Abstract
A new approach to realizing a controller for a subharmonic pulse width modulation (PWM) three-phase inverter is presented, based on the use of a signal processor as a control unit. The approach has the merits of simplifying the implementation of high-quality, three-phase modulation techniques, combining almost all the advantages of the analog approach with the microcomputer, and reducing to a minimum the hardware. All these merits have been experimented by designing, building, and testing an Intel 2920-based controller for an application of interest. The hardware structure of the controller, the procedure of developing its software and the results of the most significant tests are provided.
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