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Poly-Phased Matrix Converter - A 27 input phases to 3 output phases experimental set-up running with hard and soft commutations
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| Author(s) |
Antoine BEGUIN, Alfred RUFER |
| Abstract |
This paper presents an experimental set-up of a 27 phases input to 3 phases output Poly-Phased MatrixConverter (27x3 PPMC) realised for the real time experimentation of the dedicated control electronics.When the original converter system is dedicated to the frequency conversion from a fast rotatinggenerator directly coupled to the gas turbine for feeding into the 50 Hz grid with a power level up tothe 100 MW range, the power level of the experimental set-up is chosen at about 1 kW. Firstexperimentations are documented with a frequency adaptation from 100Hz to 50Hz. The poly-phasedsynchronous machine’s induced voltages are emulated with 27 linear power operational amplifiers,feeding the primary winding of small transformers. The secondary windings built the polygonalconnection of the stator of the machine, and are connected to the 27 inputs of the poly-phased matrix.The PPMC is run in mix mode operation, which is a mix of natural and forced commutations. Thispaper also presents the theory that goes along with the mix mode operation of the PPMC andinvestigates especially the losses in the RC snubber circuits. |
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| Filename: | 0766-epe2011-full-22280060.pdf |
| Filesize: | 794.7 KB |
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| Type |
Members Only |
| Date |
Last modified 2012-01-26 by System |
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