Title:
TRAIN POWER SUPPLY SYSTEM, TRAIN POWER SUPPLY METHOD, AND TRAIN
Document Type and Number:
WIPO Patent Application WO/2024/050981
Kind Code:
A1
Abstract:
A train power supply system, a train power supply method, and a train. The power supply system comprises a plurality of direct-current auxiliary converters, a first direct-current bus, and a rectifying load which are connected in sequence; the rectifying load comprises a variable-frequency air conditioner, a variable-frequency motor, and direct-current loads; the plurality of direct-current auxiliary converters are used for decreasing the voltage of a high-voltage direct current, and thus outputting a low-voltage direct current to the first direct-current bus; the first direct-current bus is used for transmitting the low-voltage direct current to the rectifying load; the power supply system does not comprise an alternating-current bus, so that the problems of reactive power transmission and frequency stability necessarily associated with an alternating-current system, and the alternating-current voltage distortion problem when a rectifying load is connected would not occur; the rectifying load is used for converting the low-voltage direct current into an alternating current so as to drive the rectifying load to work. The rectifying load can be driven to work by directly inputting a direct current to the rectifying load, and the rectifying load does not need to rectify an alternating current into a direct current, so that the electric energy loss and the capacity requirement are reduced, and the power supply capacity and the electric energy quality are improved.
Inventors:
HA DALEI (CN)
CHEN TIANYU (CN)
TAO RAN (CN)
JIN WENBIN (CN)
CHEN TIANYU (CN)
TAO RAN (CN)
JIN WENBIN (CN)
Application Number:
PCT/CN2022/134168
Publication Date:
March 14, 2024
Filing Date:
November 24, 2022
Export Citation:
Assignee:
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD (CN)
International Classes:
B60L9/04; B60L1/00; B60M1/00; H02J1/10
Domestic Patent References:
| WO2018184868A2 | 2018-10-11 |
Foreign References:
| CN109301811A | 2019-02-01 | |||
| CN208835750U | 2019-05-07 | |||
| CN109367398A | 2019-02-22 | |||
| CN209063903U | 2019-07-05 | |||
| CN109217314A | 2019-01-15 | |||
| CN208923831U | 2019-05-31 | |||
| EP3032728A1 | 2016-06-15 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
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