Fault-tolerant control method for short-circuit fault of power converter in switched reluctance motor
A technology of switched reluctance motors and power converters, which is applied in motor control, AC motor control, and control systems, and can solve problems such as increased system failure rates, poor fault-tolerant control effects, and easy program crashes
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[0081] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0082] figure 1 It is the relationship diagram of the phase inductance and the rotor position angle of the switched reluctance motor of the present invention. The torque output of the switched reluctance motor is closely related to the phase inductance and phase current, and the phase inductance changes periodically with the rotor position. When conduction is performed in the phase inductance rising region, the conduction phase provides positive torque for the switched reluctance motor system; when conduction is performed in the phase inductance decline region, the conduction phase provides negative torque for the switched reluctance motor system. Therefore, when a short-circuit fault occurs in the power converter in the switched reluctance motor system, the conduction interval of the fault phase is adjusted in combination with the characteristics of the pha...
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