一个新的ZVS全桥级联升级直流-直流转换器,带有共振辅助电路,用于高电压增益应用
M Zakir Hossain1,2, Jeyraj A/L Selvaraj2, N A Rahim2
1Department of Electrical and Electronic Engineering, Dhaka University of Engineering & Technology, Gazipur, Bangladesh.
PloS one
|August 15, 2024
概括
一个新的高升级率全桥共振级联 (FBRC) dc-dc转换器实现了可再生能源系统的高电压增益. 这种设计减少了组件应力和切换损失,提高了光伏和电动汽车的效率.
科学领域:
- 电气工程 电气工程
- 电力电子 电力电子 电力电子
- 可再生能源系统可再生能源系统
背景情况:
- 高转换率的直流-直流转换器对于可再生能源的整合至关重要,因为它们的高收益要求.
- 像光伏 (PV),燃料电池 (FC) 和电动汽车 (EV) 这样的低压源需要高效的电压升级解决方案.
研究的目的:
- 提出和验证一种新的高升级比率全桥共振级联 (FBRC) dc-dc转换器.
- 为了实现低压输出可再生能源部门的高压增益.
- 为了提高效率和减少功率转换中的组件压力.
主要方法:
- 一个FBRC直流-直流转换器的设计,包括一个提升输入电感器,二极管电容器级联乘数器和LC共振网络.
- 实施零电压开关 (ZVS) 对于活跃设备,以尽量减少开关损失.
- 通过使用基于SiC的MOSFETs的500W实验室规模原型进行验证.
主要成果:
- 通过较低的工作周期运行实现了高电压升级,限制了主动设备的电流.
- 证明了从25%到满负荷的零电压切换 (ZVS),大大降低了切换损失.
- 报告了低输入电流波动 (5%) 和输出电压波动 (0.76%).
- 在400V输出,60V输入和400W负载下,达到95.8%的最大效率.
结论:
- 拟议的FBRC dc-dc转换器为可再生能源中的高压增益应用提供了一个有希望的解决方案.
- 减少组件数量,降低电压压力和提高效率使其具有成本效益和可靠性.
- 转换器的性能验证了其适用于光伏,电流和电动汽车能源系统的适用性.
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