Abstract: A method for supplying a number of electric charging stations with electricity, wherein AC voltage provided by an electricity source is transformed into a prescribed AC voltage level by at least one transformer via at least one star winding and at least one delta winding and subsequently routed via AC voltage lines to the number of electric charging stations and converted directly to direct current in respective charging stations from the number of electric charging stations locally by at least two rectifiers of the charging stations.

Abstract: A device for charging a battery system of a vehicle is provided. The battery system is configured to be charged by a charging unit, the charging unit is arranged in the vehicle, and the charging unit has an input and an output. The output is configured to be connected in an electrically conductive manner to the battery system in order to charge the battery system, a connection point for a releasable electrically conductive connection for transmitting an AC voltage for charging the battery system is arranged in the vehicle, and a receiver coil is arranged in the vehicle. In the receiver coil a voltage for charging the battery system is configured to be induced, and the input of the charging unit is configured to be connected in an electrically conductive manner to the connection point and/or to the receiver coil in order to charge the battery system.

Abstract: A method for controlling a three-phase AC motor, wherein the three-phase AC motor has a rotatably mounted rotor and a stator including a first group of coils and a second group of coils. Each of the coils generates an oscillating magnetic field upon actuation using an alternating current. The phases of the alternating currents are selected such that the superposition of the magnetic fields of the first group of coils generates a magnetic rotating field that rotates with a direction of rotation and the superposition of the magnetic fields of the second group of coils generates a magnetic rotating field that rotates counter to the direction of rotation. A system composed of a three-phase AC motor and an inverter for carrying out the control method is also described.

Abstract: A method for controlling a three-phase AC motor, wherein the three-phase AC motor has a rotatably mounted rotor and a stator including a first group of coils and a second group of coils. Each of the coils generates an oscillating magnetic field upon actuation using an alternating current. The phases of the alternating currents are selected such that the superposition of the magnetic fields of the first group of coils generates a magnetic rotating field that rotates with a direction of rotation and the superposition of the magnetic fields of the second group of coils generates a magnetic rotating field that rotates counter to the direction of rotation. A system composed of a three-phase AC motor and an inverter for carrying out the control method is also described.

Abstract: An electrical charging apparatus (10) for charging an electrical energy store of a motor vehicle (12) has an electrical connection (16) to electrically connect the charging apparatus (10) to a charging station (14) and to interchange electrical energy with the charging station (14). An electrical converter (18) is connected to the electrical connection (16) to interchange the electrical energy with the charging station (14) via the electrical connection (16) and to convert the electrical energy. A control unit (20) is connected to the electrical converter (18) to control the interchange of the electrical energy. A communication interface (22) is assigned to the control unit (20) and is designed to interchange data (34) with the charging station (14). The control unit (20) is designed to control the interchange of the electrical energy on the basis of the data.

Abstract: A high-voltage charge booster is provided for charging a direct current traction battery at a direct current charging pillar. The high-voltage charge booster has a converter (14) for transforming the first voltage level into the second voltage level if the first voltage level differs from the second voltage level. A bypass (16) bypasses the converter (14) or connects through a power stage if the first voltage level corresponds to the second voltage level.

Abstract: A vehicle, in particular an electric vehicle or a hybrid vehicle, having a charging apparatus for charging a vehicle-integrated energy storage cell by means of an external voltage source, wherein the charging apparatus has a charge pump for setting a voltage ratio between an input voltage and an output voltage, wherein the charge pump provides at east two discrete voltage ratios.

Abstract: An apparatus for installation in a vehicle for the inductive electrical charging or discharging of the vehicle by a primary coil includes an underbody panel and a secondary coil. The secondary coil is electrically connected to a power unit of the vehicle by a reversibly connectable electrical connection.

Abstract: A device for charging a battery system of a vehicle is provided. The battery system is configured to be charged by a charging unit, the charging unit is arranged in the vehicle, and the charging unit has an input and an output. The output is configured to be connected in an electrically conductive manner to the battery system in order to charge the battery system, a connection point for a releasable electrically conductive connection for transmitting an AC voltage for charging the battery system is arranged in the vehicle, and a receiver coil is arranged in the vehicle. In the receiver coil a voltage for charging the battery system is configured to be induced, and the input of the charging unit is configured to be connected in an electrically conductive manner to the connection point and/or to the receiver coil in order to charge the battery system.

Abstract: An energy supply system for supplying at least first and second components of a motor vehicle with electrical energy. The energy supply system is arranged in the motor vehicle and has a charging socket (60). At least the first component an energy store and at least the second component is a consumer. The at least one first component has a first electrical voltage and the at least one second component has a second electrical voltage. To carry out a charging mode, the motor vehicle is connected via the charging socket (60) to a charging station with which current which either has the first or the second electrical voltage is to be made available. A first charging mode, a second charging mode and a travel mode of the motor vehicle can be carried out with the energy supply system (52).

Abstract: A method for controlling a three-phase AC motor, wherein the three-phase AC motor has a rotatably mounted rotor and a stator including a first group of coils and a second group of coils. Each of the coils generates an oscillating magnetic field upon actuation using an alternating current. The phases of the alternating currents are selected such that the superposition of the magnetic fields of the first group of coils generates a magnetic rotating field that rotates with a direction of rotation and the superposition of the magnetic fields of the second group of coils generates a magnetic rotating field that rotates counter to the direction of rotation. A system composed of a three-phase AC motor and an inverter for carrying out the control method is also described.

Abstract: A method for positioning a motor vehicle above a ground plate includes determining, by ultrasonic sensors of the ground plate, data dependent on a location of the motor vehicle; transmitting the data from the ground plate to the motor vehicle by a radio connection; and carrying out positioning of the motor vehicle on the basis of the data until the location is above the ground plate.

Abstract: A charging station (10) for charging a plug-in motor vehicle (24) at a charging post (12) has a power transformer (14) and rectifier modules (16). The power transformer (14) has terminal leads (18) that are DC-isolated on the secondary side. The terminal leads (18) are connected at least partially to the rectifier modules (16). The power transformer (14) and the rectifier modules (16) are configured so that the rectifier modules (16) emit a low DC voltage when the power transformer (14) is fed with a medium voltage.

Abstract: A circuit system for a charging station which is configured to charge an energy store in a vehicle, the circuit system including a transformer with transformer outputs which are DC-isolated from one another, a first subsystem and a second subsystem each being connected to one of the transformer outputs. The first subsystem and the second subsystem each include a rectifier which has a DC-DC converter connected upstream of it, the DC-DC converter being coupled to a changeover logic unit on its input side or on its output side. In particular, provision is made for the first subsystem to be connected to a delta circuit in the transformer output and for the second subsystem to be connected to a star circuit in the transformer output.

Abstract: A device (1) for contactless charging of an electrical energy storage (2) of a motor vehicle that has a height adjustable chassis. A primary coil (3) is arranged in a bottom housing (4) on a surface on which the motor vehicle will be parked. The primary coil (3) is connected to an electrical power supply and will induce an alternating electrical voltage in a secondary coil (6) on the vehicle for charging the electrical energy storage (2). The primary coil (3) is connected to the bottom housing (4) by a spring (8, 9) that will compress under the effect of an external compressive force that may occur if the chassis is adjusted too low, thereby avoiding damage to either of the coils (3, 6).

Abstract: A vehicle, in particular an electric vehicle or a hybrid vehicle, having a charging apparatus for charging a vehicle-integrated energy storage cell by means of an external voltage source, wherein the charging apparatus has a charge pump for setting a voltage ratio between an input voltage and an output voltage, wherein the charge pump provides at east two discrete voltage ratios.

Abstract: A power supply unit (1) that is to be connected to different types of power supply networks includes an input (2) to receive AC power from the power supply network and an output (3) for providing power to an electrical device. The electrical device may for example be a computer, a telecom infrastructure device, inductive cooking/heating systems or an on-board charger of an electrical automotive vehicle. The power supply unit (1) includes at least two converters (4) that are connected between the inputs (2) and the output (3) and it further includes a controllable switching arrangement (5). The switching arrangement (5) includes a number of controllable switches (6) to controllably connect the converters (4) in different configurations to the input (2) and therefore also controllably to different supply lines of the power supply network.

Abstract: A method for supplying a number of electric charging stations with electricity, wherein AC voltage provided by an electricity source is transformed into a prescribed AC voltage level by at least one transformer via at least one star winding and at least one delta winding and subsequently routed via AC voltage lines to the number of electric charging stations and converted directly to direct current in respective charging stations from the number of electric charging stations locally by at least two rectifiers of the charging stations.

Abstract: A circuit system for a charging station which is configured to charge an energy store in a vehicle, the circuit system including a transformer with transformer outputs which are DC-isolated from one another, a first subsystem and a second subsystem each being connected to one of the transformer outputs. The first subsystem and the second subsystem each include a rectifier which has a DC-DC converter connected upstream of it, the DC-DC converter being coupled to a changeover logic unit on its input side or on its output side. In particular, provision is made for the first subsystem to be connected to a delta circuit in the transformer output and for the second subsystem to be connected to a star circuit in the transformer output.

Abstract: A method for charging and/or discharging a vehicle battery using a multiphase transformer, in particular using a direct voltage transformer, wherein an input voltage is transformed into an output voltage with the multiphase transformer, wherein the multiphase transformer is operated with a permanently set transmission ratio, and the input voltage is varied in order to adapt the output voltage.