摘要
对于LCL并网逆变器在谐波下的控制策略,本文利用组合反馈,精简了反馈变量的测量;采用比例谐振控制,使系统获得较优的稳态性能和抗干扰性能;利用电网电压前馈,使系统对电网谐波具有良好的抑制能力,文章详细说明了该控制策略的参数设计步骤。仿真结果表明,该方法可使逆变器获得了高质量的并网电流。
In allusion to the resonance control strategy in grid-connected inverter with an LCL filter, the method of composite current feedback is adopted to streamline the measurements of feedback variables; proportional resonance （PR） control is put forward to enhance the stability of system and resistance against interference; and grid voltage feed-forward control is suggested to effectively compress the resonance caused by LCL filter. The effectiveness of the proposed control strategy is validated by detailed experiment parameters and the simulation.
出处
《电子科学技术》
2016年第6期676-681,共6页
Electronic Science & Technology
基金
四川省科技支撑计划项目(2015GZ0137)
关键词
LCL并网逆变器
组合反馈
比例谐振控制
电网电压前馈控制
LCL Grid-connected Inverter with an LCL Filter
Composite Current Feedback
ProportionalResonance
Grid Voltage Feed-forward Control
