适应式扩展状态观察器用于双活跃桥梁转换器.
Tan-Quoc Duong1, Hoai-An Trinh2, Kyoung-Kwan Ahn2
1Department of Electrical, Electronic and Computer Engineering, University of Ulsan, Ulsan 44610, Republic of Korea.
Sensors (Basel, Switzerland)
|April 27, 2024
概括
本研究介绍了用于DC-DC双活跃桥 (DAB) 转换器的自适应式扩展状态观察器 (AESO). AESO平衡了跟踪精度和干扰排斥,改善了没有电流传感器的性能.
科学领域:
- 电气工程 电气工程
- 控制系统 控制系统
- 电力电子 电力电子 电力电子
背景情况:
- DC-DC双活跃桥 (DAB) 转换器对于双向能源传输和整合可再生能源至关重要.
- 扩展状态观察器 (ESO) 可以在没有电流传感器的DAB转换器中调节输出电压,从而降低系统成本.
- 在ESO中,高的观察者带宽可以改善跟踪,但降低了干扰抑制,而低的带宽则提供了相反的效果.
研究的目的:
- 为DAB转换器提出一个自适应扩展状态观察器 (AESO),优化跟踪性能和干扰抑制之间的权衡.
- 通过根据系统错误动态调整观测器带宽来增强DAB转换器的控制.
主要方法:
- 针对DAB转换器电压调节的自适应扩展状态观察器 (AESO) 的开发.
- 观测器带宽的动态调整:增加高压错误以促进跟踪,减少干扰拒绝.
- 使用模拟和实验验证对固定带宽ESO和改进的基于模型的相位移控制 (MPSC) 的比较分析.
主要成果:
- 与固定带宽ESO相比,拟议的AESO显示了跟踪精度和干扰抑制之间的优越妥协.
- 在不同的操作条件和干扰下,AESO有效地管理系统动态.
- 通过模拟和实验验证证证了AESO方法的有效性.
结论:
- 适应式扩展状态观察器 (AESO) 提供了一种有效的解决方案,用于提高DC-DC双活跃桥 (DAB) 转换器的控制性能.
- 这种无传感器控制策略可以降低系统的复杂性和成本,同时保持强大的性能.
- 拟议的方法为可再生能源整合和电力管理系统提供了宝贵的进步.
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