Title :
Grid-connected PV System Using a Quasi-Z-source Inverter
Author :
Park, Jong-Hyoung ; Kim, Heung-Geun ; Nho, Eui-Cheol ; Chun, Tae-Won ; Choi, Jaeho
Author_Institution :
Kyungpook Nat. Univ., Daegu
Abstract :
This paper presents the MPPT (maximum power point tracking) and PCC (point of common coupling) current control strategy for photovoltaic (PV) grid-connected generating system using the quasi-Z-source inverter (QZSI). At first, in order to explain the above controllers, the characteristic of QZSI is analyzed. And then, the MPPT control technique with a modified P&O method, the PCC current control one for the regulation of DC-link capacitor voltage, and the PWM methods for the proposed system are explained. The feasibility of the propose algorithm is verified through the simulation and experiment with 3 kW system.
Keywords :
PWM invertors; electric current control; photovoltaic power systems; power control; power generation control; power grids; DC-link capacitor voltage; MPPT current control strategy; PCC current control strategy; PWM methods; grid-connected PV generating system; maximum power point tracking; point of common coupling; power 3 kW; quasi-Z-source inverter; Capacitors; Control systems; Current control; Mesh generation; Photovoltaic systems; Power generation; Pulse width modulation; Pulse width modulation inverters; Solar power generation; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-2811-3
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2009.4802773
