Title :
A tranformerless grid-connected photovoltaic system with active and reactive power control
Author :
Lee, Su-won ; Kim, Jae-Hyung ; Lee, Seong-Ryong ; Lee, Byoung-kuk ; Won, Chung-Yuen
Author_Institution :
Center for Adv. IT HRD with closed Ind. Cooperation, Sungkyunkwan Univ., Suwon, South Korea
Abstract :
This paper presents a transformerless grid-connected photovoltaic (PV) system with active and reactive power control. The proposed system operations can be categorized into sunny mode and night mode. In night mode, it compensates for the reactive power demanded by nonlinear loads. In sunny mode, it not only supplies active power from the PV array to the grid or loads, but also performs power quality control (PQC), to improve the power factor and reduce the harmonic current. Simulation results are provided to demonstrate the effectiveness of the proposed system.
Keywords :
compensation; photovoltaic power systems; power factor; power generation control; power grids; power supply quality; power system harmonics; reactive power control; PV array; active power control; harmonic current; night mode; nonlinear load; power factor; power quality control; reactive power compensation; reactive power control; sunny mode; transformerless grid-connected photovoltaic system; Costs; DC-DC power converters; Inverters; Photovoltaic systems; Power quality; Power supplies; Reactive power; Reactive power control; Solar power generation; Topology;
Conference_Titel :
Power Electronics and Motion Control Conference, 2009. IPEMC '09. IEEE 6th International
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3556-2
Electronic_ISBN :
978-1-4244-3557-9
DOI :
10.1109/IPEMC.2009.5157763