摘要
根据单相电压源型光伏并网发电系统的结构组成及其工作原理,采用双环控制策略,针对传统PID控制器在相位幅值控制方面存在的误差,采用新型的重复控制器,提高了系统的准确性;针对电网电压作为并网系统的扰动量,采用前馈补偿技术,提高了该系统的稳定性。Matlab仿真实验结果表明,该控制策略输出的交流电与电网电压更加同步。
Aecording to the basic structure and the working principle of a single-phase voltage source grid-connected PV sys- tem, it adopts the double-loop control technology .Aiming at deviation of the PID controller in the amplitude and phase, this paper uses a repetitive controller in this system which improves its accuracy; As for the grid voltage which be regarded as the grid distur- bance, this paper uses the feed forward compensation technique to improve the performance of the system. The Matlab simulations results show that the presented methodology is able to make the output AC track the grid voltage more efficiently.
出处
《微型机与应用》
2013年第8期72-74,78,共4页
Microcomputer & Its Applications
