Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2005-11-21
2008-03-18
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S434000, C318S132000
Reexamination Certificate
active
07345440
ABSTRACT:
A method for starting a motor having a stator, a rotor, a winding and an asymmetrical air gap is accomplished using several steps. The steps include: (a) providing the motor at standstill; (b) exciting the winding for a specific time period with a current impulse having a first amplitude to obtain a first specific position of the rotor with respect to the stator; (c) decreasing the first amplitude down to a second amplitude gradually by a controller to make the rotor to be positioned at a second specific position with respect to the stator after the specific time period, wherein the second amplitude is one of zero ampere and a specific value close to zero ampere, and the rotor is rotating close to the second specific position with an almost zero rotating speed when the second amplitude is reached.
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S. Bentouati, Z.Q. Zhu and D. Howe, “Permanent Magnet Brushless DC Motors For Consumer Products” (http://mag-net.ee.umist.ac.uk/reports/P11/p11.html), printed Oct. 28, 2005.
Huang Shih-Ming
Huang Wen-Shi
Jin Wanbing
Wang Weizi
Wu Zhigan
Colon Eduardo
Delta Electronics , Inc.
Donovan Lincoln
Volpe and Koenig PC
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