Distortion-Minimizing Flux Observer for IPMSM Based on Frequency-Adaptive Observers

被引:39
作者
Kim, Hyeon-Sik [1 ]
Sul, Seung-Ki [1 ]
Yoo, Hyunjae [2 ]
Oh, Jaeyoon [2 ]
机构
[1] Seoul Natl Univ, Dept Elect & Comp Engn, Seoul 08826, South Korea
[2] LG Elect Inc, Power Elect Lab, Seoul 08592, South Korea
关键词
DC rejection; flux observer; frequency-adaptive observer; harmonic attenuation; interior permanent-magnet synchronous machine (IPMSM); DEADBEAT-DIRECT TORQUE; SYNCHRONOUS MACHINES; CURRENT REGULATORS; LINKAGE OBSERVER; DESIGN;
D O I
10.1109/TPEL.2019.2920691
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
For stable and efficient drives of interior permanent-magnet synchronousmachines (IPMSMs), stator flux should be observed across a wide speed range. However, distortions such as a dc offset and low-order harmonics are contained in the estimated flux due to various reasons. In this paper, a distortion-minimizing flux observer is proposed to suppress the effects of dc offset and harmonics by implementing frequency-adaptive observers. The proposed frequency-adaptive flux observer is designed to extract a fundamental flux while keeping a simple structure even if the rotating speed of the IPMSM varies. The fundamental flux could be estimated by the proposed current- and voltage-model based flux observer, which is implemented with the frequency-adaptive observer and harmonic extractors. Moreover, parameter sensitivity and model transition are discussed to improve the performance of the proposed observers. The validity and effectiveness of the proposed methods are verified with simulation and experimental results.
引用
收藏
页码:2077 / 2087
页数:11
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