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该论文提出了一种用于汽车48V/12V双向能量转换的多相加速电流控制方法。该方法解决了传统双向变换器在模式切换时电流瞬态时间长、导致大电压跌落的问题。
Hsinchu, Taiwan 3 Realtek Semiconductor, Hsinchu, Taiwan 1 2 48V and 12V power supplies play a critical role in electric vehicle (EV) power systems. In general, 48V transfers energy to 12V to supply lidar, camera, sensors, etc. Once the braking system is activated, the 12V regenerative energy will be returned to 48V for recycling. Thus, a bidirectional conversion of 48V-to-12V is required (top left of Fig. 20.4.1). However, in conventional designs, a bidirectional converter without a seamless control will cause a long current transient duration that results in a large voltage drop on the high voltage (HV) 48V battery system. Although numerous buck [1–4] and boost [5–7] converters have been designed, they do not focus on bidirectional energy transfer in automotive applications. For instance,
Tz-Wun Wang1, Si-Yi Li1, Sheng-Hsi Hung1, Tzu-Ying Wu1, Chi-Yu Chen1,
Po-Jui Chiu1, Ke-Horng Chen1, Kuo-Lin Zheng1,2, Ying-Hsi Lin3, Tsung-Yen Tsai3, Shian-Ru Lin3 National Yang Ming Chiao Tung University, Hsinchu, Taiwan Chip-GaN Power Semiconductor,