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DEVELOPMENT AND CHARACTERISTICS OF BATTERY-FED, HIGH POWER, HIGH-FREQUENCY CONVERTERS IN PARRALLEL OPERATION
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| Author(s) |
J. H. R. Enslin; J. D. Van Wyk; P. Van Rhyn; J. J. Schoeman |
| Abstract |
A 30 kVA high-frequency link converter, which consists of 6x5 kVA center-tap power block topologies operating in parallel, is considered for battery-fed dc-ac converter applications. Practical solutions on minimizing circulating currents between the different power blocks, avoiding transformer saturation in forced commutated center-tap topologies and minimizing transistor on-losses are incorporated and illustrated by means of practical measurements and results. A simple single capacitor snubber network, operating in parallel with a second stage capacitor snubber is proposed for these converter types. Typical applications include mobile and telecommunications uninterruptable power supply (UPS) systems, high ac-voltage loads fed from photovoltaic or hybrid energy systems and battery-fed mobile variable speed ac and dc drives. |
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| Filename: | Unnamed file |
| Filesize: | 4.151 MB |
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| Type |
Members Only |
| Date |
Last modified 2021-03-03 by System |
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