摘要:
A method for operating an electric machine (24) in short-circuit operation, in particular for use in a motor vehicle, characterized by the steps of: measuring at least a first and a second phase current of the electric machine (24), comparing the measured phase currents with at least one reference value each, and outputting an error message (58) if at least one of the phase currents does not agree with the respective reference value (110, 118).
摘要:
A method for operating an electric machine (24) in short-circuit operation, in particular for use in a motor vehicle, characterized by the steps of: measuring at least a first and a second phase current of the electric machine (24), comparing the measured phase currents with at least one reference value each, and outputting an error message (58) if at least one of the phase currents does not agree with the respective reference value (110, 118).
摘要:
A method and a device for monitoring the insulation resistance in an ungrounded electrical network having a constant-voltage d.c. link and at least one inverter, connected to it, for controlling an n-phase electrical consumer in an n-phase network. A voltage to be monitored, is determined during operation of the consumer, which represents a voltage fluctuation of supply voltage potentials of the constant-voltage d.c. link with respect to a reference potential. In addition, a variable characterizing an electrical frequency of the electrical consumer is determined, particularly an electrical angular speed of the electrical consumer. A first spectral amplitude of the voltage to be monitored at the n-fold electrical frequency of the electrical consumer, is compared to a first reference value, and detects a symmetrical insulation error in the constant-voltage d.c. link or the n-phased network, if the comparison yields a deviation of the first spectral amplitude from the first reference value.
摘要:
Methods and associated devices are described for discharging the high-voltage network, particularly a DC voltage intermediate circuit, in which for discharging the capacitors of the high-voltage network, switching devices are used that lie between the capacitors and at least one precharging resistor and a high-voltage battery, and the switching devices are switches having a specifiable positioning of the switching contacts or switching units or relays or contactors, which are switchable with the aid of a control device. The operation of the switching units takes place in such a way that the at least one precharging resistor is used simultaneously for charging and discharging the DC voltage intermediate circuit.
摘要:
A method for discharging a high-voltage system in a vehicle, the high-voltage system having at least one energy store and a plurality of high-voltage consumers. To discharge the high-voltage system, the electrical energy store is first separated from the rest of the vehicle electrical system, and at least one of the high-voltage consumers is switched on, so that the charge stored within the system drains via the consumers.
摘要:
A charging device for inductively charging a drive battery of an electrically-drivable vehicle includes a primary coil, which can be moved in a first direction towards a secondary coil of the vehicle by a pressurized medium. The primary coil is disposed on a holding device which is at least partially elastic. A method for positioning a primary coil for inductively charging a drive battery of an electrically-drivable vehicle is also provided.
摘要:
A method and a device for operating an electrical machine having separate excitation, especially a synchronous machine. With the aid of a sensor system, a variable characterizing a rotor temperature and/or a stator temperature are/is determined, and an excitation current and stator currents for the electrical machine are specified by a control unit as a function of the variable characterizing the rotor temperature and/or the stator temperature, at least in specifiable operating ranges.
摘要:
Angular adjustment of a camshaft in an internal combustion engine. A vibrational condition of the camshaft is recorded, and an enabling of the camshaft adjustment and/or the use of the instantaneous value of the camshaft position are/is dependent at least temporarily on the recorded vibrational condition.
摘要:
The invention relates to a method for discharging a high voltage network (2) in a vehicle, the high voltage network (2) comprising at least one energy store (1) and a plurality of high voltage consumers (3). For discharging the high voltage network (2), the electrical energy store (1) is first separated from the remaining on-board power supply system (2) and at least one of the high voltage consumers (3) is switched on so that the charge stored in the network is discharged via the consumers (3).
摘要:
A charging device for inductively charging a drive battery of an electrically-drivable vehicle includes a primary coil, which can be moved in a first direction towards a secondary coil of the vehicle by a pressurized medium. The primary coil is disposed on a holding device which is at least partially elastic. A method for positioning a primary coil for inductively charging a drive battery of an electrically-drivable vehicle is also provided.