Abstract: A frequency converter kit includes: basic units having a first plug-in connector by means of which the basic units are connectable to an AC voltage grid; a power electronics system; and a heat sink for cooling the power electronics system, wherein the heat sink has coupling elements; and extension units that are pluggable onto the basic units and have a port by means of which the extension units are connectable to the AC voltage grid; a first plug-in connector for forming a plug-in connection with the first plug-in connector of the basic units; and a housing element, the housing element having coupling elements. The coupling elements of the basic units and the coupling elements of the extension units are formed such that they interlock when the extension units are plugged onto the basic units.

Abstract: An electric motor with a heat source is arranged on a shaft in a co-rotating manner, wherein a first and a second cooling fin arrangement interact in order to dissipate heat from the heat source to the outside.

Abstract: A circuit board to be mounted in a non-drive end shield of an electric motor has a converter formed on the circuit board. The circuit board is divided into a central region and a number of toothed regions surrounding the central region, wherein planes of the toothed regions are bent with respect to a plane of the central region in a mounting position.

Abstract: A motor system includes a stator, a rotor, a number of power modules which each have planar contact faces for dissipating heat, a control device which is designed to actuate the power modules, a housing, wherein the stator and the rotor are arranged inside the housing, and at least one heat sink. The heat sink has a number of planar contact faces which are connected in a thermally conductive fashion to respectively corresponding contact faces of the power modules. The heat sink has regions for dissipating heat, wherein a coolant flows around the regions in order to dissipate heat.

Abstract: An electric motor with a heat source is arranged on a shaft in a co-rotating manner, wherein a first and a second cooling fin arrangement interact in order to dissipate heat from the heat source to the outside.

Abstract: A circuit board to be mounted in a non-drive end shield of an electric motor has a converter formed on the circuit board. The circuit board is divided into a central region and a number of toothed regions surrounding the central region, wherein planes of the toothed regions are bent with respect to a plane of the central region in a mounting position.

Abstract: A motor system includes a stator, a rotor, a number of power modules which each have planar contact faces for dissipating heat, a control device which is designed to actuate the power modules, a housing, wherein the stator and the rotor are arranged inside the housing, and at least one heat sink. The heat sink has a number of planar contact faces which are connected in a thermally conductive fashion to respectively corresponding contact faces of the power modules. The heat sink has regions for dissipating heat, wherein a coolant flows around the regions in order to dissipate heat.