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:
Jun. 17, 2014
Filed:
Jul. 23, 2009
Tomoyuki Kawakami, Tokyo, JP;
Akihiko Iwata, Tokyo, JP;
Tatsuya Okuda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
In a power conversion device which performs DC/DC conversion, an inverter circuit (), which is formed of one or more single-phase inverters () and () connected in series to each other, is connected in series to a DC power supply () in its subsequent stage. In further subsequent stage, a smoothing capacitor () connected to the inverter circuit () via a rectifier diode (), and a shorting switch () which bypasses the smoothing capacitor () are provided. The shorting switch () is switched ON to charge capacitors () and () included in the single-phase inverter () and (), respectively, whereas the shorting switch () is switched OFF to discharge the capacitors () and (), whereby the voltage of the smoothing capacitor () is controlled.