Title:
MOTOR DRIVER AND MOTOR DRIVING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/092408
Kind Code:
A1
Abstract:
The present disclosure relates to a motor driver and a motor driving system. The motor driver comprises: a rectifying circuit, a direct current link circuit, and an inverter circuit. The rectifying circuit comprises a rectifier bridge, a first half bridge, a first switch, a second switch, a third switch, and an inductor; the inductor is connected between the c-phase of a three-phase electric power grid and the midpoint of the first half bridge; the first switch and the inductor are connected in parallel; the second switch is connected between the a-phase of the three-phase electric power grid and the midpoint of a first bridge arm of the rectifier bridge; and the third switch is connected between the b-phase of the three-phase electric power grid and the midpoint of a second bridge arm of the rectifier bridge. The direct current link circuit comprises a capacitor and a second half bridge; a first end and a second end of the capacitor are respectively connected to a positive output end and a negative output end of the rectifying circuit; a collector of a seventh switching device is connected to the first end of the capacitor; an emitter of the seventh switching device is connected to a collector of an eighth switching device; and an emitter of the eighth switching device is connected to the second end of the capacitor.
Inventors:
LIAO HUA (CN)
ZHANG JUN PING (CN)
ZHANG JUN PING (CN)
Application Number:
PCT/CN2022/128630
Publication Date:
May 10, 2024
Filing Date:
October 31, 2022
Export Citation:
Assignee:
SIEMENS AG (DE)
SIEMENS LTD CHINA (CN)
SIEMENS LTD CHINA (CN)
International Classes:
H02P27/06; H02M7/5387
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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