NDLI: A kriging assisted direct torque control of brushless DC motor for electric vehicles

Content Provider	IEEE Xplore Digital Library
Author	Xiang Liu Chengbin Ma Mian Li Min Xu
Copyright Year	2011
Description	Author affiliation: Institute of Automotive Engineering, Shanghai Jiao Tong University, China (Xiang Liu; Min Xu) \|\| Univ. of Michigan-Shanghai Jiao Tong Univ. Joint Institute, China (Chengbin Ma; Mian Li)
Abstract	Torque is one of the most important control factors for a vehicle's motion. Compared with internal combustion engine, electric motors can have a more accurate torque feedback. It is possible for EVs that are driven by electric motors to have better vehicle dynamic control performance. In EVs, direct torque control of the permanent magnet synchronous motor has been studied. However, because of non-ideal back EMF, direct torque control of brushless DC motors, which is different from that of permanent magnet synchronous motors, has not been widely used up to now. In this paper, a new method using kriging to calculate back EMF in real-time is presented. Kriging prediction can approximate the response of unobserved points based on information from observed points. With motor speed and rotor position as inputs, kriging prediction calculates back EMF as an output. Motor torque is then calculated using back EMF and three phase currents. Using kriging, motor torque can be directly estimated and be used as a feedback to the motor's controller. With this novel method, motor torque can be well controlled and the speed response is satisfactory.
Starting Page	1705
Ending Page	1710
File Size	512129
Page Count	6
File Format	PDF
ISBN	9781424499502
ISSN	21579563
e-ISBN	9781424499533
DOI	10.1109/ICNC.2011.6022349
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Torque Brushless DC motors Torque control Permanent magnet motors Synchronous motors
Content Type	Text
Resource Type	Article

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