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Frequency Domain Fault Characteristics:
The frequency responses of low-pass and high pass filters are shown in Figure 7. This response determines the level of detail and approximate decomposition of each order. The load torque and coil pitch in Figure 8 increase, the filter can be idealized to obtain an improved frequency decomposition.
Stator current frequency sideband component (Figure 8) caused by load torque oscillation in the current spectrum. A gain graph is established to study the amplitudes of these specific sidebands related to the load torque oscillation frequency
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IEEE/ICACT20230060 Slide.25
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