An on-line optimal approach to PWM-SHE gating signal generation

A simple and low cost method of generating the PWM specific harmonic elimination (PWM-SHE) switching signals to drive a three-phase voltage source inverter VSI is presented. This novel approach computes the switching angles online using a PC and provides the flexibility of eliminating different sets of VSI output harmonics in a quick and easy manner without any hardware change. The validity of selected PSPICE circuit result has been verified experimentally.

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