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PWM Strategies

T05.9 - Analytical Description and Voltage Accuracy Improvement for Natural Overmodulation Methods Applied on a Two-Level Voltage Source Inverter

Tuesday, March 24, 2026
11:40 AM - 12:00 PM CT
Location: 217A
Since the 1980s overmodulation (OM) methods have been published to maximize the headroom of the fundamental AC voltage and thus to increase the system efficiency. Nevertheless, in highly cost-driven businesses like the automotive market, there are very less resources left on runtime while the need for accuracies and dynamic is extremely high. A beneficial implementation of OM is given by so-called natural methods insisting on overshooting and clipping strategies. The paper will derive closed mathematical functions for natural OM methods and provide both a novel sensitivity study of PWM parameters as well as a novel strategy to improve the fundamental voltage accuracy.