Research on An Interleaved Phase-Shift Half-Bridge LLC Resonant Converter
- Resource Type
- Conference
- Authors
- Wang, Shu-Po; Hong, Min-Rui; Wu, Ping-Tsang; Chuang, Ching-Chun; Lu, Shiue-Der
- Source
- 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia) Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia), 2023 11th International Conference on. :1309-1316 May, 2023
- Subject
- Components, Circuits, Devices and Systems
Engineering Profession
Fields, Waves and Electromagnetics
General Topics for Engineers
Power, Energy and Industry Applications
Robotics and Control Systems
Transportation
Rectifiers
RLC circuits
Bridge circuits
Resonant converters
High-voltage techniques
DC-DC power converters
Zero voltage switching
Dual Full-Bridge Rectifier
Electric Vehicle
Interleaved Dual Phase-Shift Half Bridge LLC Resonant Circuit
- Language
- ISSN
- 2150-6086
This paper presents the analysis and simulation for a novel high-power density electric vehicle dc-dc converter. In this paper, a novel interleaved phase-shift half-bridge converter that mainly comprises two modules of a half-bridge converter and a double full-bridge rectifier is proposed. In the case of interfacing the high-voltage battery module, the isolated DC/DC converter is used to control the voltage at the input of the battery according to the battery terminal voltage and optimize the efficiency of the dc-dc converter in a wider range of operating voltage. It operates as a voltage doubler to achieve an output voltage of 450V for the charging of a high-voltage battery. The isolated dc-dc converter is operated as an LLC resonant converter owing to its advantages of simple control and soft switching operation. This converter not only has a wide range of zero-voltage-switching (ZVS) turn-on of power switches on the primary side of the transformer but also has a zero-current-switching (ZCS) turn-off of rectifier diode on the secondary side of the transformer. The proposed converter can achieve the output voltage range of 250-450V by adapting the phase shift between the two square waves. The two LLC half-bridge resonant converters are connected in parallel, and it’s operated at a fixed frequency and constant duty cycle. The simplified control strategy in the proposed converter can be achieved since the switching frequency of the converter operates at the resonant point. Finally, a 3.4kW design prototype with 400V input voltage and the 250-450V output voltage is simulated to verify the effectiveness of the phase-shift mode control method.