Low-Speed Rotating Restart and Speed Recording for Free-Running Sensorless IPMSM Based on Ultrahigh Frequency Sinusoidal Wave Injection

Li, Xinmin; Yan, Yan; Xu, Yamei; Chen, Wei; Shi, Tingna; Xia, Changliang

doi:10.1109/tpel.2022.3189208

Cited by 10 publications

(1 citation statement)

References 23 publications

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“…In this paper, a new type of VR resolver with three symmetrical windings is proposed, in which the three symmetrical single-layer winding structures of PMSM are applied to the resolver so that the winding direction, as well as the number of turns under all stator teeth of the resolver, are the same and the form of the winding distribution is a nonoverlapping distribution. The resolver-to-digital conversion (RDC) method of this novel resolver draws reference to the ultra-high frequency (UHF) injection method employed by Internal permanent magnet synchronous motors (IPMSM) during power-off and restarted conditions, enabling the calculation of the absolute rotor position of the resolver without utilizing conventional orthogonal RDC methods [24][25][26]. The proposed VR resolver is mainly used in PMSM drive systems for electric vehicles, which can simplify the structure and manufacturing process of the conventional VR resolver in order to speed up the production cycle of the resolver.…”

Section: Introductionmentioning

confidence: 99%

Optimization Design of Variable Reluctance Resolver Based on Three-phase Symmetrical Winding

Li,

Chen,

Zhang

2024

WEVJ

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In order to ease the structure and manufacturing process of the variable reluctance (VR) resolver, the three-phase symmetrical single-layer winding commonly used in the stator winding of permanent magnet synchronous motors (PMSM) is applied to the VR resolver in this paper. The proposed resolver has the same winding direction and number of turns on all teeth. And the non-overlapping distribution of the three-phase windings of the resolver is ensured. For this novel resolver, the resolver-to-digital conversion (RDC) method references the ultra-high-frequency (UHF) signal injection method used when a PMSM is powered off and restarted. Instead of the need for the orthogonal envelope RDC required by conventional resolvers, the absolute position of the rotor can be obtained. In this paper, the prototype of the proposed resolver and the peripheral circuits are fabricated and compared with the position detected by the optical encoder, and the validity of the proposed resolver and the accuracy of the RDC are verified by the results of the comparison experiments.

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Section: Introductionmentioning

confidence: 99%