Title:
ELECTRIC LOCOMOTIVE AND TRACTION CIRCUIT THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/109456
Kind Code:
A1
Abstract:
A traction circuit of an electric locomotive. The traction circuit comprises: a traction transformer (10); first and second storage batteries (20; 30); a storage battery charger (40), which charges the first and second storage batteries (20; 30) when in a charging mode, and which inverts the output current of the second storage battery (30) in order to supply power to a constant-voltage constant-frequency load when in a storage battery mode; a first power supply circuit main body (50), which converts the electric energy of an overhead contact system in order to supply power to a first traction electric motor and a variable-voltage variable-frequency load when in an overhead contact system power supply mode, and which converts the electric energy of the first storage battery (20) in order to supply power to the first traction electric motor and the variable-voltage variable-frequency load when in the storage battery mode; and a second power supply circuit main body (60), which converts the electric energy of the overhead contact system in order to supply power to a second traction electric motor and the constant-voltage constant-frequency load when in the overhead contact system power supply mode, and which converts the electric energy of the second storage battery (30) in order to supply power to the second traction electric motor when in the storage battery mode. Further disclosed is an electric locomotive provided with the traction circuit. The present application facilitates a reduction in costs, a guarantee of the reliability of the circuit, and an increase in the energy conversion utilization rate.
Inventors:
SUO JIANGUO (CN)
KANG MINGMING (CN)
ZOU HUANQING (CN)
LEI XIN (CN)
ZHAO YULING (CN)
JIA YANXIN (CN)
KANG MINGMING (CN)
ZOU HUANQING (CN)
LEI XIN (CN)
ZHAO YULING (CN)
JIA YANXIN (CN)
Application Number:
PCT/CN2020/089921
Publication Date:
June 10, 2021
Filing Date:
May 13, 2020
Export Citation:
Assignee:
CRRC ZHUZHOU LOCOMOTIVE CO LTD (CN)
International Classes:
B61C3/02
Domestic Patent References:
| WO2019166151A1 | 2019-09-06 |
Foreign References:
| CN110949416A | 2020-04-03 | |||
| CN107128183A | 2017-09-05 | |||
| CN202115328U | 2012-01-18 | |||
| CN203005126U | 2013-06-19 | |||
| CN207328441U | 2018-05-08 | |||
| EP3429059A1 | 2019-01-16 | |||
| CN201901014U | 2011-07-20 | |||
| CN102358197A | 2012-02-22 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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