This document analyzes induction motor speed control using a variable frequency drive (VFD) system operated by a programmable logic controller (PLC) and supervisory control and data acquisition (SCADA) system. It describes how a VFD can be used to efficiently control the speed of a three-phase induction motor and provide energy savings compared to direct connection to the main supply. A PLC is used to control the VFD based on inputs from proximity sensors on a conveyor belt. A SCADA system allows for remote monitoring and control of the motor speed through the PLC and VFD from a computer interface. The system provides flexible and efficient control of induction motor speed for applications requiring variable speed operation like conveyor belts
The batteries used in electric and hybrid vehicles
consists of several cells with voltages between 3.6V battery and
4.2 V in series or parallel combinations of configurations for
obtaining the necessary available voltages in the operation of a
hybrid electric vehicle. How malfunction of a single cell affects
the behavior of the entire battery pack, BMS main function is to
protect individual cells against over-discharge, overload or
overheating. This is done by correct balancing of the cells. In
addition BMS estimates the battery charge status
AC Induction motor (IM) are used as actuators in many industrial processes. Although IMs are reliable, they are subjected to some undesirable stresses, causing faults resulting in failure. Monitoring of an IM is a fast emerging technology for the detection of initial faults. It avoids unexpected failure of an industrial process. Monitoring techniques can be classified as the conventional and the digital techniques.
1.1 PROTECTION SCHEME OF INDUCTION MOTOR
Classical monitoring techniques for three-phase IMs are generally provided by some combination of mechanical and electrical monitoring equipment. Mechanical forms of motor sensing are also limited in ability to detect electrical faults, such as stator insulation failures. In addition, the mechanical parts of the equipment can cause problems in the course of operation and can reduce the life and efficiency of a system.
It is well known that IM monitoring has been studied by many researchers and reviewed in a number of works. Reviews about various stator faults and their causes, and detection techniques, latest trends, and diagnosis methods supported by the artificial intelligence, the microprocessor, the computer and other techniques in monitoring unbalanced voltage inter turn faults, stator winding temperature and microcontroller based digital protectors have been recently studied subjects. In these, while one or two variables were considered together to protect the IMs, the variables of the motor were not considered altogether. Measurements of the voltages, currents, temperatures, and speed were achieved and transferred to the computer for final protection decision.
A programmable integrated circuit (PIC) based protection system has been introduced using Microprocessors and the solutions of various faults of the phase currents, the phase voltages, the speed, and the winding temperatures of an IM occurring in operation have been achieved with the help of the microcontroller, but these electrical parameters have not been displayed on a screen.
Nowadays, the most widely used area of programmable logic controller (PLC) is the control circuits of industrial automation systems. The PLC systems are equipped with special I/O units appropriate for direct usage in industrial automation systems. The input components, such as the pressure, the level, and the temperature sensors, can be directly connected to the input. The driver components of the control circuit such as contactors and solenoid valves can directly be connected to the output.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
BLDC Motor Performance & Endurance Test Set up, consist Various types of Dynamometers & Control configurations as Manual Torque Control, PLC Controlled, PC Based Data Acquisition.
BLDC Motors, as they are compact in size, lighter in weight & Most Efficient than other Electric Motors, They are used as Hub Motor Electric Vehicles –Scooters, Electric Bicycle, BLDC Shafted Motors for Solar Power Submersible Pumps, Sump Pumps, for various applications in Automotive, Aerospace, Military, Medical, Lifts, Cranes, Elevators,
Air Condition & Refrigerator Compressors, Fans, Cleaners-Scrubbers, Sweepers, Lawn movers, Trade mills & fitness equipments & many more applications.
Dynamometers employed to test motors are:
Powder Dynamometers, Eddy Current dynamometers, Tandem Dynamometers, AC Regenerative dynamometers,
DC regenerative dynamometers.
Our Proprietary APPSYS MOTOR TEST software developed, using National Instruments LabView Platform, for BLDC Motor test, to monitor & display Motor Electrical Input Power, Mechanical Output Power,Motor Efficiency, Input Voltage, Current, Power Factor, Motor No Load Current, Full Load Current,No Load & Full Load Speed, No Load & Full Load Torque,Motor temperature, Bearing temperature, Winding temperature, etc.
PC based Motor test set up consist: Window XP /Win7 operating systems, PC hardware & PCI Data Card with necessary Digital & Analogueinputs & outputs, Power analyzer, Electrical Input Power (Motor Power Sensor to sense Motor Power -To monitor Motorelectrical Input Power & for Calculation of efficiency) & Mechanical Output Power –Speed &Torque, Efficiency are displayed on Monitor & stored in tabular form &graphs in MS Excel format.
PC Auto & PC Manual mode selector Soft push button switch on Monitorscreen. In PC Auto mode, Data is captured on predetermined (Site settable) time & Torque Loading in 100 steps (independently settable), whereas in PCManual mode –Data is captured manually by pressing data capture soft buttonon screen. Captured data is exported to MS Excel in Table forms & inGraphs form to showTorque-Speed characteristics, Torque-Current and Speed-Current, Efficiency characteristics,Torque-Speed Oscillations at steady stateTorque at different temperatures, Temp measurements etc.& custom characteristics required by clients.
Accessories such as Motor Temperature, Winding Temperature measurements, Motors mounting Test bed, Test Stands with T slot having X, Y & Z adjustment for Length, Width & Height adjustments is also offered along with dynamometer
Speed Control of Induction Motor Using PLC and SCADA SystemIJERA Editor
Automation or automatic control is the use of various control systems for operating equipment such as
machinery, processes in factories, boilers and heat-treating ovens, switching in telephone networks, steering and
stabilization of ships, aircraft and other applications with minimal or reduced human intervention. Some
processes have been completely automated. The motor speed is controlled via the driver as an open loop control.
To make a more precise closed loop control of motor speed we will use a tachometer to measure the speed and
feed it back to the PLC, which compares to the desired value and take a control action, then the signal is
transferred to the motor – via driver – to increase / decrease the speed. We will measure the speed of the motor
using an incremental rotary encoder by adjusting parameters (PLC, driver) and also we need to reduce the
overall cost of the system. Our control system will be held using the available Siemens PLC. In addition, we will
monitor motor parameters via SCADA system.
The batteries used in electric and hybrid vehicles
consists of several cells with voltages between 3.6V battery and
4.2 V in series or parallel combinations of configurations for
obtaining the necessary available voltages in the operation of a
hybrid electric vehicle. How malfunction of a single cell affects
the behavior of the entire battery pack, BMS main function is to
protect individual cells against over-discharge, overload or
overheating. This is done by correct balancing of the cells. In
addition BMS estimates the battery charge status
AC Induction motor (IM) are used as actuators in many industrial processes. Although IMs are reliable, they are subjected to some undesirable stresses, causing faults resulting in failure. Monitoring of an IM is a fast emerging technology for the detection of initial faults. It avoids unexpected failure of an industrial process. Monitoring techniques can be classified as the conventional and the digital techniques.
1.1 PROTECTION SCHEME OF INDUCTION MOTOR
Classical monitoring techniques for three-phase IMs are generally provided by some combination of mechanical and electrical monitoring equipment. Mechanical forms of motor sensing are also limited in ability to detect electrical faults, such as stator insulation failures. In addition, the mechanical parts of the equipment can cause problems in the course of operation and can reduce the life and efficiency of a system.
It is well known that IM monitoring has been studied by many researchers and reviewed in a number of works. Reviews about various stator faults and their causes, and detection techniques, latest trends, and diagnosis methods supported by the artificial intelligence, the microprocessor, the computer and other techniques in monitoring unbalanced voltage inter turn faults, stator winding temperature and microcontroller based digital protectors have been recently studied subjects. In these, while one or two variables were considered together to protect the IMs, the variables of the motor were not considered altogether. Measurements of the voltages, currents, temperatures, and speed were achieved and transferred to the computer for final protection decision.
A programmable integrated circuit (PIC) based protection system has been introduced using Microprocessors and the solutions of various faults of the phase currents, the phase voltages, the speed, and the winding temperatures of an IM occurring in operation have been achieved with the help of the microcontroller, but these electrical parameters have not been displayed on a screen.
Nowadays, the most widely used area of programmable logic controller (PLC) is the control circuits of industrial automation systems. The PLC systems are equipped with special I/O units appropriate for direct usage in industrial automation systems. The input components, such as the pressure, the level, and the temperature sensors, can be directly connected to the input. The driver components of the control circuit such as contactors and solenoid valves can directly be connected to the output.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
BLDC Motor Performance & Endurance Test Set up, consist Various types of Dynamometers & Control configurations as Manual Torque Control, PLC Controlled, PC Based Data Acquisition.
BLDC Motors, as they are compact in size, lighter in weight & Most Efficient than other Electric Motors, They are used as Hub Motor Electric Vehicles –Scooters, Electric Bicycle, BLDC Shafted Motors for Solar Power Submersible Pumps, Sump Pumps, for various applications in Automotive, Aerospace, Military, Medical, Lifts, Cranes, Elevators,
Air Condition & Refrigerator Compressors, Fans, Cleaners-Scrubbers, Sweepers, Lawn movers, Trade mills & fitness equipments & many more applications.
Dynamometers employed to test motors are:
Powder Dynamometers, Eddy Current dynamometers, Tandem Dynamometers, AC Regenerative dynamometers,
DC regenerative dynamometers.
Our Proprietary APPSYS MOTOR TEST software developed, using National Instruments LabView Platform, for BLDC Motor test, to monitor & display Motor Electrical Input Power, Mechanical Output Power,Motor Efficiency, Input Voltage, Current, Power Factor, Motor No Load Current, Full Load Current,No Load & Full Load Speed, No Load & Full Load Torque,Motor temperature, Bearing temperature, Winding temperature, etc.
PC based Motor test set up consist: Window XP /Win7 operating systems, PC hardware & PCI Data Card with necessary Digital & Analogueinputs & outputs, Power analyzer, Electrical Input Power (Motor Power Sensor to sense Motor Power -To monitor Motorelectrical Input Power & for Calculation of efficiency) & Mechanical Output Power –Speed &Torque, Efficiency are displayed on Monitor & stored in tabular form &graphs in MS Excel format.
PC Auto & PC Manual mode selector Soft push button switch on Monitorscreen. In PC Auto mode, Data is captured on predetermined (Site settable) time & Torque Loading in 100 steps (independently settable), whereas in PCManual mode –Data is captured manually by pressing data capture soft buttonon screen. Captured data is exported to MS Excel in Table forms & inGraphs form to showTorque-Speed characteristics, Torque-Current and Speed-Current, Efficiency characteristics,Torque-Speed Oscillations at steady stateTorque at different temperatures, Temp measurements etc.& custom characteristics required by clients.
Accessories such as Motor Temperature, Winding Temperature measurements, Motors mounting Test bed, Test Stands with T slot having X, Y & Z adjustment for Length, Width & Height adjustments is also offered along with dynamometer
Speed Control of Induction Motor Using PLC and SCADA SystemIJERA Editor
Automation or automatic control is the use of various control systems for operating equipment such as
machinery, processes in factories, boilers and heat-treating ovens, switching in telephone networks, steering and
stabilization of ships, aircraft and other applications with minimal or reduced human intervention. Some
processes have been completely automated. The motor speed is controlled via the driver as an open loop control.
To make a more precise closed loop control of motor speed we will use a tachometer to measure the speed and
feed it back to the PLC, which compares to the desired value and take a control action, then the signal is
transferred to the motor – via driver – to increase / decrease the speed. We will measure the speed of the motor
using an incremental rotary encoder by adjusting parameters (PLC, driver) and also we need to reduce the
overall cost of the system. Our control system will be held using the available Siemens PLC. In addition, we will
monitor motor parameters via SCADA system.
Development of an automatic subsea blowout preventer stack control system usi...ISA Interchange
An extremely reliable remote control system for subsea blowout preventer stack is developed based on the off-the-shelf triple modular redundancy system. To meet a high reliability requirement, various redundancy techniques such as controller redundancy, bus redundancy and network redundancy are used to design the system hardware architecture. The control logic, human–machine interface graphical design and redundant databases are developed by using the off-the-shelf software. A series of experiments were performed in laboratory to test the subsea blowout preventer stack control system. The results showed that the tested subsea blowout preventer functions could be executed successfully. For the faults of programmable logic controllers, discrete input groups and analog input groups, the control system could give correct alarms in the human–machine interface.
Analysis and control of four quadrant operation of three phase brushless dc (...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
BIDIRECTIONAL SPEED CONTROL OF DC MOTOR USING 8051 MICROCONTROLLERShanmukha S. Potti
1. This project deals with bidirectional speed control of DC motor using 8051 micro-controller.
2. Design of H bridge dc-dc converter is an IGBT based bridge circuit.
3. The control circuit consists of the 8051 microcontroller which is programmed to generate pulses to turn on IGBTs per required sequence.
4. The H bridge dc-dc converter is implemented with hardware setup and software program in the 8051 –C code.
Stepper Motor Drive For Position Control in Robotic Applicationsijiert bestjournal
This project is about making an embedded system in order to control different functionalities of a stepper motor. The main functi ons of this stepper motor are to control the speed and direction. This system will actually adapt the requirements o f the modern technology. With the help of this system one can control the speed of th e stepper motor controller for pick and place robot which is used in material hand ling in various industries.
SPEED SYNCHRONIZATION OF MASTER –SLAVE D.C. MOTORS USING MICROCONTROLLER, FOR...Editor IJMTER
In textile industry many processes require speed synchronization of more than one motors involved in the process. Rolling of cloth should be synchronized with the speed of weaving spindle to avoid damage and motor speed synchronization is vital in conveyor belt driven by multiple motors. Abrupt load variations may cause hunting or oscillatory behavior in d. c. machines. This behavior can be detrimental to the process. The digitally controlled d. c. machines can have much aggravated phenomenon owing to poor sampling period selection. Traditionally processes are synchronized through mechanical transmission system consisting of a line shaft gears, pullers etc. Among the available software mechanisms master-slave synchronization is a widely used technique. Multi-motor applications have become very attractive field in industrial applications replacing in traditional mechanical coupling. Many textile applications involved synchronized speed motors. For example wrapping of clothes should be synchronized with the speed of weaving spindle to avoid damage and Similarly in some cases the speed of long conveyor belt driven by multiple motors is need to be constant. In such types of applications master slave technique is used as a software mechanism to synchronize the speed of different motors to avoid damage.
The main objective of this project is controlling speed of BLDC motors with the help of microcontroller. To make the industry automation the equipment and machineries should be controlled automatically. So control of the machineries which involving this motor can be done accurately. It displays its speed using an IR method of speed sensor mechanism.
An opto isolator based linearization technique of a typical thyristor driven ...ISA Interchange
A thyristor driven pump is operated by varying the DC input signal in the firing circuit of thyristor drive. This operation suffers from difficulties due to the nonlinear relation between thyristor output and DC input. In the present paper, an opto-isolator based linearization technique of a typical thyristor driven pump has been proposed. The design, fabrication and the necessary circuit diagram along with theoretical explanations of the resultant output has been described. The operation of the linearized thyristor driven pump has been studied experimentally and the experimental data before and after linearization are reported. The characteristic graphs are found to have very good linearity.
Mini ee 5 motor speed controlling interfaces with microcontroller Electrical ...1000kv technologies
100kv,1000kv,1000kv technologies,1000kv projects,technologies,live projects,Hyderabad live projects,live projects in, diploma low cost projects,1000kv projects, , academic projects,btech live projects,Hyderabad,1000kilovolts,1000kilovolts technologies ,btech main projects ,
pure mechanical projects,btech mechanical projects, ,engineering mechanical projects,mechanical kit projects diploma mechanical projects, live projects mechanical,new mechanical projects,
electronics projects, electronics projects for engineering final year students, electronics and communication engineering projects for final year students, Mini projects, electrical engineering mini projects abstracts
Development of an automatic subsea blowout preventer stack control system usi...ISA Interchange
An extremely reliable remote control system for subsea blowout preventer stack is developed based on the off-the-shelf triple modular redundancy system. To meet a high reliability requirement, various redundancy techniques such as controller redundancy, bus redundancy and network redundancy are used to design the system hardware architecture. The control logic, human–machine interface graphical design and redundant databases are developed by using the off-the-shelf software. A series of experiments were performed in laboratory to test the subsea blowout preventer stack control system. The results showed that the tested subsea blowout preventer functions could be executed successfully. For the faults of programmable logic controllers, discrete input groups and analog input groups, the control system could give correct alarms in the human–machine interface.
Analysis and control of four quadrant operation of three phase brushless dc (...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
BIDIRECTIONAL SPEED CONTROL OF DC MOTOR USING 8051 MICROCONTROLLERShanmukha S. Potti
1. This project deals with bidirectional speed control of DC motor using 8051 micro-controller.
2. Design of H bridge dc-dc converter is an IGBT based bridge circuit.
3. The control circuit consists of the 8051 microcontroller which is programmed to generate pulses to turn on IGBTs per required sequence.
4. The H bridge dc-dc converter is implemented with hardware setup and software program in the 8051 –C code.
Stepper Motor Drive For Position Control in Robotic Applicationsijiert bestjournal
This project is about making an embedded system in order to control different functionalities of a stepper motor. The main functi ons of this stepper motor are to control the speed and direction. This system will actually adapt the requirements o f the modern technology. With the help of this system one can control the speed of th e stepper motor controller for pick and place robot which is used in material hand ling in various industries.
SPEED SYNCHRONIZATION OF MASTER –SLAVE D.C. MOTORS USING MICROCONTROLLER, FOR...Editor IJMTER
In textile industry many processes require speed synchronization of more than one motors involved in the process. Rolling of cloth should be synchronized with the speed of weaving spindle to avoid damage and motor speed synchronization is vital in conveyor belt driven by multiple motors. Abrupt load variations may cause hunting or oscillatory behavior in d. c. machines. This behavior can be detrimental to the process. The digitally controlled d. c. machines can have much aggravated phenomenon owing to poor sampling period selection. Traditionally processes are synchronized through mechanical transmission system consisting of a line shaft gears, pullers etc. Among the available software mechanisms master-slave synchronization is a widely used technique. Multi-motor applications have become very attractive field in industrial applications replacing in traditional mechanical coupling. Many textile applications involved synchronized speed motors. For example wrapping of clothes should be synchronized with the speed of weaving spindle to avoid damage and Similarly in some cases the speed of long conveyor belt driven by multiple motors is need to be constant. In such types of applications master slave technique is used as a software mechanism to synchronize the speed of different motors to avoid damage.
The main objective of this project is controlling speed of BLDC motors with the help of microcontroller. To make the industry automation the equipment and machineries should be controlled automatically. So control of the machineries which involving this motor can be done accurately. It displays its speed using an IR method of speed sensor mechanism.
An opto isolator based linearization technique of a typical thyristor driven ...ISA Interchange
A thyristor driven pump is operated by varying the DC input signal in the firing circuit of thyristor drive. This operation suffers from difficulties due to the nonlinear relation between thyristor output and DC input. In the present paper, an opto-isolator based linearization technique of a typical thyristor driven pump has been proposed. The design, fabrication and the necessary circuit diagram along with theoretical explanations of the resultant output has been described. The operation of the linearized thyristor driven pump has been studied experimentally and the experimental data before and after linearization are reported. The characteristic graphs are found to have very good linearity.
Mini ee 5 motor speed controlling interfaces with microcontroller Electrical ...1000kv technologies
100kv,1000kv,1000kv technologies,1000kv projects,technologies,live projects,Hyderabad live projects,live projects in, diploma low cost projects,1000kv projects, , academic projects,btech live projects,Hyderabad,1000kilovolts,1000kilovolts technologies ,btech main projects ,
pure mechanical projects,btech mechanical projects, ,engineering mechanical projects,mechanical kit projects diploma mechanical projects, live projects mechanical,new mechanical projects,
electronics projects, electronics projects for engineering final year students, electronics and communication engineering projects for final year students, Mini projects, electrical engineering mini projects abstracts
Speed Control of Three Phase Induction Motor Using PLC under Open and Closed ...IJERA Editor
In today’s world industries demand process automation in all sectors, because automation results in better quality, increased production and reduced costs. The variable speed drives which can control the speed of AC/DC motors are indispensable controlling elements in automation systems. Depending on the application some of them are fixed speed and some of them are variable speed drives. The objective of the work is to monitor and control the speed of an Induction motor under various operating conditions such as no load and on load driven by AC Drive using programmable logic controller.
Speed Control of Brushless Dc Motor Using Fuzzy Logic Controlleriosrjce
This paper presents a control scheme of a fuzzy logic for the brushless direct current (BLDC)
permanent magnet motor drives. The mathematical model of BLDC motor and fuzzy logic algorithm is derived.
The controller is designed to tracks variations of speed references and stabilizes the output speed during load
variations. The BLDC has some advantages compare to the others type of motors, however the nonlinearity of
the BLDC motor drive characteristics, because it is difficult to handle by using conventional proportionalintegral
(PI) controller. The BLDC motor is fed from the inverter where the rotor position and current
controller is the input. In order to overcome this main problem, the fuzzy logic control is learned continuously
and gradually becomes the main effective control. The effectiveness of the proposed method is verified by
develop simulation model in MATLAB-Simulink program. The simulation results show that the proposed fuzzy
logic controller (FLC) produce significant improvement control performance compare to the PI controller for
both condition controlling speed reference variations and load disturbance variations. Fuzzy logic is introduced
in order to suppressing the chattering and enhancing the robustness of the controlled system. Fuzzy boundary
layer is developed to provide smother transition to the equivalent control. Smaller overshoot in the speed
response and much better disturbance rejecting capabilities.
Simulation DC Motor Speed Control System by using PID Controllerijtsrd
Speed control system is the most common control algorithm used in industry and has been universally accepted in industrial control. One of the applications used here is to control the speed of the DC motor. Controlling the speed of a DC motor is very important as any small change can lead to instability of the closed loop system. The aim of this thesis is to show how DC motor can be controlled by using PID controller in MATLAB. The development of the PID controller with the mathematical model of DC motor is done using automatic tuning method. The PID parameter is to be test with an actual motor also with the PID controller in MATLAB Simulink. In this paper describe the results to demonstrate the effectiveness and the proposed of this PID controller produce significant improvement control performance and advantages of the control system DC motor. Mrs Khin Ei Ei Khine | Mrs Win Mote Mote Htwe | Mrs Yin Yin Mon ""Simulation DC Motor Speed Control System by using PID Controller"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd25114.pdf
Paper URL: https://www.ijtsrd.com/engineering/electrical-engineering/25114/simulation-dc-motor-speed-control-system-by-using-pid-controller/mrs-khin-ei-ei-khine
It is known that controlling the speed of a three phase Induction Motor (IM) under different operating conditions is an important task and this can be accomplished through the process of controlling the applied voltage on its stator circuit. Conventional Proportional- Integral- Differeantional (PID) controller takes long time in selecting the error signal gain values. In this paper a hybrid Fuzzy Logic Controller (FLC) with Genetic Algorithm (GA) is proposed to reduce the selected time for the optimized error signal gain values and as a result inhances the controller and system performance. The proposed controller FL with GA is designed, modeled and simulated using MATLAB/ software under different load torque motor operating condition. The simulation result shows that the closed loop system performance efficiency under the controller has a maximum value of 95.92%. In terms of efficiency and at reference speed signal of 146.53 rad/sec, this system performance shows an inhancement of 0.67%,0.49% and 0.05% with respect to the closed loop system efficiency performance of the PID, FL, and PID with GA controllers respectively. Also the simulation result of the well designed and efficient GA in speeding up the process of selecting the gain values, makes the system to have an efficiency improvement of 14.42% with respect to the open loop system performance.
Speed Control of DC Motor under Varying Load Using PID ControllerCSCJournals
DC motors are used extensively in industrial variable speed applications because of most demanding speed-torque characteristics and are simple in controlling aspects. This paper presents a DC motor speed controlling technique under varying load condition. The linear system model of separately excited DC motor with Torque-variation is designed using PID controller. A Matlab simulation of proposed system with no-Load and full-load condition is performed on Simulink platform to observe the system response. The motor speed is kept constant in this experiment. The simulation result of the experiment shows that a motor is running approximately at a constant speed regardless of a motor load. The Simulink results show that the speed of the motor is slow down only for about 270 rpm (9%) in 980 milliseconds under the effect of full load. However, the motor speed is hunting about 200 rpm (6.66%) in 900 milliseconds on unloading condition. It is concluded that a PID controller is successful tool for controlling the motor speed in presence of load disturbances.
FOUR QUADRANT SPEED CONTROL OF DC MOTOR USING AT89S52 MICROCONTROLLERJournal For Research
Speed control of a machine is the most vital and important part in any industrial organization. This paper is designed to develop a four quadrant speed control system for a DC motor using microcontroller. The motor is operated in four quadrants i.e. clockwise, counter clock-wise, forward brake and reverse brake. It also has a feature of speed control. The four quadrant operation of the dc motor is best suited for industries where motors are used and as per requirement they can rotate in clockwise, counter-clockwise and also apply brakes immediately in both the directions. In case of a specific operation in industrial environment, the motor needs to be stopped immediately. In such scenario, this proposed system is very apt as forward brake and reverse brake are its integral features. Instantaneous brake in both the directions happens as a result of applying a reverse voltage across the running motor for a brief period and the speed control of the motor can be achieved with the PWM pulses generated by the microcontroller. The microcontroller used in this project is from 8051 family. Push buttons are provided for the operation of the motor which are interfaced to the microcontroller that provides an input signal to it and controls the speed of the motor through a motor driver IC. The speed and direction of DC motor has been observed on digital CRO. Microcontroller programming has been written in assembly language by using notepad and it has been converted in hex file by using micro vision Kiel. The burning of programming in the 8051 microcontroller chip has been done by using positron boot loader software.
Speed Control of Induction Motor Using PLC and SCADA SystemIJERA Editor
Automation or automatic control is the use of various control systems for operating equipment such as
machinery, processes in factories, boilers and heat-treating ovens, switching in telephone networks, steering and
stabilization of ships, aircraft and other applications with minimal or reduced human intervention. Some
processes have been completely automated. The motor speed is controlled via the driver as an open loop control.
To make a more precise closed loop control of motor speed we will use a tachometer to measure the speed and
feed it back to the PLC, which compares to the desired value and take a control action, then the signal is
transferred to the motor – via driver – to increase / decrease the speed. We will measure the speed of the motor
using an incremental rotary encoder by adjusting parameters (PLC, driver) and also we need to reduce the
overall cost of the system. Our control system will be held using the available Siemens PLC. In addition, we will
monitor motor parameters via SCADA system.
Maintaining Data Confidentiality in Association Rule Mining in Distributed En...IJSRD
The data in real world applications is distributed at multiple locations, and the owner of the databases may be different people. Thus to perform mining task, the data needs to be kept at central location which causes threat to the privacy of corporate data. Hence the key challenge is to applying mining on distributed source data with preserving privacy of corporate data. The system addresses the problem of incrementally mining frequent itemsets in dynamic environment. The assumption made here is that, after initial mining the source undergoes into small changes in each time. The privacy of data should not be threatened by an adversary i.e. the miner and target database owner should not be able to recover original data from transformed data.
Performance and Emission characteristics of a Single Cylinder Four Stroke Die...IJSRD
The current trends in CI engine are to use Water-diesel emulsion as alternative fuel. It can be employed directly to the existing CI Engine system with no additional modifications. This system helps in reduction of NOx as well as PM, which in turn improve the combustion efficiency of the engine. However there are still investigations have to be done. The current work mainly concentrated on diesel engine run on water-diesel emulsions and its effect on engine performance and emissions were studied. The various loads were applied on a constant speed diesel engine run on water-diesel emulsions of varying ratios of 0.2:1, 0.3:1. 0.4:1 and 0.5:1. Emission and performance characteristics were measured and were compared with base diesel operation. The emissions like NOx and smoke density were found to decrease greatly and brake thermal efficiency was found to increase at high loads. Smoke level was 4.2 BSU and 3 BSU for base diesel and water diesel emulsion of 0.4. The ignition delay was found to increase with water diesel emulsions. This also increased the maximum rate of pressure rise and peak pressure. The engine was found to run rough with water-diesel emulsions. The optimal water-diesel ratio was found to be 0.4:1 by weight. HC and CO emissions were found to increase with water diesel emulsions.
Preclusion of High and Low Pressure In Boiler by Using LABVIEWIJSRD
Pressure is an important physical parameter to be controlled in process boiler, heat exchanger, nuclear reactor and steam carrying pipeline. In the article the issue has been face in boiler operation due to pressure is handled. In boiler, the problem is due to maximum and minimum range of pressure. Due to the issues there is a chance to causes the hazop. To avoid such the problem the high and low pressure in boiler has to control. In the paper such the problem has sorted out by implementing ON-OFF control. Here the proposed control action for pressure control is implemented with the help of LabVIEW (Laboratory Virtual Instrument Engineering Workbench) software and NI ELVIS hardware. In the idea the boiler’s low range and high is monitored and controlled valve desirably. And also the high range and low range of pressure in the boiler is signified to plant operator by alarm signal.
Prevention and Detection of Man in the Middle Attack on AODV ProtocolIJSRD
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Analysis of Induction Motor Speed Control Using SCADA Based Drive Operated System
1. IJSRD - International Journal for Scientific Research & Development| Vol. 3, Issue 10, 2015 | ISSN (online): 2321-0613
All rights reserved by www.ijsrd.com 371
Analysis of Induction Motor Speed Control Using SCADA Based Drive
Operated System
Mihir K.Patel1
Hemish R.Choksi2
1
Assistant Professor 2
Lecturer
1,2
Department of Electrical Engineering
1
SCET, Saij, Kalol2
Government Polytechnic, Himmatnagar
Abstract— This Paper represents the analysis of induction
motor speed control using VFD (Variable Frequency Drive)
system operated by PLC-SCADA system. The main aim of
the paper is to dealt with the concept of speed control of a
three-phase induction motor with energy saving. To do so, a
VFD (Variable Frequency Drive) is used for controlling the
speed of a three-phase induction motor with variable load
attached to the motor. It certainly leads to the best
performance and high efficiency of the induction motor.
Programmable Logic Controller (PLC) and Supervisory
Control And Data Acquisition (SCADA) are two new
systems to control a Variable Frequency Drive (VFD)
whose output is given to a three-phase induction motor and
driving a conveyor belt. The conveyor belt has three sensors
are inputs which senses a passing object and carries out the
necessary instructions programmed in ladder logic
programming of the PLC through the computer (PC). The
SCADA software installed in the PC in turn enables the
human operator to control the entire operation away from
the plant and just by using the virtual inputs designated on
his computer screen.
Key words: Supervisory Control, Data Acquisition Systems
I. INTRODUCTION
A new trend to adjust the speed of a three phase induction
motor is by using variable frequency drives. Generally, an
induction motor can run only at its rated speed when it is
connected directly to the main supply. However, many
applications need variable speed operations. In most of the
applications the input power is directly proportional to the
cube of motor speed. In certain applications like induction
motor-based centrifugal pump, a speed reduction of 20%
results in an energy saving of approximately 50%. In
today’s modern era, driving and controlling the induction
motor efficiently are the two important constraints. With the
new innovations developed in the semiconductor fabrication
technology, the size and the price of semiconductors have
drastically gone down, which means that the end user can
replace an energy inefficient mechanical motor drive and
control system using a Variable Frequency Drive (VFD).
The VFD not only controls the motor speed, but can
improve the motor’s dynamic and steady state
characteristics as well. In addition, the VFD can reduce the
system’s average energy consumption. The notable thing
about this paper is its high degree of flexibility and its
remote control. A prototype of commercial conveyor belt
system, controlled using programmable logic controller
(PLC) is proposed and the whole process is monitored using
supervisory control and data acquisition (SCADA). This
system provides the VFD controlling for induction motor
speed control and energy saving. Its remote control and
monitoring makes the system easily accessible and simple
for motor speed control.
II. RELATED WORK
Research to study variable frequency drive and its energy
savings Paper tells about Simulation and circuit analysis of
result then How to change of motor speed and Waveform
analysis of speed torque, voltage, and current. From the
paper “monitoring and control of a variable frequency drive
using PLC and SCADA” I learn the function of PLC
(PROGRAMMABLE LOGIC CONTROLLER) and
SCADA (SUPERVISORY CONTROL AND DATA
ACQUISITION SYSTEMS).
Control platforms: - Most drives use one or more of the
following control platforms:
– PWM V/Hz scalar control
– PWM field-oriented control (FOC) or vector control
– Direct torque control (DTC)
Fig. 1: Motor speed control using PWM method
These motor drives are designed to be used in
conjunction with a 3-phase induction motor. Because these
motors typically only have an on/off state of operation, a
VFD is needed if multiple operation speeds are desired.
Also, apart from selectable speeds, the efficiency of the
overall system is increased due to the fact that the motor
only sees the necessary amount of input power to achieve
desirable output power. Also, the motor can be slowly
brought up to speed, eliminating huge start-up current
spikes.
III. COMPONENT DESCRIPTION OF THE PROPOSED SYSTEM
A. Variable Frequency Drive (VFD): -
A Variable Frequency Drive is used for applications
wherein speed control is of an essential importance due to
load changes wherein the speed needs to be increased or
decreased accordingly. Traditional methods in existence
have addressed this issue, each with their own drawbacks
such as high motor starting current, lower power factor,
energy losses, etc. To address these problems, VFD provides
a flexible approach as compared to traditional methods of
speed control especially for certain applications which do
not require a constant speed at all times.
2. Analysis of Induction Motor Speed Control Using SCADA Based Drive Operated System
(IJSRD/Vol. 3/Issue 10/2015/071)
All rights reserved by www.ijsrd.com 372
Fig. 2: Variable Frequency Drive of Hitachi
To name an example, a pump delivering cooling
liquid supply may require peak load operation only for a
requisite period of time and may require only much less
amount during the remainder of the day. VFD will allow the
speed of the pump to run at a lower rate in such case thereby
enabling energy saving benefits.
B. Programmable Logic Controller (PLC): -
With the advent of technology and availability of motion
control of electric drives, the application of Programmable
Logic Controllers with power electronics in electrical
machines has been introduced in the manufacturing
automation systems. The use of PLC in automation
processes increases reliability and flexibility and also
reduces production costs. To obtain accurate industrial
electric drive systems, it is necessary to use PLC interfaced
with power converters, personal computers and other
electric equipment. A PLC based control system was set up
comprising of an Allen-Bradley PLC, an Allen-Bradley
Power Flex 4M Variable Frequency Drive, a three-phase
induction motor and workstation ) has been delivered,
configured and integrated together for the monitoring and
control of a motor driving a conveyor load. Various control
schemes have been used to operate the induction motor in
speed and position control modes of operation using PLC
programming developed on the workstation.
Fig. 3: Proposed system
C. Supervisory Control And Data Acquisition Systems
(SCADA) : -
SCADA is a system which exercises supervisory control of
a particular device from a remote location and the human
operator is able to monitor and control the device from his
computer screen without being physically present near the
device. A PLC based control system was set up comprising
of an Allen-Bradley PLC, an Allen-Bradley Power Flex 4M
Variable Frequency Drive, a three-phase induction motor
and workstation (personal computer) has been delivered,
configured and integrated together for the monitoring and
control of a motor driving a conveyor load. Various control
schemes have been used to operate the induction motor in
speed and position control modes of operation using PLC
programming developed on the workstation. Figure 4 shows
the real time control set up which was configured and tested
for the experiment.
Fig. 4: The real time control set up
IV. PROPOSED MECHANISM
The motor speed can be controlled by varying supply
frequency. Voltage induced in stator is directly proportional
to product of supply frequency and air-gap flux. If stator
drop is neglected, terminal voltage can be considered
proportional to product of frequency and flux. V α f.Φ
Effect of supply frequency changes without terminal voltage
change:
Reduction of supply frequency without change in
terminal voltage will cause an increase in the air gap flux
thereby saturating the motor. This will cause the increase in
magnetizing current, core loss and stator copper loss and
cause distortion in line current and voltage and produce
high-pitch noise.
Increase of supply frequency without change in
terminal voltage will cause decrease in flux therefore
leading to reduction of torque capability of the motor.
Figure 5 shows the Torque-Speed characteristics of
an induction motor supplied directly from the main supply
Fig. 5: Torque speed characteristics of induction motor
3. Analysis of Induction Motor Speed Control Using SCADA Based Drive Operated System
(IJSRD/Vol. 3/Issue 10/2015/071)
All rights reserved by www.ijsrd.com 373
A. Overview of the Proposed Mechanism: -
A Variable Frequency Drive is a device used in a drive
system consisting of the following three main sub-systems:-
AC motor, main drive controller assembly, and drive
operator interface. The AC electric motor used in a VFD
system is a three-phase induction motor which is generally
the most economical motor choice. The VFD controller is a
solid state power electronics conversion system consisting
of three distinct sub-systems: a rectifier bridge converter, a
direct current link, and an inverter. In a VSI drive, the DC
link consists of a capacitor which smoothens out the
converter's DC output ripple and provides a stiff input to the
inverter. This filtered DC voltage is converted to quasi-
sinusoidal AC voltage output using the inverter's active
switching elements. VSI drives provide higher power factor
and lower harmonic distortion than phase-controlled Current
Source Inverter. VFD control has been chosen specifically
because they provide the advantages of energy savings, low
motor starting current, reduction of thermal and mechanical
stresses on motors and belts during starts, simple
installation, high power factor and lower KVA. A PLC-
SCADA based control system has been set up comprising of
an Allen-Bradley PLC, an Allen-Bradley Power Flex 4M
Variable Frequency Drive, a three-phase induction motor
and the workstation has been developed, configured and
integrated together for the monitoring and control of the
motor driving a conveyor belt load. Various control schemes
have been used to operate the induction motor in Speed and
Position control modes of operation using PLC
programming and through animated SCADA screens
developed on the workstation. Variable Frequency Drives
are generally required because many applications are not run
at the same speed all of the time due to surrounding
circumstances. The revolutions per minute of the driven
shaft need to be increased or decreased depending on load
changes, application requirement or other circumstances.
The PLC has been connected to control and monitor a VFD
which is the acts as a go-between the three-phase induction
motor and the PLC. A conveyor load is connected to the
induction motor and three proximity sensor inputs are
connected uniformly across the conveyor. The forward
direction of the motor is controlled by the first sensor, the
second sensor directs the motor to pause for a given period
of time and the reverse direction of the motor is controlled
by the third sensor. The sensor inputs are fed to the PLC
which processes the inputs according to the ladder logic
programming and initiates corresponding output to the VFD.
Fig. 6: System layout diagram
The VFD in turn once again processes the PLC
input to it and accordingly controls the speed and position of
the three-phase induction motor. Ladder logic programming
is carried out in RS-Logix in the personal computer.
SCADA elements are written into the ladder logic program
itself by assigning a tag or point which represents a single
input or output value monitored or controlled by the system.
With the help of SCADA system, labour costs are reduced
by minimizing site visits for inspection, data collection and
making rectifications. User defined controls such as start,
stop are developed on the software window in order to
control the system remotely. Figure 6 shows the system
layout diagram. Figure 7 shows the SCADA screen shot of
animation of the plant which was previously controlled by
the ladder logic program. This type of motor control is
helpful when the operator has to control the motor from a
remote location directly through the screen of the
workstation.
Fig. 7: SCADA screen shot of animation of real-time control
setup
V. CONCLUSION
This paper describes the details of VFD, PLC, SCADA and
their working with their figures. There are different methods
which are used for Induction motor speed control also
reviewed in this paper. From this paper we conclude that
Using SCADA based drive operating system we can easily
control the speed of 3-phase induction motor. The torque
speed characteristics also show the torque-speed control
using proposed mechanism. This proposed method is very
efficient and accurate for automation based 3-phase
induction motor speed control using VFD drive.
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