Nonlinear Control Design for the Photovoltaic Isolated-Port Architecture with Submodule Integrated Converters

被引：0

作者：

Levron, Yoash ^{[1
]}

Clement, Daniel ^{[1
]}

Maksimovic, Dragan ^{[1
]}

Olalla, Carlos ^{[2
]}

机构：

[1] Univ Colorado, Dept Elect Comp & Energy Engn, Boulder, CO 80309 USA

[2] Univ Rovira & Virgili, Dept Elect Elect & Automat Control Engn, Tarragona, Spain

来源：

2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2013年

关键词：

POWER POINT TRACKING;

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：

Differential power processing (DPP) isolated-port architecture with submodule integrated converters (subMICs) enables improved energy capture in photovoltaic (PV) power systems. This paper describes a control scheme for flyback subMICs operating in discontinuous conduction mode (DCM). The duty-cycle is driven in proportion to a voltage error, with no further processing, thus eliminating the need to measure or to control the current explicitly. The approach is well suited for very simple, analog PWM controller implementation, but the resulting control loops become nonlinear. The system stability is demonstrated using the Lyapunov stability theorem. Experimentally measured module-level efficiency is greater than 95% for a 72-cell PV module having 3 substrings with solar irradiation of 80%, 60% and 40%, respectively.

引用

页码：2398 / 2405

页数：8

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