Abstract: A power converter arrangement includes a semiconductor switch system with a controllable switch. A capacitor unit includes a capacitor having a capacitance value, the capacitor unit being operatively connected to the semiconductor switch system. A conductor arrangement includes a conductor adapted to conduct an electric current between the capacitor unit and the semiconductor switch system. The conductor has a resistance and an inductance. A resonant circuit is formed by the resistance, the inductance and the capacitance, and the power converter arrangement includes at least one attenuating element for attenuating an electrical ringing in the resonant circuit. The attenuating element is conductively isolated from the resonant circuit. The attenuating element includes ferromagnetic material, and the attenuating element is magnetically coupled to the conductor such that variations in the electric current intensity of the conductor induces eddy currents within the attenuating element.

Abstract: A choke comprising a magnetic core having a centre line that forms a closed loop, the choke has a choke axis around which the magnetic core is located, and a coil wound around the magnetic core, the coil has a plurality of turns, each of the turns has a width perpendicular to lengthwise direction of the turn, and a thickness perpendicular to both lengthwise direction of the turn and the width. The coil has a cross-section whose shape varies along lengthwise direction of the coil, such that each turn has an inner portion and an outer portion whose width is substantially greater than width of the inner portion, the outer portion is located further from the choke axis than the inner portion.

Abstract: A power converter arrangement including a semiconductor switch system including at least one controllable switch, a capacitor unit including at least one capacitor having a capacitance value, the capacitor unit being operatively connected to the semiconductor switch system, a conductor arrangement including of at least one conductor adapted to conduct an electric current between the capacitor unit and the semiconductor switch system, wherein the at least one conductor having a resistance and an inductance, and wherein a resonant circuit is formed by the resistance, the inductance and the capacitance, and wherein the power converter arrangement includes at least one attenuating element for attenuating an electrical ringing in the resonant circuit, wherein the at least one attenuating element is conductively isolated from the resonant circuit, and wherein the at least one attenuating element includes ferromagnetic material, and wherein the at least one attenuating element is magnetically coupled to the at least

Abstract: A choke comprising a magnetic core having a centre line that forms a closed loop, the choke has a choke axis around which the magnetic core is located, and a coil wound around the magnetic core, the coil has a plurality of turns, each of the turns has a width perpendicular to lengthwise direction of the turn, and a thickness perpendicular to both lengthwise direction of the turn and the width. The coil has a cross-section whose shape varies along lengthwise direction of the coil, such that each turn has an inner portion and an outer portion whose width is substantially greater than width of the inner portion, the outer portion is located further from the choke axis than the inner portion.

Abstract: A gate driver circuit and a method of operating a gate driver circuit. The gate driver circuit comprising a high auxiliary voltage rail and a low auxiliary voltage rail for receiving high auxiliary voltage and low auxiliary voltage, output stage connected to the auxiliary voltage rails and comprising a control input and an output terminal for providing an output voltage of the gate driver, plurality of series connections of controllable switches and resistive components, wherein a first part of the plurality of series connections is connected between the high auxiliary voltage rail and control input of the output stage, and a second part of the plurality of series connections is connected between the low auxiliary voltage rail and control input of the output stage, and a control circuit for controlling the controllable switches for providing a control voltage and a control current to the control input of the output stage.

Abstract: A gate driver circuit and a method of operating a gate driver circuit. The gate driver circuit comprising a high auxiliary voltage rail and a low auxiliary voltage rail for receiving high auxiliary voltage and low auxiliary voltage, output stage connected to the auxiliary voltage rails and comprising a control input and an output terminal for providing an output voltage of the gate driver, plurality of series connections of controllable switches and resistive components, wherein a first part of the plurality of series connections is connected between the high auxiliary voltage rail and control input of the output stage, and a second part of the plurality of series connections is connected between the low auxiliary voltage rail and control input of the output stage, and a control circuit for controlling the controllable switches for providing a control voltage and a control current to the control input of the output stage.

Abstract: A gate drive circuit creates a bipolar voltage to a gate of an IGB power transistor, and compensates for Miller currents of the IGB power transistor. The compensating is performed by a switching element connected in series with a capacitor between the gate (X4) and a supply voltage.

Abstract: A gate drive circuit creates a bipolar voltage to a gate of an IGB power transistor, and compensates for Miller currents of the IGB power transistor. The compensating is performed by a switching element connected in series with a capacitor between the gate (X4) and a supply voltage.