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The mathematical models of the surface-mounted permanent magnet synchronous machine (SPMSM) in both healthy and turn fault conditions are utilized to generate the current residual with the same voltage input. The features in the current residual are analyzed with the consideration of model accuracy. The 2nd harmonic in the positive rotating dq reference or the dc component in the negative rotating...
Most permanent magnet (PM) machines are driven by inverter with pulse-width-modulation (PWM) voltages. The resultant phase current contains high frequency (HF) components, based on which, a new technique to detect turn fault is proposed. The machine model at high frequency is established and the HF current components are analyzed. A bandpass filter is used to extract the selected sideband components,...
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