Title:
FAULT CURRENT-SUPPRESSING DAMPER TOPOLOGY CIRCUIT AND CONTROL METHOD THEREOF AND CONVERTER
Document Type and Number:
WIPO Patent Application WO/2017/000925
Kind Code:
A1
Abstract:
A fault current-suppressing damper topology circuit and a control method thereof, and a converter. An anode of a separate diode is connected with a positive electrode of a second switch module, a cathode of the separate diode is connected with one end of an energy storage capacitor, and the other end of the energy storage capacitor is connected with a negative electrode of a first switch module; a damping resistor is connected in parallel with a lightning arrester and then with the first switch module; a bypass switch is connected in parallel between a terminal x1 and a terminal x2 of the damper topology circuit; a power supply system acquires energy from the energy storage capacitor and supplies power to a control system; the control system controls the operating state of the damper topology circuit by controlling the bypass switch, the first switch module and the second switch module. The fault current-suppressing damper topology circuit is applied to voltage-source converters. In case of a direct current fault, stress resulting from fault currents is reduced by use of the damping resistor, thereby avoiding damages to devices and achieving self-power supply, modularization and independent control. The fault current-suppressing damper topology circuit can be flexibly applied to various types of voltage-source converters and also has outstanding economic efficiency and technicality.
Inventors:
XIE YEYUAN (CN)
ZHU MINGLIAN (CN)
JIANG TIANGUI (CN)
BAI CHUANJUN (CN)
LI MIN (CN)
ZHU MINGLIAN (CN)
JIANG TIANGUI (CN)
BAI CHUANJUN (CN)
LI MIN (CN)
Application Number:
PCT/CN2016/089946
Publication Date:
January 05, 2017
Filing Date:
July 13, 2016
Export Citation:
Assignee:
NR ELECTRIC CO LTD (CN)
NR ENGINEERING CO LTD (CN)
NR ENGINEERING CO LTD (CN)
International Classes:
H02M1/32
Foreign References:
| CN102801295A | 2012-11-28 | |||
| CN102118019A | 2011-07-06 | |||
| CN102611096A | 2012-07-25 | |||
| CN104052026A | 2014-09-17 | |||
| US6650523B1 | 2003-11-18 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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