Method for determining a rotor angle of an electric machine in a motor vehicle

• Main Authors: REINEKE BASTIAN, FISCHER WOLFGANG, GRODDE STEFAN, MUELLER JONATHAN
• Format: Patent
• Language: Chinese; English
• Published: 17.07.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to a method for determining a rotor angle (theta) of an electric machine (30) comprising a rotor (32) and a stator (33), with at least one phase winding (U, V, W), a switching charge regulator (LR) being associated with the electric machine (30), which is designed to regulate the electric machine (30) and to supply an electrical accumulator (S) with electrical energy, said charge regulator (LR) having a first switching state (S1) in which the electrical accumulator (S) is supplied with electrical energy, and another switching state (S2) in which the supply of electrical energy to the electrical accumulator (S) is at least partially stopped, the rotor angle (theta) being determined by means of a first determining specification (K1) in the first switching state (S1) andby means of another determining specification (K2) in the other switching state (S2). The invention also relates to a corresponding arithmetic unit designed to carry out the method, and to a computerprogram for carrying out