Modelling and simulation of a PV-inverter-asychronous motor association in photovoltaic pumping systems

Author

Adnène, Cherif ; Moncef, Jraidi

Author_Institution

Lab. Energetique, ENIT, Tunis, Tunisia

fYear

2001

fDate

2001

Firstpage

146

Lastpage

151

Abstract

In this paper, we introduce a method of control and sizing of photovoltaic systems in stand alone PV pumping plants. This approach is based on the dynamic model of the PV-DC/DC inverter-asynchronous motor. The DC-DC converter ensures an impedance adaptation between the PV and the load and an optimal PV panel output power extraction. However, the DC/AC converter ensures a PWM control of the induction motor and a sinususoidal output signal. This methodology allows an optimal control and monitoring of continuous-continuous and continuous-alternative converters by calculating respectively the DC/DC cyclic ratio and the DC/AC frequency. Contrary to classic methods, this method, which is based on the parametric model of the PV system, leads to a best prediction of the the PV installation especially with load and climatic fluctuations

Keywords

DC-DC power convertors; PWM invertors; induction motors; invertors; machine control; optimal control; photovoltaic power systems; pumps; DC/AC converter; DC/AC frequency; DC/DC cyclic ratio; MPPT; PV system parametric model; PV-DC/DC inverter-asynchronous motor; PV-inverter-asychronous motor association; PWM control; climatic fluctuations; continuous-alternative converters monitoring; continuous-continuous converters monitoring; control; dynamic model; induction motor; load fluctuations; maximum power point tracking; optimal PV panel output power extraction; optimal control; photovoltaic pumping systems; photovoltaic systems sizing; simulation; sinususoidal output signal; stand alone PV pumping plants; Analog-digital conversion; Control systems; DC motors; DC-DC power converters; Impedance; Photovoltaic systems; Power generation; Power system modeling; Pulse width modulation; Pulse width modulation converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering, 2001. LESCOPE '01. 2001 Large Engineering Systems Conference on

Conference_Location

Halifax, NS

Print_ISBN

0-7803-7107-0

Type

conf

DOI

10.1109/LESCPE.2001.941641

Filename

941641