基于Saber平台的光伏并网微逆变器建模及仿真分析
高延丽1，焦晓雷1，黄红桥2，徐柯1
1 国电南瑞科技股份有限公司，江苏 南京 210061；
2 湖南省电力公司永州分公司，湖南 永州 425000
摘 要：设计了一种单级式微逆变器控制系统，针对传统PI控制不能实现无静差控制的缺点，提出了一种可实现并网电流无静差的准PR并网控制策略，基于Saber平台建立了光伏并网微逆变器仿真系统。仿真结果表明，采用准PR控制的微逆变器具有很好的输出电压和电流特性，总谐波畸变率均低于公共电网谐波国家标准。
关键词：微逆变器；光伏并网；准PR控制；Saber平台
中图分类号：TM464；TM615 文献标识码：A 文章编号：1007-3175(2013)06-0019-04
Modeling and Simulation Analysis of Photovoltaic Grid-Connected Micro-Inverter Based on Saber Platform
GAO Yan-li1, JIAO Xiao-lei1, HUANG Hong-qiao2, XU Ke1
1 NARI Technology Development Co., Ltd, Nanjing 210061, China;
2 Yongzhou Branch of Hunan Electric Power Company, Yongzhou 425000, China
Abstract: A kind of single step micro-inverter control system was designed. Aiming at disadvantages of traditional PI control which is unable to realize non-static-error control, this paper raised a quasi proportion resonance (PR) grid-connected strategy carrying out grid-connection currents non-static-error control and built a photovoltaic grid-connected micro-inverter simulation system based on Saber platform. Simulation result shows that the micro-inverter in adoption of quasi proportion resonance grid-connected control strategy has very good output voltage and current characteristics and the whole harmonic distortion ratio is less than the national standard of public grid harmonics.
Key words: micro-inverter; photovoltaic grid-connected; quasi proportion resonance control; Saber platform
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