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Extreme High Efficiency PV-Power Converters
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| Author(s) |
Bruno BURGER, Dirk KRANZER |
| Abstract |
Photovoltaic (PV) inverters convert the DC current of solar generators into AC current and feed it into the grid. There are three basic inverter topologies: inverters with low frequency (50/60 Hz) transformer (LF), inverters with high frequency transformer (HF) and transformer-less inverters (TL). The European market is dominated by transformer-less types (80\%), in Japan approx. 50\% of the inverters are transformer-less and in USA up to now mostly transformer based inverters are used due to national standards. The efficiency of the transformer-less inverters is up to 98\% in series products and in research 99\% efficiency has been reached. Such extreme high efficiencies can be achieved with three level or multilevel inverter topologies and new power semiconductors like Silicon Carbide (SiC) and Gallium Nitride (GaN). |
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| Filename: | 1123-epe2009-full-20580850.pdf |
| Filesize: | 282.7 KB |
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| Type |
Members Only |
| Date |
Last modified 2010-01-27 by System |
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