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. 15, 2015
Filed:
Jan. 18, 2012
Morimitsu Sekimoto, Shiga, JP;
Tomoisa Taniguchi, Shiga, JP;
Hiroshi Hibino, Shiga, JP;
Toshiyuki Maeda, Shiga, JP;
Morimitsu Sekimoto, Shiga, JP;
Tomoisa Taniguchi, Shiga, JP;
Hiroshi Hibino, Shiga, JP;
Toshiyuki Maeda, Shiga, JP;
DAIKIN INDUSTRIES, LTD., Osaka-Shi, JP;
Abstract
A DC link is provided, which includes a capacitor connected in parallel to an output of a converter circuit, and outputs a pulsating DC link voltage. An inverter circuit is provided, which converts an output of the DC link to AC by switching, and supplies the AC to a motor connected thereto. A controller is provided, which controls switching of the inverter circuit so that motor currents pulsate in synchronization with pulsation of a power-supply voltage. The controller controls the switching of the inverter circuit in accordance with a load of the motor or an operational state of the motor, and reduces pulsation amplitude of the motor currents.