However, actual simulators, including the commercial simulators, recreate only a single or small set of PV array characteristic curves in which quite commonly theoretical calculations are included in order to simulate irradiance and temperature artificial variations. In order to make these conditions repeatable at the laboratory, PV array simulators are used. The increasing number of photovoltaic inverters that are coming on to the PV market stresses the need to carry out a dynamic characterization of these elements and their maximum power point tracking (MPPT) algorithms under real operating conditions. The resulting solar tree is capable of attracting peoples attention, surviving in harsh environments and providing power up to around 100 W. Fur-thermore a low complexity charge controller is presented. The mechanical requirements and the developed solution is shown, before providing inten-sive insight into the electrical configuration, consisting of a battery, photovoltaic cells and a DC-AC converter. This paper will introduce the principle of provotypes, which are provoking human thinking toward environmen-tal friendly technology. The tree was real-ized under mechanical constraints and considerations of the electrical network to allow energy storage and conver-sion. A solar tree was developed and built to serve young people with an AC outlet at a rock festival.
Therefore this paper addresses a method of creating this awareness: installations that stimulate con-versations of renewable energy. The situation is quite clear to the ex-perts in the field, but further awareness in the public must be created. While a majority of the western civilization is aware of the downsides of fossil energy sources and is fa-voring renewable energy sources, the energy consumption is still increasing. Energy is seemingly permanently and nearly everywhere in the western world available to the end consumer.
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