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:
Nov. 06, 2012
Filed:
Mar. 02, 2009
Hirotaka Saruwatari, Osaka, JP;
Takeshi Kokura, Osaka, JP;
Keisuke Shimatani, Osaka, JP;
Keiichi Yoshisaka, Osaka, JP;
Hirotaka Saruwatari, Osaka, JP;
Takeshi Kokura, Osaka, JP;
Keisuke Shimatani, Osaka, JP;
Keiichi Yoshisaka, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
The invention relates to a power conversion apparatus including a converter circuit and an inverter circuit. The invention allows more precise output control of the inverter circuit than a power conversion apparatus in which the output control is performed based on a current value only, thereby improving operation efficiency. A current sensor detects input current of the inverter circuit, and a voltage sensor detects input voltage of the inverter circuit. A power value calculator section in an inverter microcomputer obtains a power value based on the input current and the input voltage. The inverter microcomputer and the control microcomputer perform droop control of reducing the output of the inverter circuit to make the power value smaller than a predetermined power value.