Objectif In order to improve the overall energy efficiency and availability of photovoltaic energy generating plants, technical data on inverters and charge controllers were studied as well as the control rationale. The actual energy gain connected with maximum power point (MPP) tracking was investigated by a 3-fold effort, namely, by simulating MPP behaviour based on measured data, by actually measuring MPP performance on test sites and by analysing data.Conclusions of this work are as follows:a database on power conditioning equipment has been produced;technology development needs have been formulated;concrete modifications have been performed in close cooperation with plant managers and have proven the potential for improvement;it has been realised that MPP tracking may not be advisable.Special attention has been directed to the determination of overall energy efficiency and the related question of sizing the power conditioning equipment.THE POWER CONDITIONING AND CONTROL SUBTASK OF THE EC FUNDED CONCERTED ACTION COMPRISES THE SYSTEMS ANALYSIS OF THE COMPONENTS INVERTER, CONVERTER AND BATTERY CHARGER AS WELL AS THE CONTROL AND POWER MANAGEMENT STRATEGY. THE ON-GOING PROJECT IS DESCRIBED WITH EMPHASIS PLACED ON INVERTER EFFICIENCY. IT IS DESCRIBED IN TERMS OF A SIMPLE ANALYTICAL FORM IN ORDER TO GIVE THE PRACTIONER NUMERICAL VALUES AT HAND, WHICH CHARACTERIZE THE DEVICE ALSO AT THE REGIME OF PARTIAL LOAD, SO IMPORTANT TO PHOTOVOLTAIC APPLICATIONS. THE DATA OF DC/DC CONVERTERS HAS BEEN COLLECTED AS WELL. WORK HAS BEGUN TO DESCRIBE THIS DEVICE QUANTITATIVELY, TOO. FAILURE MODES AND POSSIBLE SOLUTIONS TO THE PROBLEMS ARE BEING DISCUSSED. AN EXTENSIVE PROGRAM HAS BEEN STARTED TO SCRUTINIZE THE PRESENT MAXIMUM POWER POINT TRACKING SYSTEMS AND THEIR EFFICIENCY AS WELL AS POWER AND LOAD MANAGEMENT SYSTEMS TO BE IMPLEMENTED USING THE HYBRID PLANTS TERSCHELLING AND KYTHNOS AS CASE STUDIES. Champ scientifique natural sciencescomputer and information sciencesdatabasesengineering and technologyenvironmental engineeringenergy and fuelsrenewable energysolar energyphotovoltaic Programme(s) FP1-ENNONUC 3C - Research and development programme (EEC) in the field of Non-Nuclear Energy, 1985-1988 Thème(s) Data not available Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.* Contribution de l’UE Aucune donnée Adresse Heidenhofstrasse 2 79110 FREIBURG (IN BREISGAU) Allemagne Voir sur la carte Coût total Aucune donnée
