Title:
WIDE-RANGE BIDIRECTIONAL SOFT SWITCH DC CONVERSION CIRCUIT AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/080245
Kind Code:
A1
Abstract:
A wide-range bidirectional soft switch direct current (DC) conversion circuit and a control method therefor. The circuit comprises at least one first conversion sub-circuit, at least one second conversion sub-circuit and at least one controller (400); the first conversion sub-circuit comprises a first series connection resonance inversion circuit (210), a first high frequency isolation transformer (TRA), a common bridge arm (330) and a first bridge arm (310); and the second conversion sub-circuit comprises a second series connection inverter circuit (220), a second high frequency isolation transformer (TRB) and a second bridge arm (320). With the described method, a switch sequence is controlled in a forward direction or reverse direction according to voltage which the conversion circuit needs to be output and whether the conversion circuit needs to work in a forward direction or a reverse direction, and controls the connection of the common bridge arm (330) so as to make the first conversion sub-circuit and the second conversion sub-circuit output voltage independently or jointly in the forward direction or the reverse direction, thereby realizing wide-range bidirectional conversion. The circuit is simple in structure, easy to control and high in price-performance ratio, and may meet the needs of a wide range work.
Inventors:
LI LUNQUAN (CN)
XIE LIHAI (CN)
ZHENG CHEXIAO (CN)
XIE LIHAI (CN)
ZHENG CHEXIAO (CN)
Application Number:
PCT/CN2017/113027
Publication Date:
May 02, 2019
Filing Date:
November 27, 2017
Export Citation:
Assignee:
SHENZHEN BOYN ELECTRIC CO LTD (CN)
International Classes:
H02M3/335
Domestic Patent References:
| WO2016190031A1 | 2016-12-01 |
Foreign References:
| CN207368884U | 2018-05-15 | |||
| CN104811047A | 2015-07-29 | |||
| CN104158243A | 2014-11-19 | |||
| CN106936320A | 2017-07-07 | |||
| CN106169872A | 2016-11-30 | |||
| US8929109B2 | 2015-01-06 |
Attorney, Agent or Firm:
CHINA TRUER IP (CN)
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