Abstract：Conventional PI controllers are usually used in single-phase grid-connected inverters for photovoltaic plants. These PI controllers suffer from two major drawbacks; steady-state errors in case of sinusoidal reference signals besides their limited disturbance rejection capability.To overcome these shortcomings deadbeat control and proportional-resonant（PR） controllers are investigated. First, the ability of the PR controller through introducing an infinite gain at a resonance frequency is analysed.The design of the PR-controller is investigated and steps for tuning the controller are given in this work. Using deadbeat control theory, and single-phase photovoltaic inverter system deadbeat controller is also designed.A simulation-based analysis is used to investigate the novel comparison between the PR controlle and deadbeat control, where the controllers’performance is evaluated and compared regarding: transient and steady-state characteristics as well as total harmonic distortion (THD). Theoretica results and experiments show that deadbeat controller showed better transient and disturbance rejection capabilities,while the PR controller exhibited excellent steady-state characteristics.
杨露露, 时斌, 谢玲玲. 单相逆变器并网控制方法的对比研究[J]. 电气技术, 2014, 15(02): 33-37.
Yang Lulu, Shi Bin, Xie Lingling. The Comparative Study of the Control Methods of Single-phase Grid-connected Inverter. Electrical Engineering, 2014, 15(02): 33-37.
2014, Vol. 15 
