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CIRCULAR CURRENT ANALYSIS IN A MEDIUM FREQUENCY PARALLEL OPERATING CONVERTER SYSTEM
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| Author(s) |
Iuliu Szekely; Vasile Szentgyörgyi |
| Abstract |
Medium frequency induction heating plants often employ large powers (a few MW). The paper investigates the parallel connection on medium frequency bars of parallel oscillating inverter converters with random loads. In view of developing the control strategy, the first step is an analysis of the circular currents occurring due to shape and control angle differences in the rectified voltages, as well as to internal control differences in the inverters. The analytical and computer analysis of the three phenomena have yielded some design formulae and diagrams which can prove useful in developing the control system of the converter system. Reference is made to a system of three converters having an overall power of 1.1 MW at 2500Hz, feeding a random number of heating inductors. The development of the system has been based on data furnished by the present study. |
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| Filename: | Unnamed file |
| Filesize: | 3.872 MB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-03 by System |
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