Patent ID: 11942834
Assignee: ZENG HSING INDUSTRIAL CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  D | IPC D  H

Claim 11:
12. The motor drive method of claim 9, wherein:
step B) is to generate the feedback determination signal by selecting one of a first feedback determination signal, a second feedback determination signal and a third feedback determination signal to serve as the feedback determination signal by comparing an average voltage of the feedback signal with a first feedback voltage level, a second feedback voltage level higher than the first feedback voltage level and a third feedback voltage level higher than the second feedback voltage level, wherein the first feedback determination signal is selected when the average voltage of the feedback signal is lower than the second feedback voltage level and is not lower than the first feedback voltage level, the second feedback determination signal is selected when the average voltage of the feedback signal is lower than the third feedback voltage level and is not lower than the second feedback voltage level, and the third feedback determination signal is selected when the average voltage of the feedback signal is not lower than the third feedback voltage level; and
step C) is to generate the modulated pulse signal that has the modulated duty cycle equal to a first duty cycle when receiving the first feedback determination signal from said feedback determination module, to generate the modulated pulse signal that has the modulated duty cycle equal to a second duty cycle higher than the first duty cycle when receiving the second feedback determination signal, and to generate the modulated pulse signal that has the modulated duty cycle equal to a third duty cycle higher than the second duty cycle when receiving the third feedback determination signal.