Title:
HOLD-UP TIME CIRCUIT FOR LLC CONVERTER
Document Type and Number:
WIPO Patent Application WO/2023/065230
Kind Code:
A1
Abstract:
A power converter comprises switching elements coupled in series across a voltage input, a resonant circuit, an output circuit, and a controller. The output circuit comprises one or more windings coupleable to a winding of the resonant circuit, a plurality of switching devices coupled to the one or more windings, and a switch assembly coupled to the one or more windings. The plurality of switching devices is configured to supply an output voltage in response to a current flowing through at least one switching device of the plurality of switching devices and through at least one of the one or more windings. The controller is configured to control the switch assembly into a conducting state to cause a current flowing through the output circuit to flow through the one or more windings without flowing through the plurality of switching devices.
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Inventors:
XU GUANGWEI (CN)
ZOU LONGFEI (CN)
HU MENGDIE (CN)
ZOU LONGFEI (CN)
HU MENGDIE (CN)
Application Number:
PCT/CN2021/125358
Publication Date:
April 27, 2023
Filing Date:
October 21, 2021
Export Citation:
Assignee:
AES GLOBAL HOLDINGS PTE LTD (SG)
XU GUANGWEI (CN)
XU GUANGWEI (CN)
International Classes:
H02M3/335; H02M1/00; H02M3/00
Domestic Patent References:
| WO2017049179A1 | 2017-03-23 |
Other References:
SUN WENJIN ET AL: "Modified LLC resonant converter with secondary paralleled bidirectional switch for applications with hold-up time requirement", IET POWER ELECTRONICS, IET, UK, vol. 10, no. 3, 10 March 2017 (2017-03-10), pages 398 - 404, XP006060202, ISSN: 1755-4535, DOI: 10.1049/IET-PEL.2015.0570
CHO IN-HO ET AL: "A Half-Bridge LLC Resonant Converter Adopting Boost PWM Control Scheme for Hold-Up State Operation", IEEE TRANSACTIONS ON POWER ELECTRONICS, INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, USA, vol. 29, no. 2, 1 February 2014 (2014-02-01), pages 841 - 850, XP011524650, ISSN: 0885-8993, [retrieved on 20130820], DOI: 10.1109/TPEL.2013.2257863
WANG HONGLIANG ET AL: "An LLC Converter Family With Auxiliary Switch for Hold-Up Mode Operation", IEEE TRANSACTIONS ON POWER ELECTRONICS, INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, USA, vol. 32, no. 6, 1 June 2017 (2017-06-01), pages 4291 - 4306, XP011640911, ISSN: 0885-8993, [retrieved on 20170210], DOI: 10.1109/TPEL.2016.2604368
CHO IN-HO ET AL: "A Half-Bridge LLC Resonant Converter Adopting Boost PWM Control Scheme for Hold-Up State Operation", IEEE TRANSACTIONS ON POWER ELECTRONICS, INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, USA, vol. 29, no. 2, 1 February 2014 (2014-02-01), pages 841 - 850, XP011524650, ISSN: 0885-8993, [retrieved on 20130820], DOI: 10.1109/TPEL.2013.2257863
WANG HONGLIANG ET AL: "An LLC Converter Family With Auxiliary Switch for Hold-Up Mode Operation", IEEE TRANSACTIONS ON POWER ELECTRONICS, INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, USA, vol. 32, no. 6, 1 June 2017 (2017-06-01), pages 4291 - 4306, XP011640911, ISSN: 0885-8993, [retrieved on 20170210], DOI: 10.1109/TPEL.2016.2604368
Attorney, Agent or Firm:
IP MARCH (CN)
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