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. 15, 2015
Filed:
Oct. 25, 2011
Mitsuyoshi Tsuchiya, Hitachinaka, JP;
Shigenori Inoue, Hitachi, JP;
Tetsuya Kato, Hitachiota, JP;
Tadashi Sodeyama, Hitachi, JP;
Mitsuyoshi Tsuchiya, Hitachinaka, JP;
Shigenori Inoue, Hitachi, JP;
Tetsuya Kato, Hitachiota, JP;
Tadashi Sodeyama, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A power conversion device includes: a plurality of cascade-connection type single-phase power converters; and a central control unit that controls the plurality of the single-phase power converters, wherein each of the plurality of single-phase power converters has a single-phase power converter control unit, and the central control unit and the plurality of the single-phase power converter control units are connected via a communication means having a daisy-chain configuration, wherein the single-phase power converter control unit transmits and receives a control signal via the communication means having the daisy-chain configuration, as well as a specific pattern signal, other than a control signal frame, which can be distinguished from the control signal frame, and determines a communication error due to not receiving the specific pattern signal at the single-phase power converter control unit, or an inconsistency between the received signal and the specific pattern signal.