Control of Three-Phase Cascaded Voltage Source Inverter for Grid-Connected Photovoltaic Systems

被引：0
|
作者：
Xiao, Bailu [1 ]
Hang, Lijun [1 ]
Tolbert, Leon M. [1 ]
机构：
[1] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA
来源：
2013 TWENTY-EIGHTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2013) | 2013年
关键词：
MULTILEVEL INVERTER; TOPOLOGIES;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A three-phase cascaded voltage source inverter (VSI) for a grid-connected photovoltaic (PV) system is proposed in this paper. The topology consists of three traditional two-level six-switch VSIs interconnected through inductors. Each VSI unit is fed by a string of PV panels. To realize the central control of the proposed system, the equivalent model and average model of the three-phase cascaded VSI are established. To harvest more solar energy, a control scheme with maximum power point tracking (MPPT) control is proposed. Phase-shifted discontinuous PWM (PS-DPWM) is applied to control the switching devices of each VSI unit. Simulation and experimental results are presented to validate the proposed ideas.
引用
收藏
页码：291 / 296
页数：6
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