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4. An Optimized Discontinuous PWM Method to Minimize Switching Loss for Multilevel Inverters.

Author

Nguyen, Nho-Van, Nguyen, Bac-Xuan, and Lee, Hong-Hee

Subjects
*PERMANENT magnet motors, *SWITCHING theory, *ELECTRIC inverters, *PULSE width modulation, *ELECTRIC switchgear, *REACTIVE power, *DETECTORS, *EXPERIMENTS
Abstract

This paper presents a novel approach to analyze carrier-based discontinuous pulse width modulation (DPWM) method for multilevel inverters. The separation of the offset into the main and additional components shows the use for analyzing PWM control characteristics of multilevel inverters. The results are then applied to propose a novel minimized loss DPWM method by varying the offset depending on peak values of three-phase load currents. As results of avoiding commutations at high currents, the switching loss can be reduced. The proposed method is theoretically analyzed and verified by experimental results. [ABSTRACT FROM AUTHOR]

Published
2011
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