基于灰色线性回归模型的新改进的滑动模式控制设计及其在光伏能源转换系统的纯正弦波逆变器中的应用
En-Chih Chang1, Yeong-Jeu Sun1, Chun-An Cheng1
1Department of Electrical Engineering, I-Shou University, No.1, Sec. 1, Syuecheng Rd., Dashu District, Kaohsiung City 84001, Taiwan.
Micromachines
|April 26, 2025
概括
本研究介绍了光伏系统的新控制策略,使用基于灰色线性回归模型的新增和改进的滑动模式控制 (NISMC) 来增强最大功率点跟踪 (MPPT) 和高质量的正弦波生成.
科学领域:
- 可再生能源系统可再生能源系统
- 控制理论 控制理论
- 电力电子 电力电子 电力电子
背景情况:
- 滑动模式控制 (SMC) 在光伏 (PV) 系统中很受欢迎,因为它的稳定性,但受到缓慢的融合和喋喋不休的影响.
- 传统的最大功率点跟踪 (MPPT) 算法与部分遮阳引起的多峰功率电压曲线作斗争.
- 太阳能控制的现有局限性可能导致系统性能和发电不足.
研究的目的:
- 为光伏系统开发一种新的控制策略,以提高MPPT准确性和正弦波质量.
- 解决传统SMC和MPPT算法的局限性,特别是在部分阴影条件下.
- 为了提高光伏逆变器的瞬态和稳定状态性能.
主要方法:
- 实施一个新的和改进的滑动模式控制 (NISMC) 与灰色线性回归模型 (GLRM) 集成.
- 使用GLRM来准确预测光伏系统中的全球状态点.
- 在光伏逆变器中使用NISMC用于MPPT和高质量的纯正弦波生成.
主要成果:
- 拟议的基于GLRM的NISMC确保了更快的有限系统状态融合,减少了聊天和稳定状态错误.
- 该策略在稳定状态和过渡条件下显示了逆变器输出电压的优越跟踪性能.
- 该系统符合电压下降/膨胀 (IEEE 1159-2019) 和总波扭曲 (THD <8% per IEEE 519-2014) 的IEEE标准.
结论:
- 基于GLRM的NISMC有效地提高了光伏系统中的MPPT性能和正弦波质量.
- 拟议的控制策略克服了传统方法的局限性,提供了更好的系统效率和稳定性.
- 实验验证证在各种操作条件下证实了NISMC战略的稳定性和有效性.
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