Grid-Connected Photovoltaic System Based on QZSI

Jie Liu; Fei Wu

doi:10.4028/www.scientific.net/AMR.722.166

Paper Titles

Sensitivity Analysis in Transient Rotor Current Model and Control of DFIG during Voltage Sags
p.147

A New Approach of PWM Modulation of Improving Low-Frequency Characteristics of Inverter
p.153

AC Square-Wave Arc Model and Analysis of Characteristics Waveform
p.157

Optimization of Photovoltaic Grid-Connected Inverter System
p.161

Grid-Connected Photovoltaic System Based on QZSI
p.166

Modeling of Rotary Traveling Wave Ultrasonic Motor
p.171

Comparison of Permanent Magnet Linear Synchronous Motor Characteristics Fed by SPWM Inverter and Sinusoid Voltage Source
p.176

Analysis and Suppression of Detent Force in PMLSM
p.180

Algorithm Design and Implementation of Dynamic Star Simulator
p.187

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 722Grid-Connected Photovoltaic System Based on QZSI

Grid-Connected Photovoltaic System Based on QZSI

Abstract:

Quasi-Z-source inverter (QZSI) is a new topology, which has been proposed to be simple and realize the single stage energy conversion in recent years. Due to the unique impedance network structure, it has the characteristic of shoot-through. In this paper the voltage-source QZSI is applied to grid-connected photovoltaic system. Firstly the operating principle of QZSI is deep analyzed, and then a grid-connected photovoltaic system using a QZSI is proposed. In order to conform to the requirement of grid-connection, the decoupling control thought of active current and reactive current by d-q rotating coordinate system and the modified PWM strategy of this system are studied. The rationality and feasibility of the proposed control strategy is verified through MATLAB/Simulink.

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Periodical:

Advanced Materials Research (Volume 722)

Pages:

166-170

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.722.166

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Online since:

July 2013

Authors:

Jie Liu, Fei Wu

Keywords:

Decoupling Control, Photovoltaic Grid-Connected System, Quasi-Z-Source Inverter, Shoot-Through

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