在突发输入电压干扰的情况下,强大的增强计划前进补偿器具有准LPV模型
1Department of Electrical, Electronics and Computer Engineering, Graduate School of Natural and Applied Sciences, Düzce University, Konuralp Campus, Düzce, Türkiye.
ISA transactions
|August 22, 2025
概括
这项研究引入了DC-DC巴克转换器的强有力的控制策略,显著改善了干扰排斥和减少输出电压波动. 这种新方法提高了功率电子系统的可靠性和效率.
科学领域:
- 电气工程
- 控制系统
- 电力电子
背景情况:
- DC-DC Buck转换器在功率电子中至关重要,但容易受到输入电压干扰.
- 现有的控制策略往往难以应对突然发生的大规模干扰,从而影响系统的稳定性和性能.
研究的目的:
- 为DC-DC巴克转换器开发一个强大的控制策略,有效地减轻突然的输入电压干扰.
- 增强干扰排斥,减少输出电压波动,并提高整体系统的稳定性.
主要方法:
- 开发了一种包含寄生元素的新型准线性参数变化 (LPV) 模型.
- 使用线性矩阵不等式 (LMIs) 合成了增益计划的LPV前补偿器,用于减弱H∞干扰.
- 输入补偿器与反控制器集成,仅使用输入电压测量.
主要成果:
- 与PI控制器相比,建议的控制器实现了22. 46%的更高的干扰拒绝比率 (DRR) 和65倍的减弱比率 (AR).
- 输出电压波动减少了98.46%,干扰传输增益 (DTG) 仅为0.35%.
- 控制器表现出卓越的稳定性,在146.15%的输入电压干扰下保持99.65%的DRR.
结论:
- 开发的基于LPV的强有力的控制策略在干扰排斥和波纹减少方面明显优于传统方法.
- 仅使用输入电压测量的简化实现使其非常适用于苛刻的应用.
- 这种先进的控制技术非常适合可再生能源系统,电动汽车和工业电力转换器.
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