双向六包SiC提升回转换器使用DC纳米电网中的Droop控制
1Department of Automotive Parts, Busan Machinery Research Center, Korea Institute of Machinery & Materials, Busan 46744, Republic of Korea.
Sensors (Basel, Switzerland)
|November 14, 2023
概括
本研究介绍了一种用于直流纳米电网的新型双向增压转换器,采用碳化物 (SiC) 智能电源模块 (IPM) 和垂落控制,以实现高效的功率转换和稳定的电压调节.
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:
- 直流纳米电网需要高效可靠的双向功率转换器.
- 现有的转换器在管理电压稳定性和电流共享方面面临着挑战.
- 碳化 (SiC) 技术为动力模块提供了效率和紧性的优势.
研究的目的:
- 为直流纳米电网提出并验证一种新的双向增压转换器拓.
- 通过混合控制方案提高效率并减少切换损失.
- 为了提高直流链的电压调节和电流共享的准确性,使用掉落控制.
主要方法:
- 设计了一种级联拓,结合了交叉增压转换器和回转换器.
- 采用六包SiC智能电源模块 (IPM) 来实现高效率和紧性.
- 实施了混合控制方案,以最大限度地减少切换操作,并实现顺的模式过渡.
- 集成直流下降控制作为电压调节和电流共享的二次控制.
主要成果:
- 拟议的转换器证明了由于混合控制方案而减少的切换损失.
- 在 boost 和 buck 模式之间实现了平稳的过渡,而不需要当前控制器切换.
- 观察到当前共享的精度提高,同时有效调节直流链路电压,而没有 sag.
- 使用两个20千瓦原型的实验验证证了转换器的性能.
结论:
- 开发的双向提升转换器与SiC IPM和垂落控制是有效的DC纳米电网.
- 混合控制策略显著降低了切换损失,并提高了运营流性.
- 该系统实现了卓越的电流共享和直流链路电压调节,解决了纳米电网电力管理的关键挑战.
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