Reluctance-Controlled Planar Transformer With Arbitrary Noninteger Turns Ratio for High-Current LLC DCX
发布时间：2026-07-07
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- 发布时间：
- 2026-07-07
- 论文名称：
- Reluctance-Controlled Planar Transformer With Arbitrary Noninteger Turns Ratio for High-Current LLC DCX
- 发表刊物：
- IEEE Transactions on Power Electronics
- 摘要：
- Owning to its high efficiency characteristic, resonant converter is designed to operate at resonant frequency as a dc transformer (DCX), where the transformer turns ratio is designed based on the nominal input and output bus voltages. However, the limited number of printed circuit board layers and turns makes it difficult for planar transformer to achieve noninteger turns ratio. The common solutions include fractional-turn transformer and matrix transformer, but neither method can achieve noninteger turns ratio without increasing the number of turns. This letter proposes a reluctance-controlled arbitrary noninteger turns ratio planar transformer structure. The proposed structure splits the center column of the magnetic core, and primary windings are wound on two columns and connected in series. By adjusting the reluctance ratio of the two columns, the proposed method achieves arbitrary noninteger turns ratio with fewer turns. Finally, a 30–12 V 120 W LLC DCX converter is built to verify the feasibility of the proposed method. Compared with the traditional solution, winding loss was reduced by 1.164 W under full-load condition, and the peak efficiency and full-load efficiency were increased by 0.43% and 1.08%, respectively.
- 第一作者：
- 杨东醒
- 是否译文：
- 否