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Detection Of A Wire-Break Fault During The Operation Of A Brushless D.C. Motor
Detection Of A Wire-Break Fault During The Operation Of A Brushless D.C. Motor
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机译:无刷直流电动机运行过程中的断线故障检测
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摘要
A method recognizes a wire-break fault during operation of a brushless DC motor. A switch-on delay duration of a transition of an electrical phase potential that rests on the stator winding phase from a switch-off potential to a switch-on potential and a switch-off delay duration of the transition of the phase potential from the switch-on potential to the switch-off potential are detected for a stator winding phase of the stator winding of the motor during each pulse width modulation cycle period. Moreover, a lower deviation limit is defined for a deviation of detected switch-off delay durations from detected switch-on delay durations. A wire-break fault is deduced if the deviations of the detected switch-off delay durations from the detected switch-on delay durations fall below the lower deviation limit.
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