Modeling and simulation of the dual-power PV-grid energy system utilizing multilevel inverter

Author

Ibrahim, I.R. ; Hussain, Z. ; Omar, A.M.

Author_Institution

Fac. of Electr. Eng., Univ. Teknol. MARA (UiTM), Shah Alam, Malaysia

fYear

2011

fDate

25-27 Nov. 2011

Firstpage

575

Lastpage

579

Abstract

Dual-power PV-grid system was introduced to manipulate the lower tariff rate at off-peak period and to reduce the capital installation cost of PV energy system. In this paper, the system and simulation design of the system is discussed to evaluate the design parameters which affect the design performance of the power converter. It consists of a boost regulator to boost and regulate PV outputs to fixed voltage of 240V, 50Hz, a MPPT to derive maximum power from PV panels and a three operation modes of the battery converter to regulate charging current/discharging current under various PV output and load variation. The system utilizes 15 levels of cascaded multilevel inverter to invert DC voltage from solar panel to AC voltage. The simulation results certify the simulation model can emulate the real system.

Keywords

battery chargers; invertors; maximum power point trackers; photovoltaic power systems; power convertors; power grids; tariffs; MPPT; battery converter; boost regulator; capital installation cost; cascaded multilevel inverter; discharging current; dual-power PV-grid energy system; frequency 50 Hz; off-peak period; power converter; solar panel; tariff rate; voltage 240 V; Batteries; Inverters; Load modeling; Photovoltaic systems; Regulators; Voltage control; PV energy system; dual-power system; multilevel inverter; off-grid power supply; solar hybrid system;

fLanguage

English

Publisher

ieee

Conference_Titel

Control System, Computing and Engineering (ICCSCE), 2011 IEEE International Conference on

Conference_Location

Penang

Print_ISBN

978-1-4577-1640-9

Type

conf

DOI

10.1109/ICCSCE.2011.6190592

Filename

6190592