Title :
Two-stage PV inverter system emulator in converter based power grid emulation system
Author :
Wenchao Cao ; Yiwei Ma ; Jingxin Wang ; Liu Yang ; Jing Wang ; Wang, F. ; Tolbert, Leon M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Tennessee, Knoxville, TN, USA
Abstract :
This paper proposes a method of modeling and emulation of a two-stage photovoltaic (PV) inverter system by using a single power converter. The PV emulator is intended to be used in a converter-based power grid emulation system - Hardware Test-bed (HTB), in order to investigate the influence of solar energy sources on the power grid. Both physical components and control strategies of the two-stage PV inverter system are modeled in the converter controller, which enables the emulator to represent the behaviors of the two-stage PV inverter system accurately. The performance of the two-stage PV inverter system emulator in both the MPPT mode and the reserved power control mode under variable solar irradiance circumstances is illustrated by both simulation and experiments in the HTB environment, which verifies the effectiveness of the emulation.
Keywords :
invertors; maximum power point trackers; photovoltaic power systems; power control; power grids; MPPT mode; converter based power grid emulation system; hardware test bed; maximum power point tracker; photovoltaic inverter system emulator; reserved power control mode; variable solar irradiance; Active filters; Emulation; Inductors; Inverters; Mathematical model; Power control; Voltage control;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
DOI :
10.1109/ECCE.2013.6647305