HEAT BALANCING IN A POWER CONVERTER

The present disclosure relates to a method for heat balancing performed in a full-bridge cell (3) of a phase leg of a Modular Multilevel Converter (MMC). The method comprises obtaining real-time measurements of parameters of the cell. The method also comprises, based on the obtained measurements, by...

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Bibliographische Detailangaben
1. Verfasser:	HEROLD, Simon
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The present disclosure relates to a method for heat balancing performed in a full-bridge cell (3) of a phase leg of a Modular Multilevel Converter (MMC). The method comprises obtaining real-time measurements of parameters of the cell. The method also comprises, based on the obtained measurements, by means of a predetermined mathematical model, estimating real-time heat losses at each semiconductor switching device (V1,..., V4) of the full-bridge. The method also comprises, based on the estimated losses, selecting one of a first and a second zero output voltage switching states for balancing heat between the switching devices, when a modulator of the MMC requests a zero output voltage of the cell.