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Title:
EMERGENCY SELF-PROPELLED MOTOR VEHICLE TRACTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/113600
Kind Code:
A1
Abstract:
An emergency self-propelled motor vehicle traction system, comprising a four-quadrant rectifier (11), a traction inverter (12), a traction electric motor (13), a high-frequency isolated bidirectional DC/DC converter (14), a bidirectional DC/DC converter (15), and a power battery (16); when an external alternating-current grid is in a normal power supply state, the four-quadrant rectifier (11) converts the alternating current of the external alternating-current grid into a first direct current, and the traction inverter (12) converts the first direct-current power into a target alternating-current, so that the target alternating current supplies power to the traction electric motor (13); moreover, the first direct current is converted into a second direct current by the high-frequency isolated bidirectional DC/DC converter (14), and the second direct current supplies power to the power battery (16) via the bidirectional DC/DC converter (15); and when the external alternating-current power grid is in a power-off state, the power battery (16) supplies electrical energy to the traction inverter (12) via the bidirectional DC/DC converter (15) and the high-frequency isolated bidirectional DC/DC converter (14) so as to supply power to the traction electric motor (13). The above-mentioned emergency self-propelled motor vehicle traction system can maintain the running of the motor vehicle traction system when a contact network is powered off.

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Inventors:
XU MENG (CN)
JIN WENBIN (CN)
YANG SHU (CN)
QIU JUNJIE (CN)
HA DALEI (CN)
Application Number:
PCT/CN2018/120145
Publication Date:
June 11, 2020
Filing Date:
December 10, 2018
Export Citation:
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Assignee:
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD (CN)
International Classes:
B61C3/02; B60L53/20
Foreign References:
CN107878228A2018-04-06
CN107128183A2017-09-05
CN104670028A2015-06-03
CN106064564A2016-11-02
US20100096926A12010-04-22
CN105216637A2016-01-06
CN203496891U2014-03-26
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
Download PDF:
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