Title :
Optimisation of photovoltaic water pumps coupled with an interfacing pulse width modulated DC/AC inverter power conditioning device
Author_Institution :
Tampere Univ. of Technol., Finland
Abstract :
A proper matching of electromechanical loads to a PV array is a great problem in many PV power systems. This is mainly related to the nonlinear solar irradiance and cell temperature-dependent voltage and current characteristic of the PV array generator. A simple nonlinear optimisation technique is used to solve the load matching problem of a PV water pumping system. A number of case studies (at best and worst month solar radiation situations) are presented based on the power consumption of the load. Results show that, an optimum matching factor of 0.74 and 0.55 (at best and worst month respectively) can be achieved using 1.76 kWp M55 type PV array and M402/SP5A-7 type motor/pump with SA1500 DC/AC inverter interfacing device in this works field study area. It is possible to achieve a higher load matching factor by selecting carefully the proper size of the array and the motor/pump
Keywords :
DC-AC power convertors; electric motors; invertors; load (electric); optimisation; photovoltaic power systems; power consumption; pumps; solar cell arrays; solar cells; water supply; DC/AC inverter; PV array; PV power system; PV water pumping system; load matching optimisation; matching factor; nonlinear optimisation technique; power consumption; pump motors; sizing; Character generation; Equivalent circuits; Optical arrays; Photovoltaic systems; Pulse width modulation; Pulse width modulation inverters; Solar power generation; Space vector pulse width modulation; Temperature; Voltage;
Conference_Titel :
Photovoltaic Energy Conversion, 1994., Conference Record of the Twenty Fourth. IEEE Photovoltaic Specialists Conference - 1994, 1994 IEEE First World Conference on
Conference_Location :
Waikoloa, HI
Print_ISBN :
0-7803-1460-3
DOI :
10.1109/WCPEC.1994.520170
