Abstract:
A vehicle with an N-phase electric motor, with a first onboard electrical subsystem and with a second onboard electrical subsystem, wherein the electric motor includes a rotor and a stator system, and the first onboard electrical subsystem includes an inverter. The stator system is associated with the inverter and the electric motor is operable with an inverter controller according to the principle of field-oriented control such that the stator system is embodied in a star circuit in which the star point can be connected to the second onboard electrical subsystem directly or via a star point switch. The inverter controller includes a current controller and a star point controller, wherein the current controller controls phase currents of the stator system and the star point controller controls a star point current.
Abstract:
A charging device charges energy stores of an electrical machine arrangement for a motor vehicle. The charging device has a primary side with a first connection for connection to a power supply system and a secondary side with a second connection for connection to a second energy store. The charging device has, on the primary side, a third connection for connection to a first energy store and is provided with a control circuit for switching over the load flux such that, via the second connection, energy can be transmitted from the second energy store, via the third connection, to the first energy store.
Abstract:
A current source arrangement includes a first current source having a first terminal and a second terminal; a second current source having a first terminal and a second terminal; and a DC/DC converter having a first terminal pair and a second terminal pair. The DC/DC converter is designed to convert a first direct voltage applied at the first terminal pair into a direct voltage output at the second terminal pair, and/or to convert a first direct voltage applied at the second terminal pair into a direct voltage output at the first terminal pair. The first terminal pair of the DC/DC converter is connected in parallel to the first current source, wherein the second terminal pair of the DC/DC converter is connected in series to the second current source. The second terminal pair of the DC/DC converter and the second current source are connected in parallel to the first current source.
Abstract:
A switching arrangement includes a switching unit, which is designed to couple at least one phase of an electric machine of a vehicle in different configurations to a DC onboard power voltage of the vehicle in order to generate an AC phase voltage for the phase of the electric machine. In addition, the switching arrangement has a coil and circuit breakers, wherein the circuit breakers are designed to couple the switching unit via the coil to a DC charging voltage or to decouple same from the charging voltage. The switching arrangement also has a controller which is designed to operate the switching arrangement in a converter mode or in a power inverter mode.
Abstract:
A vehicle is configured with an N-phase electric machine, a first on-board electrical sub-system and a second on-board electrical sub-system. The electric machine includes a rotor and a stator system, wherein the first onboard electrical sub-system includes an inverter and the stator system is linked to the inverter. The electric machine can be operated using an inverter controller on the principle of a field-oriented control system, so that the electric machine is linked to a control unit, wherein the inverter can be controlled by the control unit, and the control unit uses a phased activation method to control the inverter.
Abstract:
An on-board power system has a three-phase motor having a first and at least a second at least three-phase winding, a first and a second electric component energy on-board power system, as well as a first and a second actuator element, which are each electrically connected to one of the windings and one of the electric component energy on-board power systems. In order to transfer energy between the first and second electric component energy on-board power systems, the first actuator is actuated to generate a voltage in the first at least three-phase winding, such that a voltage is induced in the second at least three-phase winding, a result of which is to transfer energy between the first and the second partial-energy on-board power system, and wherein the generated voltage in the first at least three-phase winding is an AC voltage with voltage vectors oriented to contribute to the fact that substantially no torque is generated in the rotor by the voltage generated for the energy transfer in the first winding.