Abstract: A switching module, intended to be used in a medium or high voltage DC breaker or a DC current limiter, includes at least one power semiconductor switching element, a gate unit arranged to turn the at least one power semiconductor switching element on and off, respectively, according to a switching control signal, and an energy storage capacitor arranged to provide power to a power supply input of the gate unit. The switching module further includes a power transformation device arranged to receive an optical power signal, to transform the optical power signal into an electrical power signal and to provide the electrical power signal to the energy storage capacitor.

Abstract: A switching module, intended to be used in a medium or high voltage DC breaker or a DC current limiter, includes at least one power semiconductor switching element, a gate unit arranged to turn the at least one power semiconductor switching element on and off, respectively, according to a switching control signal, and an energy storage capacitor arranged to provide power to a power supply input of the gate unit. The switching module further includes a power transformation device arranged to receive an optical power signal, to transform the optical power signal into an electrical power signal and to provide the electrical power signal to the energy storage capacitor.

Abstract: The present invention relates to a method of controlling the spark current in a spark plug (8), comprising a voltage source (1; 14), an ignition system (2) connected to the voltage source, and a spark plug (8) connected to the ignition system, which ignition system (2) comprises an ignition coil (3) and at least one regulating unit (5, 6) as well as a control unit (4), enabling control of the intensity and/or duration of the spark current, said ignition coil (3) comprising a secondary side (6, 31) arranged to be controlled in order to control the duration of the spark in Arc Discharge Mode. The invention also relates to an ignition device.

Abstract: The present invention relates to a method of controlling the spark current in a spark plug (8), comprising a voltage source (1; 14), an ignition system (2) connected to the voltage source, and a spark plug (8) connected to the ignition system, which ignition system (2) comprises an ignition coil (3) and at least one regulating unit (5, 6) as well as a control unit (4), enabling control of the intensity and/or duration of the spark current, said ignition coil (3) comprising a secondary side (6, 31) arranged to be controlled in order to control the duration of the spark in Arc Discharge Mode. The invention also relates to an ignition device.