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The theoretical and practical development of a new suboptimal PWM switching strategy, based on well established regular sampling techniques, is presented. It is shown that this suboptimal PWM strategy closely approximates and exhibits many of the desirable performance characteristics of optimised PWM strategies based on minimised THD. The new suboptimal PWM strategy is based on a well defined modulation process which has the potential for on-line real-time microprocessor generation. This possibility is confirmed using both CAD and experimental results obtained from a microprocessor-controlled PWM inverter-drive system.
Bowes et al. (Tue,) studied this question.