团队论文“A State Plane Analysis based Feedforward Frequency Control Method for LLC Converter With Limited Current Stress”被IEEE Transactions on Industrial Electronics期刊录用（中科院一区TOP期刊）。其中学生张琦是该论文的第一作者。论文摘要如下：

    Abstract: The LLC resonant converter features high power density and efficiency, but its dynamic response is restricted by its underdamped resonant tank and inherent nonlinearity. Conventional nonlinear control methods suffer from issues such as delays, high complexity, lookup table overhead, large current stress or degraded soft-switching performance. This paper proposes an online calculation of the steady-state switching frequency for both buck and boost modes based on state plane analysis (SPA), as well as a minimum switching frequency to limit the peak resonant current. By integrating these two calculations, a feedforward frequency control strategy with limited current stress is developed. Experimental results demonstrate that the proposed strategy effectively reduces settling time and output voltage overshoot. The settling time is shortened by up to 48.16 ms, and the voltage overshoot is reduced by up to 21.6 V. Meanwhile, the resonant inductor current overshoot is suppressed by up to 29.9 A, and zero voltage switching (ZVS) during transients is guaranteed. Accordingly, both the dynamic performance and operational reliability of the converter are improved.