Title :
110 W low cost, efficient PV-grid interface for rural electrification
Author :
Mather, M.N. ; Malengret, M. ; Le Claire, J.C.
Author_Institution :
Eastern Cape Technikon, Cape Town Univ., Rondebosch, South Africa
Abstract :
PV-utility interface systems for remote rural South Africa are investigated: contemporary topologies are assessed and a unique concept formulated. Based on this, a low power 110 W prototype unit was developed using a highly integrated, low-cost microcontroller. The PV-panel attaches (via a DC-bus capacitor filter) to an H-Bridge. The H-bridge pulse width modulates the DC bus to create a high quality low voltage sine-wave (after an LC filter). The sine-wave is then stepped up to the utility voltage by a standard 50 Hz mains transformer. Preliminary experimental results are included
Keywords :
PWM power convertors; bridge circuits; photovoltaic power systems; solar cell arrays; transformers; 110 W; DC-bus capacitor filter; H-bridge; PV-grid interface; PV-panel; PV-utility interface systems; low voltage sine-wave; low-cost microcontroller; mains transformer; pulse width modulation; remote rural South Africa; rural electrification;
Conference_Titel :
Power Electronics and Variable Speed Drives, 2000. Eighth International Conference on (IEE Conf. Publ. No. 475)
Conference_Location :
London
Print_ISBN :
0-85296-729-2
DOI :
10.1049/cp:20000234
