1. Optimized Dv/dt Filter Design for SiC based Modular Multilevel Converters
- Author
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Longya Xu, Risha Na, Ziwei Ke, Yue Zhang, Rui Liu, Junchong Fan, Jianyu Pan, Jin Wang, Xiao Li, and Boxue Hu
- Subjects
business.industry ,Computer science ,05 social sciences ,Volume (computing) ,020207 software engineering ,02 engineering and technology ,Modular design ,Converters ,Inductor ,Motor drive ,Filter design ,Filter (video) ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,0501 psychology and cognitive sciences ,business ,050107 human factors ,Voltage - Abstract
In this paper, a dv/dt filter is designed for the modular multilevel converters (MMCs) based variable frequency motor drives. This concept utilizes the inherent arm inductors of the MMC as a part of the output low-pass filter, thus eliminating the need for an add-on inductor. Particularly, a mathematical model is proposed to optimize the filter loss and volume for a given dv/dt requirements. It turns out that with SiC-MOSFET-based high switching frequency operation, the dv/dt filter improves the output power quality and alleviates the voltage stress in motor drive applications. For applications with various requirements on filter volume and loss, weighted-sum optimal solutions are presented. Simulation results based on a seven-level MMC are provided to validate the theoretical analysis.
- Published
- 2020
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