Jianqiang Liu

TL;DR: In this paper, a voltage balance control strategy based on dual active bridge (DAB) dc/dc converters in a power electronic traction transformer (PETT) is proposed.

TL;DR: In this article, a modified gain model and corresponding design method for an LLC resonant converter are proposed to derive the gain model, two important factors (resonant factor and load factor) are considered and discussed in detail by combining time domain and frequency domain.

TL;DR: The proposed DCPET has fewer power semiconductor devices and high-frequency isolation transformers, which can improve the power density and reliability, and soft switching is guaranteed for all the switches, which is beneficial to increase switching frequency and improve power density.

TL;DR: An improved fault-tolerant method based on reverse-charging control of dual active bridge is proposed, which is suitable for PETT and other two-stage structure converters.

TL;DR: A no-load-point-based design method is put forward in this paper, which can rapidly obtain optimal parameters of an LLC resonant converter using the proposed LLC-LC type bidirectional control strategy.