Abstract: A refrigerant compressor which has a drive unit and a compressor unit coupled thereto, wherein the drive unit has a motor housing through which refrigerant can flow and accommodates an electric motor with a rotatable shaft, wherein the compressor unit accommodates a scroll compressor which is driven by the shaft, wherein the motor housing includes a housing wall exposed to sucked-in refrigerant and an inverter unit joined thereto and accommodates an inverter circuit board, forming a fluid-tight inverter housing, wherein the inverter circuit board has a component arrangement formed with heat-producing electronic components, in particular with at least one DC link capacitor and multiple electronic power switches, and has at least two different component heights perpendicular to the inverter circuit board and is accommodated in multiple mouldings, which are formed according to the component heights, on the refrigerant-exposed housing wall and is thermally coupled to said mouldings.

Abstract: An arrangement and a method for discharging a DC link capacitor, is based on the object of specifying a solution with which the DC link capacitor is discharged to values below the safety extra-low voltage within a specified time in the event of a hazard or malfunction, for example, if the high-voltage supply is disconnected or interrupted, and with which the lowest possible power loss results from the arrangement during normal operation. This object is achieved by the arrangement in that the means which discharges the DC link capacitor is a controllable discharge means which is constructed from a series circuit of a discharge resistor and a controllable resistor, and wherein the controllable discharge means is arranged parallel to the DC link capacitor.

Abstract: An apparatus for permanently controlling an electronic switching unit, the apparatus including a controlling driver unit for supplying a control signal to the electronic switching unit using a charge storage device, and a charging driver unit for recharging the charge storage device.

Abstract: An apparatus for permanently controlling an electronic switching unit, the apparatus including a controlling driver unit for supplying a control signal to the electronic switching unit using a charge storage device, and a charging driver unit for recharging the charge storage device.

Abstract: A method for balancing in a multi-phase DC-DC converter, wherein at least two cells are provided, in each of which at least two phases of the DC-DC converter are grouped, wherein an operation of the individual cells is correlated with respective cell operating values, and an operation of the individual phases is correlated with respective phase operating values, and for balancing, an at least two-stage regulation is carried out with the steps: modulating the phase operating values of the phases as per a first regulation so that the phase operating values are modulated within the cell, and/or modulating the cell operating values of the cells as per a second regulation such that the cell operating values are modulated among themselves.