Patent ID: 11870275
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 4:
5. The apparatus according to claim 1, wherein the phase-lock control module comprises a phase detector and a voltage-controlled oscillator, wherein an output end of the voltage-controlled oscillator is connected to both a first input end of the phase detector and the input end of the excitation module, a second input end of the phase detector is connected to the output end of the signal collection module, and an output end of the phase detector is connected to both an input end of the voltage-controlled oscillator and the input end of the determining module;
the phase detector is configured to: generate a fifth signal based on the difference between the phase of the first signal and the phase of the third signal, and output the fifth signal to the voltage-controlled oscillator and the determining module; and
the voltage-controlled oscillator is configured to generate the frequency-adjusted first signal based on the fifth signal.