基于不确定性和干扰估计的DAB转换器的输出电压控制
Haijun Tian1, Zheng Zhou1, Yuanshuai Liu1
1School of Automation Engineering, Northeast Electric Power University, Jilin, Jilin, China.
PeerJ. Computer science
|July 10, 2024
概括
本研究引入了使用不确定性和干扰估计器 (UDE) 的强有力的控制方案,以提高双重主动桥梁 (DAB) 转换器的精度. 基于UDE的控制器有效地减少了由系统不确定性和外部干扰引起的输出电压错误.
科学领域:
- 电力电子 电力电子 电力电子
- 控制系统工程 控制系统工程
- 电气工程 电气工程
背景情况:
- 双活性桥 (DAB) 转换器对于直流电压调节至关重要.
- 控制不准确是由于干扰,负载/电压变化和开关损失造成的.
- 现有的控制方法与固有的系统不确定性作斗争.
研究的目的:
- 为DAB转换器开发一个强大的控制方案.
- 为了提高输出电压的准确性和系统稳定性.
- 为了减轻不确定性和干扰对DAB转换器性能的影响.
主要方法:
- 建立了DAB转换器的平均小信号模型.
- 介绍了不确定性和干扰估计器 (UDE) 的原理.
- 将UDE应用于DAB转换器的小信号模型,用于直接调节转速比.
主要成果:
- 基于UDE的控制方案有效地减少了输出电压错误.
- 在抑制系统不确定性和干扰方面表现出显著的优势.
- 实验研究证实了拟议方案的有效性和稳定性.
结论:
- UDE提供了一个强大的解决方案来提高DAB转换器的控制精度.
- 这种方法可以在各种操作条件下提高系统性能.
- 基于UDE的控制方案为先进的电力电子应用提供了一种可行的方法.
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