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Title:
AIR CONDITIONER, AND METHOD FOR CONTROLLING PFC CIRCUIT OF AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/005594
Kind Code:
A1
Abstract:
Disclosed is an air conditioner, comprising: a rectification circuit, an input end of which is connected to an alternating-current power source; a PFC circuit, an input end of which is connected to an output end of the rectification circuit; an alternating-current voltage sampling circuit, which is connected to an input end of the rectification circuit, and is configured to measure an alternating-current power source sampling voltage; an alternating-current sampling circuit, which is connected to an output end of the PFC circuit, and is configured to measure an alternating-current power source sampling current; a direct-current bus voltage sampling circuit, which is connected to the output end of the PFC circuit, and is configured to collect a direct-current bus sampling voltage; and a controller, which is configured to determine an instruction current value on the basis of the alternating-current power source sampling voltage, the alternating-current power source sampling current and the direct-current bus sampling voltage, to control, if the instruction current value is less than or equal to a preset current value, the PFC circuit to operate at a preset initial duty ratio, and to control, within a preset duration, a driving signal duty ratio of the PFC circuit to be increased from the preset initial duty ratio to a target duty ratio.

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Inventors:
GAO SIYUN (CN)
MU ZONGE (CN)
Application Number:
PCT/CN2022/103191
Publication Date:
February 02, 2023
Filing Date:
June 30, 2022
Export Citation:
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Assignee:
HISENSE AIR CONDITIONING CO LTD (CN)
International Classes:
H02H7/125; H02M1/36; H02M1/32; H02M1/42; H02M7/217
Foreign References:
CN113612378A2021-11-05
CN113162395A2021-07-23
CN108075633A2018-05-25
CN105305803A2016-02-03
Attorney, Agent or Firm:
BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (CN)
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