An improved two stage structure with partial power regulation concept is proposed in this paper. The partial input power is regulated by a pre-regulator, while the full input power is transferred by a high frequency and high efficiency LCLC resonant converter. It serves as a second stage and operates as a DC transformer (DCX) to boost the input voltage and provide galvanic isolation. The proposed architecture facilitates reduced secondary device ratings of the active clamp flyback (ACF) converter. A 24-32V input, 432V, 432W output isolated dc-dc converter for photovoltaic applications is built to verify the effectiveness of the proposed circuit structure. The peak efficiency of 96% is achieved with 278W/inch3.
|Title of host publication||Proceedings of IEEE 9th International Power Electronics and Motion Control Conference|
|Publication date||29 Nov 2020|
|Publication status||Published - 29 Nov 2020|
|Event||9th IEEE International Power Electronics and Motion Control Conference - Nanjing, China|
Duration: 29 Nov 2020 → 2 Dec 2020
|Conference||9th IEEE International Power Electronics and Motion Control Conference|
|Period||29/11/2020 → 02/12/2020|
|Series||2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia|
Bibliographical notePublisher Copyright:
© 2020 IEEE.
- High frequency
- High power density
- LCLC resonant converter
- Partial power regulation
- Two stage structure