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CONTROL OF A THREE-PHASE STEP-DOWN REVERSIBLE AC/DC CONVERTER
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| Author(s) |
T.C. Green; M.H. Taha; N.A. Rahim; B.W. Williams |
| Abstract |
The buck AC/DC converter is not naturally bidirectional unlike the boost converter. A bidirectional buck converter can be derived from anti-parallel bridges but presents control difficulties because it has two distinct modes of operation. The difficulties arise during current reversal transients because the integrity of the current path must be preserved during changes between rectification and inversion. A Simulink model of the proposed converter is developed and used to explore various control options. An arrangement of an inner current-control loop and outer voltage-control loop is found to give good voltage regulation despite load current transients and provides an effective way to change the mode of operation. The system was simulated with step demand changes and transiently regenerative loads. |
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| Filename: | Unnamed file |
| Filesize: | 383.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2018-05-17 by System |
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