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. 11, 2005
Filed:
Jan. 21, 2003
Applicants:
Kazushi Naito, Hitachinaka, JP;
Nobuaki Mizuguchi, Hitachinaka, JP;
Hiroyuki Ozawa, Hitachinaka, JP;
Inventors:
Kazushi Naito, Hitachinaka, JP;
Nobuaki Mizuguchi, Hitachinaka, JP;
Hiroyuki Ozawa, Hitachinaka, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7122 ;
U.S. Cl.
CPC ...
Abstract
An inverter module for an electric railcar includes an inverter composed of three 2 in 1 IGBTs, a breaker composed of semiconductor line breaker, and a dry filter capacitor, wherein one inverter corresponds to a single motor. The inverter is a snubberless inverter omitting a snubber capacitor, and a main circuit connecting the output of the inverter to the motor is a coaxial cable. The main circuit and the interior of the inverter is connected via a connector instead of a conventional terminal block.