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| The Comparative Study of the Control Methods of Single-phase Grid-connected Inverter |
| Yang Lulu1, Shi Bin1, Xie Lingling2 |
| 1. School of Electrical Engineering, Southeast University, Nanjing 210096; 2. Power company in Nanchang, Nanchang 330006 |
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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.
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Published: 11 March 2014
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| Cite this article: |
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Yang Lulu,Shi Bin,Xie Lingling. The Comparative Study of the Control Methods of Single-phase Grid-connected Inverter[J]. Electrical Engineering, 2014, 15(02): 33-37.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2014/V15/I02/33
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2014, Vol. 15 
