Eui-Jae Lee and Kyo-Beum Lee, "Modulation Methods based on Phase-Shifted PWM for H-Bridge Multilevel Inverters," in Proc. WoW Conf., Nov. 2020. > Paper

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International Conference Eui-Jae Lee and Kyo-Beum Lee, "Modulation Methods based on Phase-Shifted PWM for H-Bridge Multilevel Inverters," in Proc. WoW Conf., Nov. 2020.

2020

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This paper analyzes the modulation methods based on phase-shifted PWM (PS-PWM) scheme for cascaded H-bridge multilevel

inverter (CHMI). The PS-PWM scheme is one of the modulation schemes for CHMI and it generates same power loss such as 

switching loss and conduction loss on each cell. However, the PS-PWM scheme leads to the most switching loss than the other 

schemes for CHMI. Because the switching loss causes failure of power semiconductor switch, it should reduce for reliability of CHMI. 

In this paper, it is compared and discussed that total harmonic distortion (THD) of modulation methods based on PS-PWM scheme 

for reducing switching loss. To analyze characteristic each modulation method, the simulation of 3-phase 5-level CHMI is conducted. 

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