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Patent Searching and Data


Title:
POWER FACTOR CORRECTION CIRCUIT AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/232995
Kind Code:
A1
Abstract:
A power factor correction circuit and an air conditioner. The power factor correction circuit comprises: a power factor correction module (10), wherein an alternating-current input end of the power factor correction module (10) is connected to an alternating-current power source, and is used for rectifying the alternating-current power source into a direct-current output; a switch driving module connected to a driving input end of the power factor correction module (10) and used for outputting a switching signal to the power factor correction module (10); a control module (30) connected to the switch driving module and used for controlling the opening or closing of a driving output of the switch driving module; a Hall current sensor (40) arranged on an alternating-current input side of the power factor correction module (10); and a driving protection module (50) connected to the Hall current sensor (40) and the control module (30) and used for determining, according to a relationship between a sampled signal and a corresponding first safety threshold, whether to output a protection signal to the control module (30). By means of the solution, whether a rectifier is abnormal can be detected more directly, and when it is determined that the rectifier is abnormal, corresponding abnormal components can be determined under different working conditions.

Inventors:
BAO DIANSHENG (CN)
Application Number:
CN2019/117017
Publication Date:
November 26, 2020
Filing Date:
November 11, 2019
Export Citation:
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Assignee:
GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD (CN)
International Classes:
H02M1/42
Foreign References:
CN109980915A2019-07-05
CN110011530A2019-07-12
CN110011531A2019-07-12
CN209545434U2019-10-25
CN209545435U2019-10-25
CN110034671A2019-07-19
CN109980914A2019-07-05
CN106026720A2016-10-12
CN109525112A2019-03-26
CN106411117A2017-02-15
CN108288910A2018-07-17
US20120314456A12012-12-13
Attorney, Agent or Firm:
YOULINK INTELLECTUAL PROPERTY LAW FIRM (CN)
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