The invention relates to an electrical circuit (110) for equipment (102), particularly railway equipment, powered by an alternating electrical current, called fundamental, said electrical circuit (110) comprising at least one component (114, 116) powered b...

The present invention has an object of obtaining a converter which is capable of suppressing an instant voltage variation and outputting a desired DC power with a high precision. There are provided a power conversion unit (11) that conducts power conversio...

A method for controlling a drive unit (1, 1a, 1 b) and a drive unit of a vehicle connected to an AC-supply line (3). The drive unit comprises an AC/DC-converter (7) adapted to convert electric power to a target value and a control unit (15) comprising a re...