Title:
CONTROL METHOD AND CONTROL APPARATUS FOR LLC RESONANT CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2023/041021
Kind Code:
A1
Abstract:
Provided in the present application are a control method and control apparatus for an LLC resonant circuit. The LLC resonant circuit comprises a full-bridge inverter circuit. The method comprises: when an input voltage of an LLC resonant circuit is greater than a set threshold value and the LLC resonant circuit is in a full-bridge mode, controlling time points corresponding to rising edges of driving voltages of some switch tubes to remain unchanged, and controlling time points corresponding to falling edges thereof to change according to a first rule, such that the LLC resonant circuit is converted from the full-bridge mode into a half-bridge mode; and when the input voltage is less than or equal to the set threshold value and the LLC resonant circuit is in the half-bridge mode, controlling the time points corresponding to the rising edges of the driving voltages of some switch tubes to remain unchanged, and controlling the time points corresponding to the falling edges thereof to change according to a second rule, such that the LLC resonant circuit is converted from the half-bridge mode into the full-bridge mode. The method guarantees the good reliability of a circuit.
Inventors:
WANG CHENYANG (CN)
WANG ZHISHEN (CN)
WANG ZHISHEN (CN)
Application Number:
PCT/CN2022/119253
Publication Date:
March 23, 2023
Filing Date:
September 16, 2022
Export Citation:
Assignee:
MORNSUN GUANGZHOU SCI & TECH (CN)
International Classes:
H02M3/335; H02M1/44
Foreign References:
| CN110649812A | 2020-01-03 | |||
| CN103208920A | 2013-07-17 | |||
| CN106411139A | 2017-02-15 | |||
| CN110768535A | 2020-02-07 |
Attorney, Agent or Firm:
GUANGZHOU ZHIYOU PATENT & TRADEMARK AGENCY CO., LTD. (CN)
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