Control System Design of Battery-Assisted Quasi-Z-Source Inverter for Grid-Tie Photovoltaic Power Generation

被引：115
作者：
Liu, Yushan [1 ,2 ]
Ge, Baoming [1 ,3 ]
Abu-Rub, Haitham [2 ]
Peng, Fang Zheng [3 ]
机构：
[1] Beijing Jiaotong Univ, Sch Elect Engn, Beijing 100044, Peoples R China
[2] Texas A&M Univ Qatar, Dept Elect & Comp Engn, Doha 23874, Qatar
[3] Michigan State Univ, Dept Elect & Comp Engn, E Lansing, MI 48824 USA
来源：
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY | 2013年 / 4卷 / 04期
关键词：
Energy storage; grid-tie photovoltaic (PV) power system; quasi-Z-source inverter (qZSI); space vector modulation (SVM); BOOST CONTROL; VOLTAGE; PV;
D O I：
10.1109/TSTE.2013.2263202
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A control strategy for the quasi-Z-source inverter (qZSI) with a battery-based photovoltaic (PV) power conversion system is proposed. A battery-assisted qZSI can buck/boost PV panel voltage by introducing shoot-through states, and make full use of PV power by the energy-stored battery paralleled to the quasi-Z-source capacitor. A dynamic small-signal model of the battery-assisted qZSI is established to design a closed-loop controller for regulating shoot-through duty ratio and managing the battery's energy storage. A modified space vector modulation (SVM) technique for the qZSI is applied to achieve low harmonics, high voltage utilization, and high efficiency. A P-Q decoupled grid-tie power injection is fulfilled with the maximum power capture from PV panels and the unity power factor. The validity of the proposed PV system is proved by experimental results, showing an efficient method for the energy-stored PV power generation.
引用
收藏
页码：994 / 1001
页数：8
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