MULTIUSE OF PHASE LEGS IN A POWER SUPPLY SYSTEM FOR A TRACTION UNIT

The invention relates to power supply system (102) for a traction unit (100), the traction unit (100) having a transformer (104) for providing a transformer AC voltage from an electrical grid (107, 160) and a battery (110) for providing a battery DC voltage, the power supply system (102) comprising:...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Wicki, Stefan, Knapp, Gerold, Mariappan, Senthilnathan, Stemmler, Christoph, Andersson, Caroline, Meyer, Francesca
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 CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS SYSTEMS FOR STORING ELECTRIC ENERGY TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to power supply system (102) for a traction unit (100), the traction unit (100) having a transformer (104) for providing a transformer AC voltage from an electrical grid (107, 160) and a battery (110) for providing a battery DC voltage, the power supply system (102) comprising: a DC link (112) for providing a DC link voltage; a first converter (114) and a second converter (116) for converting at least one of the transformer AC voltage and the battery DC voltage into the DC link voltage, wherein each of the first converter (114) and the second converter (116) comprises at least two half bridges (200, 202) and wherein each of the half bridges (200, 202) is connected in parallel to the DC link (112); a first transformer terminal (122) and a second transformer terminal (126) for connecting each pole (120, 124) of a secondary coil (108) of the transformer (104) to a midpoint (208) of at least one of the half bridges (200, 202); a first battery terminal (130) for connecting a first pole (158) of the battery (110) to a midpoint (208) of at least one of the half bridges (200, 202); a second battery terminal (133) for connecting a second pole (132) of the battery (110) to the DC link (112); a switch (134) switchable between a first closed state and a second closed state, wherein the switch (134) connects a midpoint (208) of one of the half bridges (200, 202) either to one of the first transformer terminal (122) and the second transformer terminal (126) in the first closed state or to the first battery terminal (130) in the second closed state.