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:
Apr. 29, 2014
Filed:
Dec. 16, 2009
Gil-dong Kim, Gyeonggi-do, KR;
Han-min Lee, Seoul, KR;
Chang-mu Lee, Gyeonggi-do, KR;
Sung-kyou Choi, Seoul, KR;
Gil-Dong Kim, Gyeonggi-do, KR;
Han-Min Lee, Seoul, KR;
Chang-Mu Lee, Gyeonggi-do, KR;
Sung-Kyou Choi, Seoul, KR;
Korea Railroad Research Institute, Gyeonggi-do, KR;
Abstract
A regenerative electric power storage system installed onboard a DC electric rail car comprises: a filter unit which removes high frequency components from the DC power supplied through the catenary of a pantograph; a storage unit for storing power; a bidirectional DC/DC converter which is electrically connected between the filter unit and the storage unit; a DC/DC filter unit to remove high frequency noise; a voltage detection unit and a control unit which controls the switching of the bidirectional DC/DC converter. Instability is presented in the remaining systems of the electric rail car.