发明申请
US20160134207A1 SYNCHRONIZED REAPPLICATION OF POWER FOR DRIVING AN ELECTRIC MOTOR 有权
用于驱动电动机的同步重新启动电源

SYNCHRONIZED REAPPLICATION OF POWER FOR DRIVING AN ELECTRIC MOTOR
摘要:
One embodiment describes a method that includes, when a motor is disconnected from a power source: starting, using a control circuitry, a counter at a first voltage zero-crossing by either a source voltage or a back electromotive force generated by the motor; stopping, using the control circuitry, the counter at a next subsequent second voltage zero-crossing by either the source voltage or the back electromotive force; monitoring, using the control circuitry, a trend in counter values; and instructing, using the control circuitry, one or more switching devices to reconnect the power source to the motor after a local minimum in the counter value trend such that the source voltage is leading the back electromotive force.
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