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A new space vector modulation scheme for three phase four wire inverter for standalone photovoltaic systems
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| Author(s) |
SALEM Fouzey; UeNSALVER Caner; HOFMANN W.; E |
| Abstract |
Three phase inverters with unbalanced load have a lot of disadvantages like small utilisation of the DC-link voltage, dependency of the modulation factor of the load current, and the superposition of a DC component with the output AC voltage. The four-phase inverter is able to supply both symmetrical and asymmetrical consumers in the three-phase standalone photovoltaic nets. By the additional half bridge possible to reduce the DC-link voltage by 16\% and dc-link capacity by 35\%. In this paper a three dimensional space vector modulation for a four leg inverter for standalone photovoltaic systems is presented to solve these problems. A digital control based on a load current observer will be implemented according to [1], to control the whole system with a microcontroller. Simulation results are presented to verify the performance of the proposed system. |
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| Filename: | 0643 |
| Filesize: | 328.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-05 by System |
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