设计基于LMI-LQR的最佳PI控制器,用于风能转换系统中的模块化三相二次增压转换器,以减轻电流波
K Thirupura Sundari1, M G Umamaheswari2
1Department of Electronics and Instrumentation Engineering, Sri Sai Ram Engineering College, Tamil Nadu, India.
ISA transactions
|July 27, 2025
概括
本研究介绍了一种新的单阶段功率因子校正 (PFC) 转换器,使用用于风能转换系统 (WECS) 的二次增压转换器 (QBC). 这种方法减少了控制器,提高了可再生能源应用的效率和降低了成本.
科学领域:
- 电气工程 电气工程
- 可再生能源系统可再生能源系统
- 电力电子 电力电子 电力电子
背景情况:
- 风能转换系统 (WECS) 需要高效的功率因子校正 (PFC) 来确保电网兼容性和稳定的运行.
- 传统的PFC转换器通常涉及复杂的控制结构和众多的电流控制器,导致成本增加和效率降低.
研究的目的:
- 提出和验证一个创新的单阶段模块化三相PFC转换器,采用二次增压转换器 (QBC).
- 在WECS中尽量减少当前控制器的数量,以提高效率,减少计算负载和降低整体系统成本.
主要方法:
- 为非理想的直流-直流二进制增压转换器 (QBC) 开发同等电路和小信号模型.
- 采用内流环和外电压环的级联控制策略的实施,采用线性二次调节器来控制PI.
- 使用MATLAB/Simulink进行模拟,使用扩展对称组件方法进行参考电流生成.
- 在各种操作条件下使用DSPIC30F2010控制器对300W原型进行实验验证.
主要成果:
- 达到具有高功率因子 (PF) 和低百分比总波扭曲 (THD) 的正弦形供应电流.
- 成功调节负载电压并解决供应电压大小不平衡.
- 由于当前控制器的数量最小,已证明减少了计算任务,功耗和系统成本.
- 实验结果证实了拟议的PFC技术的有效性和提高效率.
结论:
- 拟议的单阶段模块化三相PFC转换器与QBC提供了一个高效的解决方案WECS.
- 减少当前控制器的数量可以显著提高效率,并降低系统的复杂性和成本.
- 经过验证的技术为可再生能源应用提供了强大的性能,高功率质量和高效的功率转换.
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