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Input-Series and Output-Series High Voltage Converter with Active Balancing Circuit for N-1 Operation
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| Author(s) |
Tiago NABAIS LIMA |
| Abstract |
An input-series/output-series converter dedicated to high power applications is presented. Theconverter is composed of plural MF transformers based on DC-DC sub-converters. The seriesconnection allows reaching input-voltage levels in the range of several tens or hundreds of kV. Thepower level can be increased by modularity, even if the size of one MF transformer is generallylimited by the size of the available magnetic cores. Each sub-converter has at its primary side a 3-Level Half-Bridge inverter that generates the MF intermediary voltage. The output circuit of each subconverteris a simple diode rectifier. The series input circuit is completed by an active balancing circuitwhich allows the N-1 operation of the installed channels with unmodified input voltage conditions.The paper presents the new topology together with the adopted control structure. The performance ofthe proposed architecture and its possible mode of operation with one or more disabled sub-convertersis verified with a small-scale demonstrator. |
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| Filename: | 0557-epe2016-full-23200862.pdf |
| Filesize: | 1.111 MB |
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| Type |
Members Only |
| Date |
Last modified 2017-04-13 by System |
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