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:
Aug. 02, 2022
Filed:
Jan. 27, 2020
Central Japan Railway Company, Nagoya, JP;
Toshiba Infrastructure Systems & Solutions Corporation, Kawasaki, JP;
Ken Kunomura, Nagoya, JP;
Toshimasa Shimizu, Nagoya, JP;
Kenji Sato, Nagoya, JP;
Hirokazu Kato, Nagoya, JP;
Kazuaki Yuuki, Tokorozawa, JP;
Toshiyuki Uchida, Kiyose, JP;
Masatsugu Morita, Tokyo, JP;
Hiroki Miyajima, Saitama, JP;
Yukitaka Monden, Kawasaki, JP;
Central Japan Railway Company, Nagoya, JP;
Toshiba Infrastructure Systems & Solutions Corporation, Kawasaki, JP;
Abstract
A controller of an embodiment includes a limiter receiving an active current command initial value, limiting a maximum value of the active current command initial value with a predetermined value, and outputting a first value; a circuit to calculate a reactive current command initial value; a calculator to calculate a reactive current command adjustment value; a unit receiving the first value as an input, and calculating a reactive current upper limit value such that a composite value of the first value and the reactive current upper limit value is equal to or smaller than an input current maximum value; and a limiter to output the reactive current command adjustment value or the reactive current upper limit value, whichever is smaller. The predetermined value is a value to set the reactive current upper limit value to a value larger than zero and smaller than the input current maximum value.