基于Saber平臺(tái)的光伏并網(wǎng)微逆變器建模及仿真分析
高延麗1，焦曉雷1，黃紅橋2，徐柯1
1 國(guó)電南瑞科技股份有限公司，江蘇 南京 210061；
2 湖南省電力公司永州分公司，湖南 永州 425000
摘 要：設(shè)計(jì)了一種單級(jí)式微逆變器控制系統(tǒng)，針對(duì)傳統(tǒng)PI控制不能實(shí)現(xiàn)無(wú)靜差控制的缺點(diǎn)，提出了一種可實(shí)現(xiàn)并網(wǎng)電流無(wú)靜差的準(zhǔn)PR并網(wǎng)控制策略，基于Saber平臺(tái)建立了光伏并網(wǎng)微逆變器仿真系統(tǒng)。仿真結(jié)果表明，采用準(zhǔn)PR控制的微逆變器具有很好的輸出電壓和電流特性，總諧波畸變率均低于公共電網(wǎng)諧波國(guó)家標(biāo)準(zhǔn)。
關(guān)鍵詞：微逆變器；光伏并網(wǎng)；準(zhǔn)PR控制；Saber平臺(tái)
中圖分類號(hào)：TM464；TM615 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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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