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METHOD AND SYSTEM FOR SWITCHING BETWEEN DIFFERENT TYPES OF OPERATION OF A SENSORLESS PERMANENT MAGNET BRUSHLESS MOTOR AT LOW OR ZERO SPEED TO DETERMINE ROTOR POSITION
METHOD AND SYSTEM FOR SWITCHING BETWEEN DIFFERENT TYPES OF OPERATION OF A SENSORLESS PERMANENT MAGNET BRUSHLESS MOTOR AT LOW OR ZERO SPEED TO DETERMINE ROTOR POSITION
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机译：用于以低速或零速确定转子位置的无传感器永磁无刷电动机的不同类型的操作切换的方法和系统
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摘要
The system and method disclose for the controlling of motor switching. The system includes a controller unit having a control signal generator, a memory device, a processing unit, a signal acquisition device, and an analog-to-digital converter. A power stage has a plurality of switches and receives a control signal from the control signal generator and a power signal from a power source. The power stage drives two windings of the set of three stator windings with a multi-state pulse and leaves one stator of the three stator windings undriven. The processing unit acquires a demodulated measured voltage on the undriven winding. The processing unit communicates with the power stage to change which two windings of the three stator windings are driven when the demodulated measured voltage surpasses a threshold.
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