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:
Feb. 14, 2017
Filed:
Jul. 07, 2015
Mitsubishi Electric Corporation, Tokyo, JP;
Toru Miyake, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Provided are a power conversion device control device and a power conversion device control method, which are capable of reducing harm to other electronic devices and electromagnetic noise due to a switching frequency compared to the related art. Carrier change patterns of the respective phases, which are defined by parameters of an average switching frequency, a spectral diffusion index, and a repetition frequency, are generated so that at least the carrier change pattern of one phase differs from the carrier change patterns of the other phases. Semiconductor switching elements are controlled as instructed by duty command values while the switching frequency is switched for each phase separately, from one frequency to another sequentially based on carriers output in patterns that follow the generated carrier change patterns.