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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.:

US 11114970 B1

PDFFull Text
Date of Patent:
Sep. 07, 2021

Filed:

Jul. 19, 2017

Motor driver, heat pump system and refrigeration and air conditioning equipment using motor driver

Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Kazunori Hatakeyama, Tokyo, JP;

Keisuke Uemura, Tokyo, JP;

Yosuke Shinomoto, Tokyo, JP;

Koichi Arisawa, Tokyo, JP;

Assignee:

Mitsubishi Electric Corporation, Tokyo, JP;

Attorney:

Posz Law Group, PLC

Primary Examiner:

Cortez M Cook

Int. Cl.
CPC ...
H02P 6/06 (2006.01); H02P 27/08 (2006.01);
U.S. Cl.
CPC ...
H02P 27/085 (2013.01);
Abstract

A motor driver includes an inverter used for driving a motor and configured to apply an alternating-current voltage to the motor. The inverter drives, during start operation, a switching element of the inverter with a first PWM signal that is PWM modulated with a carrier frequency that is a first integer multiple of a frequency of the alternating-current voltage, and thereafter drives the switching element with a second PWM signal that is PWM modulated with a carrier frequency that is a second integer multiple of the frequency of the alternating-current voltage. The second integer is smaller than the first integer.

Find Patent Forward Citations

Hatakeyama, Kazunori. (2021). Motor driver, heat pump system and refrigeration and air conditioning equipment using motor driver (U.S. Patent No. 11114970). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11114970

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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