High Frequency Power Generation Using Cycloinverter with SVM

作者：Agarwal Preeti^*; Agarwal Anshul; Agarwal Vineeta

来源：International Review of Electrical Engineering, 2012, 7(6): 6005-6013.

• Cycloinverter
• Space Vector Pulse Width Modulation (SVPWM) Technique
• Field-Programmable Gate Array (FPGA)

Continuous need for an increased power density leads to a growing demand for high speed motors. Due to the quasi linear relation between rotational speed and shaft power of an electrical machine, increasing the rated speed is an effective way to boost power density and efficiency. Thus, high speed motor elements contribute partly to the ongoing development of green energy applications. This paper proposes high frequency power generation using cyclo-inverter with field programmable gate array (FPGA) based controller. Trigger pulses for the cycloinverter are generated using Hardware Description Language VHDL. Space vector modulation (SVM) technique, usually applied for inverters and matrix converters is modified for applying it in cycloinverter so as to obtain an output with reduced harmonic distortion. The software package MATLAB (Simulink) is used to determine the harmonics in the output and to calculate total harmonic distortion factor (THD). Lowest THD has been achieved to be 4.068% when output frequency of cycloinverter is varied from 50 Hz to 1 MHz. Simulated results are validated experimentally using a low-cost Xilinx Spartan-3E FPGA kit The trigger circuit is tested qualitatively by observing various waveforms on oscilloscope. The experimental results are found in close agreement to the simulated results.

• 出版日期2012-12