PWM modulated three-level single-phase grid-connected PV inverter

Author

Zhu, Wenjie ; Zhou, Keliang ; Cheng, Ming ; Zhu, Li ; Su, Xiu´e

Author_Institution

Sch. of Electr. Eng., Southeast Univ., Nanjing, China

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

3

Abstract

In this paper, a PWM modulated Three-Level single-phase grid-connected inverter is proposed for photovoltaic (PV) generation system to reduce ripple of the current injected into the grid and reduce the voltage stress on the switches of the inverter To achieve high quality output sinusoidal current, a Proportional-Resonant (PR) controller is applied to the PV inverter. Moreover, a dynamic voltage compensator is used to reduce the THD of output current. Simulation results are provided to testify the validity and feasibility of the proposed scheme.

Keywords

PWM invertors; harmonic distortion; photovoltaic power systems; power generation control; power grids; proportional control; resonant invertors; switchgear; PR controller; PV generation system; PWM modulated three-level single-phase grid-connected PV inverter; THD reduction; current injected ripple reduction; dynamic voltage compensator; inverter switch; photovoltaic generation system; proportional-resonant controller; quality output sinusoidal current; voltage stress reduction; Arrays; Bridge circuits; Harmonic analysis; Inverters; Reactive power; Steady-state; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073984

Filename

6073984