A. Agarwal

Motilal Nehru National Institute of Technology, Allahābād, Uttar Pradesh, India

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Publications (4)6.5 Total impact

  • P. Agarwal, A. Agarwal, V. Agarwal
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    ABSTRACT: Frequency converter may be used to control the speed of AC motors, in airline industries, induction heating, fluorescent lighting, ballast, high frequency power supplies and so on. It has a advantage of eliminating one or more intermediate converters. The use of self-commutated switches with PWM control can significantly improve the performance of frequency converter. This paper presents FPGA based space vector modulated (SVM) trigger controller applied to a frequency converter where trigger pulses are generated Hardware Description Language VHDL in Xilinx. The output waveforms have been synthesized for different value of output frequency. The trigger circuit has been tested qualitatively by observing various triggering pulses on Xilinx ISE simulator and then verified with experimental results. The operation of proposed system has been found satisfactory.
    Telecommunications Energy Conference (INTELEC), 2011 IEEE 33rd International; 01/2011
  • A. Agarwal, V. Agarwal
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    ABSTRACT: This paper proposes a novel power electronic application, which is an IGBT-based frequency converter that performs the function of both cycloconverter and cycloinverter by changing the 2-b input parameter. It finds its application in speed control of induction motor, induction heating, fluorescent lighting, ballast, high-frequency power supplies, and so many other applications. A methodology is developed to generate the trigger signals for various IGBTs used in frequency converters such that the circuit is not restricted to a particular value of output frequency but it can produce any output frequency that is an integer multiple of the input supply frequency. The output of the converter has been improved using delta-modulation technique. Hardware design is obtained using readily available ICs and other components. The trigger circuit has been tested qualitatively by observing waveforms on CRO. The operation of the proposed system has been found to be satisfactory.
    IEEE Transactions on Industrial Electronics 12/2010; · 6.50 Impact Factor
  • A. Agarwal, V. Agarwal
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    ABSTRACT: Trapezoidal modulation technique has been applied in AC to AC converter to reduce harmonics in the output. Both step up and step down operation of the converter has been studied for different output frequencies. Simulation results are shown for single-phase to single-phase converter configuration using the software SIMULINK. Minimum total harmonic distortion in the output has been found to be 5% for cyclo-inverter operation for a frequency range of 500 to 750 Hz. During cyclo-converter operation it reduces to 1.2% up to a frequency range of 1 Hz to 16.66 Hz which is generally recommended mode of cyclo-converter.
    Power Systems, 2009. ICPS '09. International Conference on; 01/2010
  • P. Agarwal, A. Agarwal, V. Agarwal
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    ABSTRACT: This paper proposes FPGA based space vector modulated (SVM) trigger controller that may be applied to a frequency converter used for high speed electrical drives, speed control of AC motor, induction heating, fluorescent lighting, ballast, high frequency power supplies and so on. To generate space vector pulse width modulated trigger pulses for the converter pperipheral input-output and FPGA interfacing has been developed through Xilinx 9.2i. In order to relieve the controller from the time consuming computational task of PWM signal generation, method of space vector PWM signal generation is implemented on FPGA using Hardware Description Language VHDL in Xilinx. Simulated results are shown on ISE-Simulator and they are found to be satisfactory.
    Power, Control and Embedded Systems (ICPCES), 2010 International Conference on; 01/2010

Publication Stats

8 Citations
6.50 Total Impact Points

Institutions

  • 2010
    • Motilal Nehru National Institute of Technology
      • Department of Electrical Engineering
      Allahābād, Uttar Pradesh, India