Starting method for Hall-less single-phase BLDCM

Details Starting method for Hall-less single-phase BLDCM Starting method for Hall-less single-phase BLDCM

2007-07-10

2007-07-10

Masih, Karen (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S434000, C318S132000, C318S521000, C318S505000, C388S928100

Reexamination Certificate

active

11284018

ABSTRACT:
The methods for starting a Hall-less single-phase BLDCM having an asymmetrical air gap are proposed. The provided methods are employed to input a specific amount of current impulse and stop the current impulse at a specific time such that the rotor of the single-phase BLDCM having an asymmetrical air gap can be realized to rotate in the pre-determined direction through one of the cogging torque and the rotor inertia after that specific time so as to accomplish the normal starting of a motor without the Hall-effect sensor.

REFERENCES:
patent: 2003/0231875 (2003-12-01), Masino
patent: 2004/0189231 (2004-09-01), Peterson
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.

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