The disclosure relates to an electrified railway system, and in particular to systems, methods and apparatus for balancing a traction power supply with a three-phase electrical distribution grid. Examples disclosed include a method of balancing an electrical power supply of an electric railway system (200), the method comprising: providing an input AC supply from first and second phases (209, 208) of a three-phase electrical supply (201) to an input of a power electronics autotransformer (211), the power electronics transformer comprising first and second converters, an intermediate DC link and a controller connected to the first and second converters; converting the input AC supply to an intermediate DC supply with the first converter; converting the intermediate DC supply to an output AC supply with the second converter; and providing first and third phases (209, 207) of the three-phase electrical supply with the output AC supply from an output of the power electronics autotransformer (211), wherein the output AC supply is phase shifted by 120° relative to the input AC supply.
Electric railway
05.08.2020
Patent
Elektronische Ressource
Englisch
Engineering Index Backfile | 1895
Engineering Index Backfile | 1892
|Engineering Index Backfile | 1895
Engineering Index Backfile | 1895
Engineering Index Backfile | 1895