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:
Jan. 07, 2025
Filed:
May. 09, 2023
Guangzhou Metro Design&research Institute Co.,ltd., Guangdong, CN;
Qingdao University, Shandong, CN;
Shan Lin, Guangdong, CN;
Tao Zhao, Shandong, CN;
Xingzhong Nong, Guangdong, CN;
Dijun Wang, Guangdong, CN;
Chunfang Wang, Shandong, CN;
Guangzhou Metro Design & Research Institute Co., Ltd., Guangdong, CN;
QINGDAO UNIVERSITY, Shandong, CN;
Abstract
The present invention discloses a direct current power supply system for urban rail transit cascaded direct-hanging stations, belonging to the field of power electronic technologies. The power supply system includes a 110 kV high-voltage power grid, a 35 kV medium-voltage power grid, a cascaded H-bridge medium-voltage direct-hanging converter, a 650V-800V common direct current bus, a standby power supply and direct current electric loads. The cascaded H-bridge medium-voltage direct-hanging converter is formed by 3n modules in cascade, and each module is formed by an H-bridge converter and an isolated DC/DC converter connected in series. The present invention can replace an alternating current load power supply system based on a power frequency transformer, improve the efficiency and power density of the load power supply system of a subway station, reduce the no-load loss and extra cost introduced by the power frequency transformer, and achieve the purposes of energy saving, emission reduction and cost saving.