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  • 1. EXPERT SYSTEMS AND SOLUTIONS48, North Street, Aranarai, Perambalur, Tamil Nadu, India. Email ID: expertsyssol@yahoo.com, Phone: 9345276362, 9865129743, ZERO VOLTAGE SWITCH A zero voltage switch (ZVS) DC link, single-phase, pulse width-modulated voltage source inverter (VSI) is proposed. Operating principleand various operating intervals of the converter are presented andanalyzed. Design consideration is discussed and a design example ofexperimental results from a laboratory model is also presented. In proposed ZVS DC link technique, the switch voltage is clampedto the dc link voltage and PWM scheme can be used to control theinverter output voltage. The PWM modulation scheme is modified toobtain optimum system performance and to achieve ZVS at differentpower factor loads. The design procedure is illustrated with a design example. Anexperiment prototype laboratory model 300V, 120V, 60HZ VSI operatingat 50KHZ is implemented using MOSFET and IGBTs. Experimentalresults confirm the theory and show the soft switching characteristics ofthe proposed VSI.
  • 2. EXPERT SYSTEMS AND SOLUTIONS48, North Street, Aranarai, Perambalur, Tamil Nadu, India. Email ID: expertsyssol@yahoo.com, Phone: 9345276362, 9865129743, FPGA Implementation of data acquisition for power system AbstractThe power plant monitoring and control system by implementing dataAcquistion is mainly to collect the real time parameters and to control ifit exceeds the pre-defined value. Implementation of this project in apower plant is to monitor and control the real time temperature , power,intruder security, water level. Whenever the real time variable obtainedgoes the threshold value designed, the power plant operation isautomatically shut down to avoid hazard condition.
  • 3. EXPERT SYSTEMS AND SOLUTIONS48, North Street, Aranarai, Perambalur, Tamil Nadu, India. Email ID: expertsyssol@yahoo.com, Phone: 9345276362, 9865129743, SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING ZIGBEE ENTECHNOLOGY ABSTRACTThe project titled ``SPEED CONTROL OF INDUCTION MOTOR USINGZIGBEE TECHNOLOGY” is a port of wireless automation. In this projectwe are going to speed of three phase induction motor from remote. Here,the speed of the induction motor is going to be control from Remote byvariable frequency control technique known as V/f control technique, inwhich natural Pulse Width Modulation technique is used to drive voltagesource inverter. The inverter driver circuit is commanded from remote byusing zigbee technology using PIC Pulse generator. The command isprogrammed on PC and then encoded & fed to Zigbee transmitter fromremote. The receiver will sense the command and further decoding itprovides to the PIC pulse generator .The signal received from pulsegenerator is amplified by driver circuit and fed to the VSI inverter.
  • 4. EXPERT SYSTEMS AND SOLUTIONS48, North Street, Aranarai, Perambalur, Tamil Nadu, India. Email ID: expertsyssol@yahoo.com, Phone: 9345276362, 9865129743,EMBEDDED BASED RADIO FREQUENCY SPEED CONTROL OF DCMOTOR The project ‘’EMBEDDED BASED RADIO FREQUENCY SPEEDCONTROL OF DC MOTOR’’ is used to varying Speed of The dc motor. It isneed a DC to DC converter is a Circuit Which converts a source ofdirect current (DC) from one voltage Level to Another. Linear regulators output can only in low in low voltage From the Input. They are very inefficient if the voltage drop is large and the Current highas they dissipate as heat, a power equal To the product of the outputcurrent and the voltage drop; Consequently are not normally used forlarge-drop high-current Application. It is practically if the current is low,the power Dissipated being small, although it may still be a large fractionof The total power consumed. Simple regulator power supply used Forhigher currents. A transformer generates a voltage when Rectified, is alittle higher than that needed to bias the linear Regulator. A Highfrequency MOSFET as the power electronics switch, It reduces switchinglosses. A 230V, 3000 rpm D.C loads to Demonstrate the convertersapplication in speed control. The simulation Of the code where done inkeil IDE pack. A second Module remote Control machine by using the 8relays. It is to be control 8 machines Remotely.

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