Title :
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
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;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073984
