Control of a Three-Phase Inverter under Unbalanced Grid Conditions

被引：0
|
作者：
Chowdhury, Vikram Roy [1 ]
Mukherjee, Subhajyoti [1 ]
Shamsi, Pourya [1 ]
Ferdowsi, Mehdi [1 ]
机构：
[1] Missouri Univ Sci & Technol, Dept Elect & Comp Engn, Rolla, MO 65409 USA
来源：
2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2017年
关键词：
3-phase inverter; Lyapunov energy function; LCL filter; unbalanced grid; current control;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A control strategy for a three-phase grid connected inverter with LCL filter based on Lyapunov energy function during unbalanced grid conditions is presented in this paper. To reduce complexity and number of variables the control strategy is accomplished in a stationary two phase reference frame. Dual second-order generalized integrator structure (DSOGI) is utilized to extract the positive and negative sequence components of voltages and currents for unbalanced operation. A virtual resistor based active damping methodology based on indirect capacitor current feedback is employed to nullify the resonance oscillations due to the third order (LCL) filter. By using Lyapunov energy function based control, a direct grid current control architecture is achieved at the desired power factor.
引用
收藏
页码：2909 / 2913
页数：5
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