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Optimized DC-To-AC Power Inverter For Power Grid Operation
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| Author(s) |
K. H. Edelmoser, F. A. Himmelstoss |
| Abstract |
State-of-the-art power inverters used in mains
coupled applications mostly struggle with the problem of the
hard switched PWM power stage operating at high DC-link
voltages [1,2]. Also soft switching topologies do not satisfy on all
accounts. In this paper the combination of simple boost- and
buck converter stages makes it possible to realize an optimal
design for power grid coupled inverters. The reduced voltage
stress of each stage can lead to a significant improvement of the
system losses. Furthermore, it is shown that a revised method of
energy storage in the ‘weak’ DC-link can be used to smooth the
input current. Sharing of the energy flow in each power stage
can also lead to reduce losses. The topology presented here
shows a remarkable improvement of the switching losses and
significantly reduced EMC. It is well suited for solar power and
battery powered inverter applications. |
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| Filename: | A32545 |
| Filesize: | 231.1 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-16 by System |
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