Patent application number | Description | Published |
20120278007 | METHOD FOR CHECKING THE PLAUSIBILITY OF THE TORQUE OF AN ELECTRIC MACHINE AND MACHINE CONTROLLER FOR CONTROLLING AN ELECTRIC MACHINE AND FOR CARRYING OUT THE METHOD - A method for checking the plausibility of a torque of an electric machine, calculated on the basis of a machine model, in which a first value of an electromagnetic power of the electric machine is determined from the calculated torque and a rotational speed of the electric machine. Stator current components and stator phase voltage components are calculated from the stator currents and the stator phase voltages with respect to a reference system, which is fixed in relation to the stator. A second value of the electromagnetic power of the electric machine is determined from the stator current components and the stator phase voltage components. If a deviation of the first value of the electromagnetic power of the electric machine from the second value exceeds a predefined power threshold value, the torque of the electric machine, calculated on the basis of the machine model, is classified as implausible. | 11-01-2012 |
20120306417 | INVERTER SYSTEM FOR OPERATING AN ELECTRIC MOTOR - An inverter system for operating an electric motor includes an input port for providing an electrical voltage, a bridge inverter circuit connected downstream from the input port for generating an electrical alternating voltage for the electric motor based on the electrical voltage. The bridge inverter circuit has at least one half-bridge branch including switching elements configured to be open for transferring the electric motor into a freewheeling state, and a decoupling switching element designed for decoupling the at least one half-bridge branch in the freewheeling state of the electric motor from the input port, in order to suppress a reaction of the freewheeling electric motor on the input port. | 12-06-2012 |
20130085635 | METHOD FOR DETERMINING A POWER LIMITING VALUE FOR AN ELECTRIC MACHINE IN A VEHICLE, COMPUTER PROGRAM AND CONTROL UNIT FOR CONTROLLING AN ELECTRIC MACHINE IN A VEHICLE - In a method for determining a power limiting value for an electric machine in a vehicle, the electric machine being assigned an energy storage device, an intermediate power value is calculated from a maximally allowable current of the energy storage device and an instantaneous voltage. A corrected intermediate power value is determined by adding at least one power loss to the intermediate power value. A first correction value is determined for reducing the absolute value of the corrected intermediate power value if an instantaneous power of the energy storage device is greater than the absolute value of the calculated intermediate power value. The power limiting value is determined by superimposing the first correction value on the corrected intermediate power value. | 04-04-2013 |
20130238898 | Method for Providing Information for a Controller - A method for providing items of information that are provided for the operation of a control device for a motor vehicle and are stored in at least one original data file, in which at least one selected item of information from the at least one original data file is encrypted, and in which at least one selected item of information from the at least one original data file remains unencrypted, so that at least one partially encrypted data file is provided. | 09-12-2013 |
20130258735 | METHOD AND CONTROL UNIT FOR THE PULSE-WIDTH-MODULATED CONTROL OF SWITCHING ELEMENTS OF A PULSE-CONTROLLED INVERTER - A method is described for the pulse-width-modulated control of switching elements of a pulse-controlled inverter, the impulses of successive signal periods of the control signal, in a first control mode, respectively having a uniform start or end time within the signal period, or being situated uniformly centered in the middle of the signal period, and the impulses of successive signal periods of the control signal, in a second control mode, being situated alternately at the beginning of the signal period and at the end of the signal period. | 10-03-2013 |
20130342009 | METHOD AND DEVICE FOR OPERATING A DRIVE TRAIN OF A HYBRID VEHICLE - The invention relates to a method and a device for operating a drive train ( | 12-26-2013 |
20140055068 | METHOD, DEVICE, AND COMPUTER PROGRAM FOR DETERMINING AN OFFSET ANGLE IN AN ELECTRIC MACHINE - The invention relates to a method and device for determining or checking the plausibility of an offset angle between an assumed orientation and an actual orientation of a rotor ( | 02-27-2014 |
20140125268 | METHOD AND DEVICE FOR OPERATING AN ELECTRICAL MACHINE HAVING SEPARATE EXCITATION - 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. | 05-08-2014 |
20140191700 | OPERATING STATE CIRCUIT FOR INVERTER AND METHOD FOR SETTING OPERATING STATES OF AN INVERTER - The invention relates to an operating state circuit for actuating an inverter ( | 07-10-2014 |
20140217817 | CONTROL DEVICE FOR A DC-TO-DC CONVERTER OF AN ELECTRICAL DRIVE SYSTEM, AND A METHOD FOR OPERATING A DC-TO-DC CONVERTER - The invention relates to an electrical drive system of a hybrid vehicle, comprising: a traction battery ( | 08-07-2014 |
20140340017 | METHOD FOR CALIBRATING A MULTIPHASE INVERTER, OPERATING APPARATUS, COMPUTER PROGRAM, AND COMPUTER PROGRAM PRODUCT - The invention relates to a method for calibrating a multiphase, in particular three-phase, inverter ( | 11-20-2014 |
20140361719 | METHOD AND APPARATUS FOR CONTROLLING AN ELECTRIC MACHINE - The invention relates to a method for controlling an electrical machine ( | 12-11-2014 |