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Title:
METHOD FOR SEAMLESS SWITCHING BETWEEN DUAL-POWER POWER SUPPLY MODES OF LOCOMOTIVE
Document Type and Number:
WIPO Patent Application WO/2019/128416
Kind Code:
A1
Abstract:
Provided is a method for seamless switching between dual-power power supply modes of a locomotive. The method involves: regulating an output voltage of an initial power supply source and/or a switching power supply source, so that the output voltage of the initial power supply source is lower than that of the switching power supply source, and a voltage value of the initial power supply source is greater than working voltages of a first inverter and a second inverter to keep the first inverter and the second inverter in a normal running state; turning on the switching power supply source, so that the switching power supply source and the initial power supply source are simultaneously connected to a support capacitor, and the switching power supply source with a higher voltage value charges the support capacitor while the initial power supply source does not supply power any more; and after a voltage value of the support capacitor is stable, turning off the initial power supply source, so as to complete the switching between different power sources. In the present invention, a power source is changed by means of regulating a voltage difference between two different power supply sources, at least one power source charges a support capacitor at any moment, and a first inverter and a second inverter are kept in a running state, so that there is no need to power off when power is switched, thereby realizing seamless switching.

Inventors:
PENG, Hui (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
LI, Xueming (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
XU, Shaolong (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
GAN, Weiwei (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
JIANG, Fengbing (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
LIAO, Liang (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
LIANG, Xingyuan (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
LIU, Yi (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
YUAN, Jing (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
HUANG, Kai (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
TAN, Yongguang (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
HUANG, Mingming (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
Application Number:
CN2018/111363
Publication Date:
July 04, 2019
Filing Date:
October 23, 2018
Export Citation:
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Assignee:
ZHUZHOU CRRC TIMES ELECTRIC CO., LTD. (No.169, Shidai Road Shifeng Distric, Zhuzhou Hunan 1, 412001, CN)
International Classes:
B61C13/00; B60L9/00
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (7th Floor, Scitech PlaceNo.22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, 100004, CN)
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