Predictive Control of Grid-Connected Multilevel Inverter with Output LCL Filter

被引：4

作者：

Pastor, Marek ^{[1
]}

Dudrik, Jaroslav ^{[1
]}

机构：

[1] Tech Univ Kosice, Fac Elect Engn & Informat, Dept Elect Engn & Mechatron, Kosice 04200, Slovakia

来源：

ELEKTRONIKA IR ELEKTROTECHNIKA | 2015年 / 21卷 / 03期

关键词：

Active damping; Kalman observer; LCL filter; model predictive control; multilevel inverter;

D O I：

10.5755/j01.eee.21.3.10033

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：

The paper deals with a control of a multilevel grid connected photovoltaic inverter with an LCL output filter. A proposed control technique uses the dynamical model of the LCL filter and ensures inherent active damping of the LCL filter oscillations. The inverter is a one-phase cascade H-bridge inverter with three galvanically separated DC sources and the model predictive control is used as a control technique. A Kalman observer is used to minimize the number of required sensors. Only the grid current and the grid voltage measurements are needed. The model predictive control ensures active damping for the LCL filter. This removes the need for a passive damping of the LCL filter and increases overall system efficiency. The design of the model predictive controller as well as the design of the Kalman observer is presented. The proposed control technique is verified by simulations and measurements on the laboratory model.

引用

页码：10 / 15

页数：6

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