Electric machine controlling method for e.g. hybrid motor vehicle, involves determining torque values limiting torque set point to maximum and/or minimal values, by using maximum mechanical torque values in motor mode and/or generator mode

摘要

The method involves determining maximum mechanical torque value in motor mode and/or maximum mechanical torque value in generator mode according to charge of a battery (3) and speed of an electric motor. A mechanical torque value limiting a torque set point required by a driver to a maximum value and/or a mechanical torque value limiting the torque set point required by the driver to a minimal value are determined by utilizing the maximum mechanical torque value in the motor mode and/or the maximum mechanical torque value in the generator mode. Independent claims are also included for the following: (1) a computer readable data recording medium comprising a set of instructions to perform a method for controlling an electric machine (2) a device for controlling an electric machine (3) a computer program comprising a set of instructions to perform a method for controlling an electric machine.