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A Comparison of Virtual Circuit-Based Control Designs for Half-Bridge Converters with LCL Output Filters
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| Author(s) |
Korawich NIYOMSATIAN |
| Abstract |
This paper compares the design and performance of two controls for half-bridge converters with LCLoutput filters based on Virtual Circuit Design method, which is an intuitive way to achieve desiredclosed-loop behaviours as well as resonance damping and low-frequency behaviours. The first controlis represented by a circuit employing a resistor in series with a converter-side inductor to stabilize theresonance while the second one by a resistor in parallel with a filter capacitor. This yields differentlow-frequency behaviours and different designs of the current controllers. Moreover, both circuits featurethe adjustable virtual inductance to improve the bandwidth and the robustness. The experiment illustratesexcellent performances from the step response and fair robustness against grid-inductance variation. |
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| Filename: | 0599-epe2017-full-00232387.pdf |
| Filesize: | 1.447 MB |
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| Type |
Members Only |
| Date |
Last modified 2018-04-17 by System |
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