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JEET, Vol. 13, No. 1, January 2018
Comparative Study on SVPWM Switching Sequences for VSIs
G. Vivek
Area B - Electric Machinery and Power Electronics
Abstract Paper presents a comparative study of space vector pulse width modulation (SVPWM) switching sequences for Voltage Source Inverters (VSIs). Various SVPWM switching sequences are studied for two and three level VSIs in linear modulation index region. The computations of dwell times are presented for two and three level VSIs based on space vector geometry in a synchronized and optimized manner. The existing SVPWM switching sequences are implemented using Matlab / Simulink and in an experimental setup for three phase two and three level VSIs. The simulation and experimental waveforms of conventional SVPWM (CSVPWM) and bus clamped SVPWM (BCSVPWM) are demonstrated for two and three level inverter respectively. The performance of different SVPWM switching sequences are evaluated and presented based on weighted voltage total harmonic distortion (THD).
Keyword Voltage source inverter,Space vector pulse width modulation,Bus Clamping Strategies (BCS)
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