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Nowadays, there is an increasing interest toward multiphase drives, particularly for medium- and high-power applications. In this paper, some modulation strategies for multiphase voltage-source inverters are compared and the modulation strategy with the minimum switching losses is determined. If the switching devices of the inverter are insulated-gate bipolar transistors or bipolar junction transistors,...
This paper describes improvement of Z-source inverter (ZSI) properties possible due to advanced PWM methods. Switching conditions and distribution of semiconductor power losses in the ZSI are analyzed. Two new PWM methods are proposed, including Asymmetric Optimized Switching Type (AOST) with efficiency improvement by 2,7%. Considerations are illustrated with datasheet based calculations, simulation...
Nowadays there is an increasing attention towards multiphase drives, especially for medium and high power applications. In this paper some modulation strategies for M-phase inverters are compared and the modulation strategy with the minimum switching losses is determined. If the switching devices of the inverter are IGBTs or BJTs, this modulation strategy turns out to be the one with the minimum total...
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