Motor driving apparatus

Details Motor driving apparatus Motor driving apparatus

2011-01-18

2011-01-18

Benson, Walter (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Pole changing motor winding circuits

C318S400390

Reexamination Certificate

active

07872439

ABSTRACT:
A controller for a motor driving apparatus switches a direction of electricity flowing through a first coil according to a first lead angle signal obtained based on a first magnetic pole detecting signal and a second magnetic pole detecting signal. The controller switches a direction of electricity flowing through a second coil according to a second lead angle signal obtained based on the first magnetic pole detecting signal and the second magnetic pole detecting signal. Thus, a motor driving apparatus can be configured such that the angle of the rotation center of the rotor with respect to two magnetically sensitive poles can freely be selected.

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patent: 5990651 (1999-11-01), Iwazawa et al.
patent: 6700240 (2004-03-01), Akiwa
patent: 6759827 (2004-07-01), Kawashima
patent: 6791219 (2004-09-01), Eric et al.
patent: 6954042 (2005-10-01), Lee et al.
patent: 7294988 (2007-11-01), Ajima et al.

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