Title:
PFC CIRCUIT, CONTROL METHOD FOR PFC CIRCUIT, MEDIUM AND HOUSEHOLD APPLIANCE
Document Type and Number:
WIPO Patent Application WO/2024/012187
Kind Code:
A1
Abstract:
A PFC circuit, a control method for the PFC circuit, a medium and a household appliance. The PFC circuit (30) comprises a first inductor (L1), a first switching transistor (Q1) and a second switching transistor (Q2). The first switching transistor (Q1) and the second switching transistor (Q2) are connected in parallel and then connected to the first inductor (L1). The control method comprises: when the PFC circuit is started, performing staggered control on the first switching transistor and the second switching transistor, and obtaining an inductor current (S10); respectively performing effectiveness detection on the first switching transistor and the second switching transistor according to the inductor current (S20); and determining the working mode of the PFC circuit according to the effectiveness detection result of the first switching transistor and the effectiveness detection result of the second switching transistor, so as to control the PFC circuit (S30).
Inventors:
LIU WENLONG (CN)
BI RAN (CN)
FENG JUNPU (CN)
ZHANG JIENAN (CN)
LONG TAN (CN)
ZHOU HONGMING (CN)
XU YUNSONG (CN)
LI JI (CN)
BI RAN (CN)
FENG JUNPU (CN)
ZHANG JIENAN (CN)
LONG TAN (CN)
ZHOU HONGMING (CN)
XU YUNSONG (CN)
LI JI (CN)
Application Number:
PCT/CN2023/102461
Publication Date:
January 18, 2024
Filing Date:
June 26, 2023
Export Citation:
Assignee:
FOSHAN SHUNDE MIDEA ELECTRIC SCIENCE AND TECH CO LTD (CN)
GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD (CN)
GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD (CN)
International Classes:
H02M7/219; H02M1/42
Foreign References:
| CN104811028A | 2015-07-29 | |||
| CN105939152A | 2016-09-14 | |||
| CN109525107A | 2019-03-26 | |||
| CN206759336U | 2017-12-15 | |||
| US20180076729A1 | 2018-03-15 |
Attorney, Agent or Firm:
BEIJING LISENG INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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