Abstract

This paper provides a simple yet very effective method of real-time on-line solution for the PWM-SHE technique that readily accommodates the elimination of a particular set of harmonics. Piece-wise linear representations of PWM-SHE switching angles are utilized to formulate the on-line linear equations. A detailed analysis of linearisation and on-line capability of an optimized PWM specific harmonic elimination technique is described. A NPC inverter configuration is chosen. For high power conversion, application of the PWM-SHE switching pattern to the NPC inverter yields substantially low switching losses with excellent output voltage/current waveform.

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