Title:
METHOD AND DEVICE FOR DETECTING RESONANT FREQUENCY OF LLC CONVERTER, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/238039
Kind Code:
A1
Abstract:
Provided in the present disclosure are a method and a device for detecting the resonant frequency of an LLC converter, and a storage medium. The method comprises: on the basis of the tolerance range of a resonance parameter of an LLC converter, determining a frequency scanning range; according to a preset frequency interval, successively scanning the frequencies in the frequency scanning range; when implementing each scan, acquiring an input voltage Vin and an output voltage Vo of the LLC converter under the current scanned frequency and, if the voltage difference V＝|Vin/N-Vo| is less than or equal to a preset threshold, then determining that the current scanned frequency is the resonant frequency of the LLC converter, and not continuing to scan the frequencies in the frequency scanning range, N being the converter turns ratio of the LLC converter.
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Inventors:
HU YONGHUI (CN)
LIN ZHAO (CN)
LIN ZHAO (CN)
Application Number:
PCT/CN2019/090694
Publication Date:
December 19, 2019
Filing Date:
June 11, 2019
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
H02M3/335
Foreign References:
| CN107257198A | 2017-10-17 | |||
| CN104076199A | 2014-10-01 | |||
| CN107085141A | 2017-08-22 | |||
| CN101931329A | 2010-12-29 | |||
| US20140036545A1 | 2014-02-06 |
Attorney, Agent or Firm:
TEE & HOWE INTELLECTUAL PROPERTY ATTORNEYS (CN)
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