Methods and apparatus for dynamically reconfiguring a pulse...

Details Methods and apparatus for dynamically reconfiguring a pulse... Methods and apparatus for dynamically reconfiguring a pulse...

2005-06-07

2005-06-07

Duda, Rina (Department: 2837)

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

C318S434000, C318S254100, C318S599000, C318S811000

Reexamination Certificate

active

06903523

ABSTRACT:
An apparatus includes a driver circuit including electronic switches operable to deliver voltage and current to a polyphase motor; and a control circuit operable to provide driver control signals to the driver circuit to commutate the electronic switches, the control circuit (i) producing the driver control signals using a first pulse width modulation (PWM) mode when the polyphase motor produces a substantially non-zero acceleration torque; and (ii) producing the driver control signals using a second PWM mode when the polyphase motor produces a substantially zero acceleration torque.

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