Title:
DISCHARGE DEVICE FOR DC BUS CAPACITOR AND METHOD THEREOF, ELECTRICAL DEVICE AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/082132
Kind Code:
A1
Abstract:
Embodiments of the present invention disclosea device for DC bus capacitor and method thereof, electrical device and storage medium. The device comprising: a resistor, connected in series with a DC bus capacitor of a converter; a braking IGBT, connected between a positive electrode (DCP) and a negative electrode (DCN) of the DC bus capacitor; a switch, which is respectively connected to the braking IGBT and the resistor; anda control unit, configured to turn on the braking IGBT when detecting that a power supply system of the converter is powered off, and control a state of the switch to conduct a discharging circuit of the DC bus capacitor, the discharging circuit comprising the resistor and the braking IGBT. When it is detected that the power supply system of the converter is powered off, the braking IGBT is reused to realize rapid discharge of the DC bus capacitor, thus reducing the discharge time.
Inventors:
CHEN XIAO LONG (CN)
HUANG QING LI (CN)
LI PENG CHENG (CN)
XU YU (CN)
LU YAN HUA (CN)
HUANG QING LI (CN)
LI PENG CHENG (CN)
XU YU (CN)
LU YAN HUA (CN)
Application Number:
PCT/CN2022/125911
Publication Date:
April 25, 2024
Filing Date:
October 18, 2022
Export Citation:
Assignee:
SIEMENS AG (DE)
SIEMENS LTD CHINA (CN)
SIEMENS LTD CHINA (CN)
International Classes:
H02J7/00; H02M1/32; H02M7/48
Foreign References:
| JP2006311682A | 2006-11-09 | |||
| CN102916472A | 2013-02-06 | |||
| CN110719018A | 2020-01-21 | |||
| CN114094806A | 2022-02-25 | |||
| CN208890635U | 2019-05-21 | |||
| CN215733537U | 2022-02-01 | |||
| JP2005237129A | 2005-09-02 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
Download PDF: