Star and Delta Hybrid Connection of a FSCW PM Machine for Low Space Harmonics

Zhao, Wenxiang; Zheng, Junqiang; Ji, Jinghua; Zhu, Shengdao; Kang, Min-Jae

doi:10.1109/tie.2018.2807365

Cited by 57 publications

(12 citation statements)

References 26 publications

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“…Fitted model needs to be evaluated by the fitting degree of response surface. The evaluation indexes of response surface are multiple correlation coefficient R 2 and improved multiple correlation coefficient R adj 2 , as shown in ( 22) and ( 23), respectively.…”

Section: A Parameter Fitting Of Combined Magnetic Polementioning

confidence: 99%

“…With the development of society and economy, environment deterioration and energy shortage are getting more and more concerns. Compared with fuel vehicles, electric vehicles (EVs) have the advantages of low emissions, high-energy conversion efficiency, and they are considered as an important way to deal with the above problems [1,2]. Due to the high power density and high efficiency, PMSMs have been widely used in EV application [3].…”

mentioning

confidence: 99%

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Analysis and Optimization of a V-Shape Combined Pole Interior Permanent-Magnet Synchronous Machine With Temperature Rise and Demagnetization Considered

Wang

Zhu

Zhou³

et al. 2021

IEEE Access

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Interior permanent-magnet synchronous machines (IPMSMs) have the advantages of high efficiency, high power density and outstanding flux-weakening ability, which make them widely adopted in electric vehicles (EVs). Conventional IPMSMs using rare-earth permanent magnet (PM) materials face the problems of instable price and irreversible demagnetization under extreme operating conditions. To overcome these shortcomings, a V-shape combined pole IPMSM (VCP-IPMSM) is proposed, in which NdFeB PMs at the outer ends of V-shape pole are replaced by ferrite PMs. The improvement of the magnetic-pole scheme on air-gap flux density is analyzed, and the influences of the magnetic-pole geometries on electromagnetic performance are investigated. The thermal circuit model of VCP-IPMSM is established, and the demagnetization characteristics of the machine at different temperatures are analyzed, by which the thermal and demagnetization constraints of magnetic pole are obtained. The genetic algorithm based on response surface models is applied to optimize the magnetic-pole cost and electromagnetic torque simultaneously. Accordingly, with thermal and demagnetization constraints integrated with the optimization method, an optimum scheme is obtained. In comparison with the conventional IPMSM with single-material pole, the proposed VCP-IPMSM is proved to be able to promote the air-gap flux density quality, improve the antidemagnetization ability at high temperature, and decrease the rare-earth PM consumption with the output torque remaining unchanged.

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Section: A Parameter Fitting Of Combined Magnetic Polementioning

confidence: 99%

mentioning

confidence: 99%

Analysis and Optimization of a V-Shape Combined Pole Interior Permanent-Magnet Synchronous Machine With Temperature Rise and Demagnetization Considered

Wang

Zhu

Zhou³

et al. 2021

IEEE Access

View full text Add to dashboard Cite

show abstract

“…Interior permanent magnet synchronous motors (IPMSMs) have attracted increasing interest in plenty of fields such as rail transit for the advantages of high torque density, high power density, high efficiency and wide constant power operating range [1]- [4]. With the improvement of power electronics, permanent magnet materials, and motor design and optimization technologies [5], [6], multiphase motor drive systems have experienced rapid development during the last decade.…”

Section: Introductionmentioning

confidence: 99%

Sensorless Control for Five-Phase IPMSM Drives by Injecting HF Square-Wave Voltage Signal into Third Harmonic Space

Geng

Chen

2020

IEEE Access

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Compared with the conventional three-phase motor, the five-phase interior permanent magnet synchronous motor (IPMSM) has better advantages on fault-tolerance due to redundant freedom. In order to obtain further fault-tolerance, this paper proposes a new high frequency (HF) signal-injection-based sensorless control strategy for five-phase IPMSM drives. The key is to extend the position sensorless technology based on HF signal injection into the five-phase motor control system, especially proposing a sensorless control method by injecting a HF square-wave voltage signal into the third harmonic space. The induced HF current responses in the third harmonic space can be utilized to track the rotor speed and position accurately. Compared with the conventional HF sinusoidal signal injection methods, the proposed method can effectively reduce the influence of digital filters, such as time delay and decreased performance because the low-pass-filter (LPF) is removed. In addition, the torque ripple caused by the proposed injection method in third harmonic space is reduced compared with the method in fundamental space. The effectiveness of the proposed method is verified by simulation and experimental results. INDEX TERMS Sensorless control, five-phase interior permanent magnet synchronous motor, third harmonic space, HF square-wave voltage injection (HF-SVI).

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“…The star-delta hybrid connection windings configuration was systematically studied in Ref. [13] to reduce the MMF sub-harmonics by shifting the current phase angle. Additionally, multi-phase and phase-shift designs were adopted in Refs.…”

Section: Introduction1mentioning

confidence: 99%