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:
Sep. 10, 2013
Filed:
Nov. 18, 2008
Shinzo Tamai, Minato-ku, JP;
Yosuke Fujii, Minato-ku, JP;
Akinobu Ando, Minato-ku, JP;
Yasuhiko Hosokawa, Minato-ku, JP;
Shinzo Tamai, Minato-ku, JP;
Yosuke Fujii, Minato-ku, JP;
Akinobu Ando, Minato-ku, JP;
Yasuhiko Hosokawa, Minato-ku, JP;
Abstract
A synchronous-machine starting device includes an induction voltage operating unit calculating an induction voltage induced to an armature of a synchronous machine based on an estimated phase representing a position of a rotor, an estimated rotational speed of a rotor, an AC voltage signal, and an AC current signal, and outputting an induction voltage signal representing the calculated induction voltage, a selection unit selecting and outputting one of the induction voltage signal received from the induction voltage operating unit and the AC voltage signal received from the AC voltage detection unit, and a feedback operating unit outputting a speed signal representing the calculated estimated rotational speed based on calculated phase error to the induction voltage operating unit, and outputting a position signal representing the calculated estimated phase to the electric power conversion control unit and the induction voltage operating unit.