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. 24, 2013
Filed:
Feb. 16, 2011
Masao Mabuchi, Kyoto, JP;
Mio Miyamoto, Kyoto, JP;
Naoki Maki, Kyoto, JP;
Kotaro Nakamura, Kyoto, JP;
Akiyuki Tsunaga, Kyoto, JP;
Masao Mabuchi, Kyoto, JP;
Mio Miyamoto, Kyoto, JP;
Naoki Maki, Kyoto, JP;
Kotaro Nakamura, Kyoto, JP;
Akiyuki Tsunaga, Kyoto, JP;
Omron Corporation, Kyoto, JP;
Abstract
A power conditioner of a photovoltaic system is configured operate at higher accuracy. A chopper circuit, a capacitor connected in parallel to the chopper circuit, and a control circuit that controls an ON/OFF status of switch elements in the chopper circuit to control charging and discharging of the capacitor are provided. The control circuit includes a measurement control section that measures an inter-end voltage of the capacitor and a control circuit section that performs a predetermined control operation from a measurement output of the measurement circuit section. The measurement circuit section includes a differential amplifier circuit that differentially amplifies the inter-end voltage of the capacitor. The circuit control section calibrates an in-phase component in the output of the differential amplifier circuit as an in-phase error and performs the control from the calibrated output from the differential amplifier circuit.