METHOD FOR OPERATING AN INVERTER AND INVERTER COMPRISING A SWITCH BETWEEN A CENTER POINT OF A DC LINK AND A CONNECTION FOR A NEUTRAL CONDUCTOR OF AN AC GRID

METHOD FOR OPERATING AN INVERTER AND INVERTER COMPRISING A SWITCH BETWEEN A CENTER POINT OF A DC LINK AND A CONNECTION FOR A NEUTRAL CONDUCTOR OF AN AC GRID

A method of operating a transformerless inverter connected on the input side to a generator and on the output side to a multiphase AC grid and comprising a multi-phase inverter bridge with a switch between a midpoint of a DC intermediate circuit on the input side and a terminal for a neutral conduct...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: BREMICKER, Sven
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
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:A method of operating a transformerless inverter connected on the input side to a generator and on the output side to a multiphase AC grid and comprising a multi-phase inverter bridge with a switch between a midpoint of a DC intermediate circuit on the input side and a terminal for a neutral conductor of the multiphase AC grid, includes feeding electric power from the DC intermediate circuit into the AC grid by the inverter bridge with the switch closed when first operating conditions are present, and opening the switch when there is a transition from the first operating conditions to second operating conditions different from the first operating conditions. The method further includes feeding electric power from the DC intermediate circuit into the AC grid by the inverter bridge with the switch open when the second operating conditions are present, and closing the switch when there is a transition from the second operating conditions to the first operating conditions.