一个改进的IPT-PLL技术用于复杂的电网条件下的单相电网连接逆变器
Zhang Tao1,2, Dong Dezhi3
1Research Center for Photovoltaic System Engineering of Ministry of Education, Hefei University of Technology, Hefei, 230009, China.
Scientific reports
|May 28, 2024
概括
这项研究引入了一种改进的逆Park转换相锁循环 (IPT-PLL) 微电网. 新技术增强了复杂电网中的频率跟踪和和声抑制.
科学领域:
- 电气工程 电气工程
- 电力系统 电力系统
- 控制系统 控制系统
背景情况:
- 复杂的电网面临频率变化和波扭曲的挑战.
- 微电网中的单相转换器需要强大的相锁循环 (PLL) 技术.
研究的目的:
- 为微电网中的单相转换器提出一个改进的逆Park转换相锁循环 (IPT-PLL).
- 提高适应复杂电网条件的适应性,提高跟踪性能.
主要方法:
- 使用帕克转换的α元件和1/4基本周期延迟进行相位检测.
- 使用拉格朗奇插值多项式来近似分数延迟,减轻频率变化错误.
- 将多共振控制器与比例积分 (PI) 调节器集成在一起,以抑制低阶波.
主要成果:
- 证明了改进的IPT-PLL对复杂电网的强大的适应性.
- 显著改善了电网频率跟踪性能.
- 有效地抑制低级波干扰和直流偏差,具有良好的动态和静态性能.
结论:
- 提议改进的IPT-PLL在微电网应用中提供了卓越的性能.
- 它有效地解决了复杂电网中的频率变化和波干扰.
- 该技术提供可靠的动态和静态特性,以提高电网稳定性.
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