Method and apparatus for controlling asynchronous motors

Details Method and apparatus for controlling asynchronous motors Method and apparatus for controlling asynchronous motors

2007-06-28

2009-12-08

Ip, Paul (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S034000, C318S066000, C318S293000, C318S494000, C123S406130

Reexamination Certificate

active

07629756

ABSTRACT:
Methods and apparatus are provided for controlling first and second motors. A controller includes a processor supplying a control signal for driving the motors and a logic circuit coupled to the processor. The processor produces a first trigger coordinated with the rate of the first motor and a second trigger coordinated with the rate of the second motor. The logic circuit produces a third trigger from a combination of the first and second triggers. The processor includes a converter for sampling the currents of the motors in response to the third trigger. The processor further produces a modified pulse width in the first trigger if a period between the first and second triggers is less than a predetermined limit and directs the converter to consecutively sample the currents in response to the modified pulse width.

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