NDLI: Field weakening control of PMSM used in an electric power steering system

Content Provider	IEEE Xplore Digital Library
Author	Ji Xuewu Lv Yingchao
Copyright Year	2011
Description	Author affiliation: State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China (Ji Xuewu; Lv Yingchao)
Abstract	Presently, the direct current motor is widely used as an actuator in electric power steering system (EPS) for compact cars. When it comes to mid-size saloons, the permanent magnet synchronous motor (PMSM) is more suitable for numerical advantages. To acquire the smooth steering feeling, the motor's torque and speed should match well. However, the rated speed of the motor used in EPS is usually round 1000r/min, while under the condition of fast operating steering wheel the motor speed may be higher than 2500r/min. Therefore, it is necessary to carry out field weakening control of PMSM. In most cases, the stator's resistance is ignored when the field weakening control strategy is carried out. However, the stator's resistance should be taken into consideration in EPS application for high current and low voltage. This paper proposes a novel field weakening law of PMSM with consideration of motor stator resistance. The proposed law is verified by experiments on EPS test bench. And it is found that the heavy steering feeling problem under the fast operating steering wheel condition is solved by using the field weakening law proposed in this paper.
Starting Page	2194
Ending Page	2199
File Size	822428
Page Count	6
File Format	PDF
ISBN	9781424480364
e-ISBN	9781424480395
DOI	10.1109/ICEICE.2011.5776816
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resistance Field weakening Torque PMSM Stator resistance Wheels Stators Permanent magnet motors DC motors EPS Voltage control
Content Type	Text
Resource Type	Article

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