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. 19, 2018
Filed:
Aug. 05, 2015
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
A power converter including a compressor as a load includes a compensation current output () allowing compensation current (Ic), which compensates for leakage current (Ia), to flow. A controller () receives a detection signal from a rotational speed sensor () which senses the rotational speed of the compressor (CM). When the rotational speed has increased to a set rotational speed at which the leakage current (Ia) is lower than or equal to its limiting value (Lmax) (e.g., the limiting value specified under the Electrical Appliances and Materials Safety Act or by the IEC) in a state where the compensation current output () is off, the compensation current output () is switched from an on state to an off state. This may reduce the leakage current from the compressor with low power loss.