Open AccessNovel MTPA control strategy for IPMSM based on multiple virtual signals injection
Author(s) -
Chen Bao,
Shen Anwen,
Luo Xin,
Dou Zhaolei,
Luo Pan
Publication year - 2020
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2019.0558
Subject(s) - control theory (sociology) , control (management) , control engineering , computer science , engineering , artificial intelligence
Virtual signal injection‐based maximum torque per ampere (MTPA) control method is widely employed for increasing the efficiency of the interior permanent magnet synchronous machine (IPMSM) due to its simple implementation. However, the conventional method utilises the filters to extract MTPA indicator, which limits the dynamic tracking performance of MTPA operating point. In order to improve the dynamic tracking performance, a novel strategy to use multiple virtual signals injection is proposed in this study. With the proposed method, four small virtual high‐frequency signals are constructed to extract the MTPA indicator information. The MTPA indicator can be calculated directly by solving multiple acquired equations instead of any filters. Due to the absence of filters which are essential in the conventional method, this proposed method shows good dynamic response. The feasibility of the proposed method is verified under various operating conditions with a 1.2 kW IPMSM drive system.