Abstract
This paper presents the analysis of harmonic and switching loss for two-level space vector based pulse width modulation (PWM) schemes. The harmonic performance of the inverter is evaluated through weighted voltage total harmonic distortion for different modulation indices. To calculate switching loss, analytical expressions for switching instants are generated by comparing the triangular carrier signal with the equivalent modulating signals corresponding to space vector based modulation schemes and switching instants are obtained in terms of Kapteyn series. The losses are compared analytically for three popular space vector based modulation schemes, namely conventional space vector PWM, 60° bus clamping PWM and 30° bus clamping PWM.
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