based onthe current control mode. Those are current hysteretic comparison control method, timing controlof current instantaneous comparison method and the triangle wave comparison control method oftiming tracking current. And all of three were simulated by MATLAB/Simulink. It turned out tobe that the three methods for grid-connectedinverter have good grid effect. Each of them hastheir advantages and disadvantages in grid control strategy. All of them will provide theoreticalbasis for further research.
  40. 40. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 A NEW MULTILEVEL CONVERTER TOPOLOGY WITH REDUCED NUMBER OF POWER ELECTRONIC COMPONENTSABSTRACT : In this paper, a new topology for cascaded multilevelconverter based onsubmultilevel converter units and full-bridge converters is proposed. The proposed topologysignificantly reduces the number of dc voltage sources, switches, IGBTs, and power diodes asthe number of output voltage levels increases. Also, an algorithm to determine dc voltage sourcesmagnitudes is proposed. To synthesize maximum levels at the output voltage, the proposedtopology is optimized for various objectives, such as the minimization of the number of switches,gate driver circuits and capacitors, and blocking voltage on switches. The analytical analyses ofthe power losses of the proposedconverter are also presented. The operation and performance ofthe proposed multilevel converter have been evaluated with the experimental results of a single-phase 125-level prototype converter.
  41. 41. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 PWM PLUS PHASE ANGLE SHIFT (PPAS) CONTROL SCHEME FOR COMBINED MULTIPORT DC/DC CONVERTERSABSTRACT : Multiport dc/dc converters are widely employed in hybrid energy generation systems toprovide stable power to key loads with high power density. In this paper, the switch duty cycleand the phase angle of the interleaved converters are employed as two control freedoms toachieve decoupled voltage regulation within a certain operating range among different ports,which is referred to as pulsewidth modulation plus phase angle shift (PPAS) control scheme. Aninterleaved bidirectional buck-boost converter and a full-bridge converter are integrated togetherto derive a combined three-port dc/dc converter for photovoltaic (PV)-battery hybrid energysystems, which is adopted as a typical example to explore the clear performance of the proposedPPAS control strategy. The bidirectional buck-boost converterand the full-bridge converter sharethe same power MOSFETs in the primary side, which simplifies the circuit structure andimproves the power density. The duty cycle of the interleaved bidirectional buck-boost converter is adopted to realize the maximum power point tracking and the voltage balancebetween the battery and the PV cell in the primary side. Furthermore, the phase angle of theinterleaved buck-boost converter is employed as another control freedom to achieve accurate
  42. 42. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88secondary output voltage regulation. Finally, a 100-W PV-Battery energy system is designed andtested to verify the effectiveness of the proposed scheme. A LOW-POWER AC–DC SINGLE-STAGE CONVERTER WITH REDUCED DC BUS VOLTAGE VARIATIONABSTRACT : A new low-power single-stage ac-dc converter is proposed in the paper. The outstandingfeature of the converter is that it can operate with a sinusoidal input current and a low primary-side dc bus voltage that is much less variable than that found in other single-stage converters.The operation of the converter is discussed in the paper and its various modes of operation areexplained in detail. An analysis of the converters steady-state characteristics is performed andthe results are used in the design of the converter. Experimental results obtained from aprototype converterare also presented.
  43. 43. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 CONTROL OF IMPROVED FULL-BRIDGE THREE-LEVEL DC/DC CONVERTER FOR WIND TURBINES IN A DC GRIDABSTRACT : This paper presents an improved full-bridge three-level (IFBTL) dc/dc converter for awind turbine in a dc grid by inserting a passive filter into the dc/dc converter to improve theperformance of the converter. The passive filter can effectively reduce the voltage stress of themedium frequency transformer in the IFBTL dc/dc converter. A modulation strategy, includingtwo operation modes, is proposed for the IFBTL dc/dc converter. Then, a voltage balancingcontrol strategy is proposed for the IFBTL dc/dcconverter. Furthermore, the control of the windturbine based on the IFBTL dc/dc converter in a dc-grid system is presented. Finally, a small-
  44. 44. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88scale IFBTL dc/dc converterprototype was built and tested in the laboratory, and the resultsverify the theoretical analysis. POWER LOSSES CALCULATION METHODOLOGY TO EVALUATE INVERTER EFFICIENCY IN ELECTRICAL VEHICLESABSTRACT : Nowadays, electrical vehicles (EVs) are of special interest and fuel engines are starting tobe substituted by electrical motors. Besides the batteries and the motor,the powerelectronic devices are important parts in an EV, especially the inverter. This
  45. 45. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88ac/dc power converter drives the electrical motor. Several tools may be needed to achieve anoptimal design of the inverter. This paper presents a simplified methodology toestimate power losses in a two-level inverter made up with isolated gate bipolar transistors(IGBTs). This methodology is based on the IGBT manufacturer datasheet; therefore, theknowledge of internal parameters used in other more complex methodologies is not required.The model is implemented inMatlab-Simulink and allows simulation of different powerdevices,modulation techniques, and operating conditions very easily. Some results are obtained andvalidated with commercial electronic software and also with the simulation tool Semisel,provided by the manufacturer of the IGBTs. DESIGN AND IMPLEMENTATION OF AN ELECTRIC DRIVE SYSTEM FOR IN-WHEEL MOTOR ELECTRIC VEHICLE APPLICATIONS
  46. 46. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88ABSTRACT : This paper presents the design and application of a hub drive system for Hybrid (HEV)and All Electric Vehicles (EV). Initially Matlab SIMULINK model of a hub driven hybridelectric vehicle is developed and the performance values are calculated. Two 15 kW brushless dcmachines (BLDC) are designed and manufactured to be located inside the rim of the wheels. Theperformance tests of these wheels are conducted in laboratory environment. Then, two separatelydriven rear wheels are mounted to Fiat Linea vehicle. The mechanical differential is replaced byan electronic control technique, which bases upon the detection of the angle of steering wheel. ACAN bus communication is established between the control system of electric driveand ElectronicControl Unit (ECU) of the vehicle. The concerted action between electricallydriven rear-wheels and Internal Combustion Engine (ICE) driven front axle is achieved. Finallysome preliminary road tests are executed and encouraging test results are obtained. The designoptimizations between ICE, Electric Drive and Battery Powerfor various drive cycles areinvestigated.
  47. 47. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 SIMULATION FOR SVPWM INVERTER-SMITH SINGLE- PHASE MOTOR SPEED CONTROLABSTRACT : The transient performance of Smith single phase motor supplied by the single phaseSVPWM voltage source inverter is studied emphatically. And then, voltage space vector of thesingle phase whole-bridge inverter is analyzed and the SVPWM whose control algorithm isdeduced. Meanwhile, a transient mathematical model for the Smith single phase motor isdeveloped. Moreover, a simulation model of variable frequency speed control system of singlephase SVPWM inverter-Smith single phase motor is built byMATLAB/SIMULINK. Finally, bythe simulation calculated to the actual case, the result is consistent with the theoretical analysis.Thus, it would be of a certain practical significance and reference value in the design of SVPWMinverter and speed control system of tri-winding single- phase condenser motor.
  48. 48. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 A NOVEL WIND ENERGY CONVERSION SYSTEM WITH POWERQUALITY IMPROVEMENT FEATURESABSTRACT : This paper focuses on design and simulation of a novel small scale Wind EnergyConversion System (WECS) based on Permanent Magnet Generators (PMGs)and power electronicconverters. Electric power is generated using a PMG whose output is havingvariable magnitude and variable frequency due to non-uniform wind velocity. In the proposedsystem output of PMG is converted to constant DC using a full bridge rectifier and closed loopboost converter. This constant DC output is converted to AC using Three Bridge Four Wire(TBFW) interfacing inverter. One of the most common problems when connecting smallrenewable energy systems to the electric grid concerns the interface unit betweenthepower sources and the grid, as it can inject harmonic components that may deterioratethe power quality. The TBFW inverter can perform as a conventional inverter as well as anactive power filter by means of hysteresis current controller. The inverter can thus be utilized asa powerconverter injecting power generated from renewable energy source to the grid and as ashunt active power filter to compensate for power quality disturbances and loadreactive power demand. Validation of the proposed system is verifiedthrough MATLAB/Simulink simulation.
  49. 49. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 A NEW MATRIX CONVERTER BASED THREE PHASE BRUSHLESS DC MOTOR DRIVEABSTRACT : This paper presents a novel matrix converter based drive technique for three phasebrushless DC (BLDC) machines. Incontrast to existing matrix converter based drives, theproposed technique uses a topology that has less number of semiconductors and a uniqueswitching sequence to drive three phase BLDC machines directly from single phase mainssupply lines without a DC link capacitor. The paper describesin detail both the topology and theunique switching sequence that is essential for the proposed technique. A model basedon Matlab/Simulink is also presented to demonstrate the theoretical performance of the proposeddrive system. The performance of the technique is evaluated using a model of 320 W BLDCmachine, which is operated inboth torque and speed control modes, and simulated resultsindicate that the performance of the machine is comparable to existing techniques. The proposedtechnique is simple to implement, cost effective with low component count, and can be easily
  50. 50. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88adapted to applications such as PM synchronous motor drives or loads, which require a single to3-phasepower conversion. REAL-TIME LOAD COMPENSATION BY USING A CASCADED MULTILEVEL INVERTER-BASED STATCOMABSTRACT :A delta-connected static synchronous compensator (STATCOM) is proposed for real-time loadcompensation of unbalanced load. The structure of the STATCOM is a multilevel cascaded fullH-bridge inverter which is suitable for high-voltage, high-power applications. First, use of thesymmetrical components method derives the control algorithm of the STATCOM. TheSTATCOM is then built in theMatlab/Simulink environment. Finally, simulation results indicatethat the proposed delta-connected STATCOM is effective for real-time load compensation ofunbalanced loads.
  51. 51. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 MODELING AND CONTROL OF DIRECTLY CONNECTED AND INVERTER INTERFACED SOURCES IN A MICROGRIDABSTRACT : There has been a keen interest on Distributed Generation (DG) due to their restrictedgoals of meeting local loads and improving reliability of the overall system. Microgrids (MGs)
  52. 52. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88are connected to the main grid through a Point of Common Coupling which separates the formerfrom the latter. At the time of an intentional islanding or fault at the grid level, a microgrid isable to disconnect itself from the rest of the grid and operate by itself. A microgrid may containboth directly connected and inverter interfaced sources with different control configurations.When disconnected or islanded from the main grid there are various approaches to share theload, one of them being master-slave control where a storage device may become the referenceDG to set the nominal voltage and frequency. When the main grid is brought back to normaloperation, the microgrid is able to resynchronize itself to the main grid only when it meetscertain conditions so as to avoid transients. All the micro sources, power electronics and theircontrol with power management were developed in Matlab/Simulink. MODELING AND ANALYSIS OF AN ELECTRONIC LOAD SENSING PUMPABSTRACT :
  53. 53. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 This paper describes the modeling and analysis of the dynamics of an electronic loadsensing hydraulic system consisting of a load sensing pump, a flow control valve, a hydrauliccylinder and an effective mass representing the linkage inertia. Load sensing hydraulic circuitsare prone to instabilities and frequently require hydraulic filters in the form of orifices andcontrol volumes to remove unwanted oscillations. Closed loop controllers for such systems aredifficult to design due to the nonlinearities and high order transfer functions. In this paper alinear model is derived from equations of motion, and validated against a nonlinear simulationmodel based on MATLAB. Then, a third order model is derived that can be used for controllerdesign.
  54. 54. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 A NOVEL TEMPERATURE ESTIMATION METHOD FOR SOLAR CELLSABSTRACT : In this paper, an effective approach for estimating the operating temperature of aphotovoltaic (PV) module is presented. The developed method is simple and does not need anyadditional hardware. The proposed approach uses an analytical formula to derive the temperaturefrom the maximum power point (MPP) voltage and current. The effectiveness of the new methodis investigated through some conducted simulations in MATLAB/Simulink environment and itsvalidity is verified by experiment on REC-AE220 solar modules.
  55. 55. IEEE 2012 MATLAB Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 A NEW BOOST TYPE CASCADED INVERTER WITH SINGLE DC SOURCEABSTRACT : Cascaded multilevel inverters with Y connection or Delta-connection have been proposedfor high voltage applications. However, these topologies always require isolated transformers foreach inverter cell, which makes cost high and wiring complex. Furthermore, system weight andvolume also increase accordingly. This paper presents two new types of boost type delta-connection cascaded inverters with only a single DC source. Based on it, a suitable voltagecontrol with PWM modulation is also proposed to improve the inverter control performance andDC capacitors voltage fluctuation. Verification has been carried out by simulationwith MATLAB.

×