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Simulation of AC Voltage Regulator in High Frequency Power System

K. Rajan, R. R. Venkadesh, Anitha Flozia Rajan, Harry Prince Rajan, I. Mahesh

Abstract


As the demand for electrical energy is increasing at a very rapid pace, it is difficult to cope with this increasing demand. This paper describes the working function of single phase AC voltage regulator in energy efficient high frequency power system. AC voltage controllers control the output voltage from a fixed voltage AC source without changing the frequency. In solid state control, there are two types of AC voltage regulators, first is on-off or integral – cycle control AC voltage regulator, and second is phase control switching AC voltage regulator. This paper explains the second type, the voltage magnitude is controlled using AC phased controlled switching. The high power semiconductors such as 3.3kV, 4,5kV, and 6.5kV insulated gate bipolar transistors and 4.5kV, 5.5kV insulated gate commutated thyristors are used in converter design ranging from kilowatt to to 10 MVA which are becoming price competitive in the market. The paper also describes the working function, wave form description and application of the AC voltage regulator in the high frequency power system. The high frequency AC voltage regulators are compact, light in weight, and cheaper in comparison to the conventional methods of using autotransformer or tap changing transformers. The circuit is simulated using MATLAB simulink and the output is verified.

Keywords


AC Voltage Controller, High Frequency Power Supply, Pushes Pull Parallel Resonant Inverter, Thyristors, Matlab Simulink Simulation.

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References


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