ST Motor

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ST Motor [Copy link]

Test phase voltage and phase current waveforms 1. Ia and Ua waveforms when the motor starts (blue is current and yellow is voltage) 2. Ia and Ua waveforms when the motor is running steadily (blue is current and yellow is voltage) 3. Ib and Ua waveforms when the motor starts (blue is current and yellow is voltage) Comparing Figure 1 and Figure 3, we can see the phase difference between Ia and Ib.