The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 07, 2017
Filed:
Jun. 09, 2014
Crrc Qingdao Sifang Rolling Stock Research Institute Co. Ltd., Qingdao, CN;
Dongjun Yang, Qingdao, CN;
Bo Li, Qingdao, CN;
Junlei Wei, Qingdao, CN;
Bo Zhang, Qingdao, CN;
Zhaoping Li, Qingdao, CN;
Xiaoming Zhang, Qingdao, CN;
Zheng Xie, Qingdao, CN;
Yang Zhou, Qingdao, CN;
Lijun Zhang, Qingdao, CN;
Yanfang Zhang, Qingdao, CN;
Abstract
A system and a method for parallel power supply control for auxiliary converters of a motor train unit in the presence of interconnecting lines. The system comprises multiple three-phase inverter modules. The multiple three-phase inverter modules are in parallel connection with each other. Any two-phase circuit of a three-phase inverter module is separately in parallel connection with a corresponding two-phase circuit of a three-phase inverter module adjacent to the three-phase inverter module by using a connecting line module. The connecting line module is connected to a control system. The three-phase inverter modules are also connected to the control system. The three-phase lines of the three-phase inverter modules are all provided with switches. Less interconnecting lines are used, and any two phases of the three-phase inverter modules are separately in parallel connection, and therefore, stable power supply is achieved by balancing currents of any two phases of the three-phase circuits, and the system reliability is improved.