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- Title
Sensorless Speed Control with Initial Rotor Position Estimation for Surface Mounted Permanent Magnet Synchronous Motor Drive in Electric Vehicles.
- Authors
Xuan Wu; Hui Wang; Shoudao Huang; Keyuan Huang; Li Wang
- Abstract
The accurate information of the initial rotor position is very critical for successful starting of the Surface-mounted Permanent Magnet Synchronous Motor (SPMSM). In order to solve the problems of low accuracy and unreliability in the conventional estimation strategy, in this paper, an improved initial rotor position estimation strategy without any position sensor for SPMSM at standstill is proposed based on rectangular pulse voltage injection. In the work, when the second series of pulse voltages were applied. By the ways of strengthening the effect of weakening or strengthening magnetic fields and increasing the difference between each current of the vector. The improved strategy enhanced reliability and raised the initial position estimation accuracy from 7.5° to 1.875°. The improved strategy does not need any additional hardware. Experimental results demonstrate the validity and usefulness of the improved strategy.
- Subjects
SENSORLESS control systems; PERMANENT magnets; SURFACE mount technology; SYNCHRONOUS electric motors; ELECTRIC vehicles
- Publication
Energies (19961073), 2015, Vol 8, Issue 10, p11030
- ISSN
1996-1073
- Publication type
Article
- DOI
10.3390/en81011030