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:
Dec. 30, 2014
Filed:
May. 31, 2011
Daijiro Araki, Hitachinaka, JP;
Motomi Shimada, Mito, JP;
Shuichi Tachihara, Hitachinaka, JP;
Akira Horie, Tokyo, JP;
Masahiro Nagasu, Hitachinaka, JP;
Daijiro Araki, Hitachinaka, JP;
Motomi Shimada, Mito, JP;
Shuichi Tachihara, Hitachinaka, JP;
Akira Horie, Tokyo, JP;
Masahiro Nagasu, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A control device for a railway vehicle controls an inverter device based on a direct-current link voltage Vfc between the opposite terminals of a filter capacitor. A direct-current voltage applied to the inverter device during regeneration is the sum of a voltage Vb of power storage equipment and an overhead wire voltage Vs, so that only detecting the direct-current link voltage Vfc is not enough to separate the voltage Vb of the power storage equipment and the overhead wire voltage Vs from each other. The power storage equipment can be connected in series with the inverter device, and a voltage sensor that detects the overhead wire voltage Vs is provided between a current collector device and a grounding point. The power storage equipment is controlled based on the detection result from the voltage sensor.