Abstract: A fault-tolerant control method for a position sensor of a switched reluctance motor, if the position sensor of the switched reluctance motor runs without a fault, detecting, in real time, four equal-interval or equal-angle continuous edge pulses of an output signal of the position sensor, the fourth edge pulse being the current edge pulse, and detecting time intervals (T1, T2, T3) between each two adjacent edge pulses sequentially, thereby calculating a time interval (T4) between the current edge pulse and a next edge pulse following the current edge pulse. If the position sensor of the switched reluctance motor fails, and the next edge pulse following the current edge pulse is lost, reconstructing the next edge pulse after the interval time (T4) of the current edge pulse of the output signal of the position sensor.

Abstract: A fault-tolerant control method for a position sensor of a switched reluctance motor, if the position sensor of the switched reluctance motor runs without a fault, detecting, in real time, four equal-interval or equal-angle continuous edge pulses of an output signal of the position sensor, the fourth edge pulse being the current edge pulse, and detecting time intervals (T1, T2, T3) between each two adjacent edge pulses sequentially, thereby calculating a time interval (T4) between the current edge pulse and a next edge pulse following the current edge pulse. If the position sensor of the switched reluctance motor fails, and the next edge pulse following the current edge pulse is lost, reconstructing the next edge pulse after the interval time (T4) of the current edge pulse of the output signal of the position sensor.

Abstract: A fault diagnosing method based on standard deviation of detail coefficients for the power converter of a switched reluctance motor, operates by detecting the transient value of phase current in the power converter of a switched reluctance motor, the standard deviation of detail coefficients a is calculated and is taken as a fault characteristic quantity, and then whether there is a short circuit fault in the main switch of the power converter of the switched reluctance motor is diagnosed with a curve of standard deviation of detail coefficients a of phase current in the power converter of the switched reluctance motor in the entire range of rotation speed or in the entire range of torque. The method is applicable to the power converter of a switched reluctance motor with any topological structure, with any number of phases, can diagnose short circuit faults accurately, and has a great value in engineering application.