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:
Oct. 25, 2022
Filed:
Feb. 28, 2019
Qingdao Haier Air-conditioning Electronic Co., Ltd, Qingdao, CN;
Haier Smart Home Co., Ltd, Qingdao, CN;
Anping Cong, Qingdao, CN;
Haizhu Shao, Qingdao, CN;
Yan Geng, Qingdao, CN;
Bin Shi, Qingdao, CN;
Bo Zhang, Qingdao, CN;
Xianghui Hu, Qingdao, CN;
QINGDAO HAIER AIR-CONDITIONING ELECTRONIC CO., LTD., Qingdao, CN;
HAIER SMART HOME CO, LTD., Qingdao, CN;
Abstract
Devices are provided for field weakening control of a compressor, including the compressor and a main circuit unit providing power for the compressor. The devices include a compressor rotational speed obtaining unit, and a control unit that compares the rotational speed ω of the compressor with a rotational speed threshold ωof the compressor, and controls the main circuit unit according to comparison results. When the rotational speed ω is less than ω, an output voltage of the main circuit unit is controlled at a fixed value. When the rotational speed ω is greater than or equal to ω, the compressor is controlled not to enter the field weakening control temporarily and the output voltage of the main circuit unit is controlled to rise, the compressor is controlled to enter the field weakening control when the output voltage of the main circuit unit cannot continue to rise.