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. 27, 2016
Filed:
Nov. 16, 2012
Meidensha Corporation, Tokyo, JP;
MEIDENSHA CORPORATION, Tokyo, JP;
Abstract
The present invention provides a power conversion device in which an on-pulse bias voltage and a neutral-point bias voltage do not interfere with each other. A power conversion deviceof the present invention has a polarity judgment sectionthat judges a polarity of a neutral-point bias voltage Vcalculated by a neutral-point potential fluctuation suppression control sectionof a voltage command value control circuit, then on the basis of this polarity of the neutral-point bias voltage V, selects a polarity of an on-pulse bias voltage Vby an on-pulse control section. With this control, it is possible to prevent for the polarities of the neutral-point bias voltage Vand the on-pulse bias voltage Vfrom being different then prevent for the both bias voltages from interfering with each other.