Device for applying at least one electrical pulse to at least one electrical coil of a track brake of a rail vehicle

摘要

The invention relates to a device (28) for supplying at least one electrical excitation coil (9) with at least one electrical current pulse in order to alternatively permanent-magnetize or demagnetize, regarding the magnetic polarity, at least one magnet segment (5), containing hard magnetic material, of a brake magnet (2) of a track brake of a rail vehicle. The device is characterized by a) at least one long-term energy store (34), which can be supplied with electrical energy by a vehicle electrical system circuit (32) of the rail vehicle that is under vehicle electrical system voltage at least at times, b) at least one magnetization circuit (38), comprising a voltage transformer (36) for transforming the vehicle electrical system voltage supplied by the long-term energy store (34) to a specified magnetization voltage and for charging at least one high-current energy store (40) with electrical energy under magnetization voltage and comprising a switching device (42) that is connected in an electrically conductive manner to the high-current energy store (40) at one end and to the excitation coil (9) at the other end, by means of which switching device current pulses to the excitation coil (9) that are based on the electrical energy stored in the high-current energy store (40) and that can be alternatively varied regarding the current flow direction can be switched according to the control signals controlled by a control device (44).