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.

Date of Patent:
Nov. 14, 2017

Filed:

Jun. 15, 2015
Applicant:

Daikin Industries, Ltd., Osaka-shi, Osaka, JP;

Inventor:

Keisuke Ohta, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 5/458 (2006.01); H02M 1/14 (2006.01); H02M 1/12 (2006.01); H02P 27/08 (2006.01); H02P 6/14 (2016.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 5/458 (2013.01); H02M 1/12 (2013.01); H02M 1/14 (2013.01); H02P 6/14 (2013.01); H02P 27/08 (2013.01); H02M 2001/0012 (2013.01);
Abstract

A voltage period calculator obtains an oscillation period of a voltage. A power source impedance estimating unit obtains an estimated value of a power source impedance from the oscillation period, an inductance, and a capacitance. A gain setting unit sets a control gain using the estimated value, the inductance, the capacitance, and a desired attenuation coefficient command, and outputs the control gain. A multiplier obtains a product of the control gain and the voltage. A subtractor subtracts the product from a command value to obtain a voltage control ratio command.


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Ohta, Keisuke. (2017). Power conversion control device (U.S. Patent No. 9819281). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9819281

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