Deadbeat Control Strategy for Improving the Harmonic Characteristics of Medium Voltage MMC

doi:10.11930/j.issn.1004-9649.202109135

Abstract

Abstract: In order to solve the problem of current distortion of the modular multilevel converter (MMC), this paper proposes the deadbeat control strategy for the medium voltage MMC. In each control period, the strategy calculates the number of on-off sub-modules according to the difference between the actual and reference AC current, so the MMC can increase its switching frequency with low switching times. At the same time, the proposed strategy needs no proportional integral (PI) control and fewer times of coordinate transformation, so it has the faster speed of calculation.

Key words: modular multilevel converter, medium voltage DC distribution network, deadbeat current control, current distortion

GUO Hanchen, WANG Chen, FAN Ying, WANG Yi, TIAN Yanjun, TAN Kaidong. Deadbeat Control Strategy for Improving the Harmonic Characteristics of Medium Voltage MMC[J]. Electric Power, 2022, 55(8): 165-170.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202109135

https://www.electricpower.com.cn/EN/Y2022/V55/I8/165

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