On‐line dead‐time compensation method for dual three phase PMSM based on adaptive notch filter

Autor: Ruicheng Chen, Han Peng, Zitao Le, Zou Lai, Yiwen Geng, Chen Xiang
Rok vydání: 2021
Předmět:
Zdroj: IET Power Electronics, Vol 14, Iss 15, Pp 2452-2465 (2021)
ISSN: 1755-4543
1755-4535
DOI: 10.1049/pel2.12192
Popis: For the dual three‐phase permanent magnet synchronous motor(dual‐PMSM), the deadtime can introduce fifth and seventh current harmonics, and they are only constrained by the small stator leakage impedance, which means even if there are only small fifth and seventh voltage harmonics, the resulting fifth and seventh current harmonics will be very large. The harmonic current will make an increment of the system loss, thus lead to an reduce of the efficiency of the speed control system. This paper proposes a harmonic current suppression strategy for dual‐PMSM based on least mean square (LMS) adaptive notch filter. This strategy suppresses the fifth and seventh harmonic currents by introducing four LMS adaptive notch filters in the subspace. The proposed algorithm has good dynamic performance and is insensitive to motor parameters that are offset within a certain range. The effectiveness of proposed method is verified by a set of comparative simulations and experiments.
Databáze: OpenAIRE
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