Abstract: The invention is based on a motor apparatus, in particular on an EC motor apparatus, comprising at least one stator (12a; 12b; 12c) which has at least twelve coils (14a, 14a?, 16a, 16a?, 18a, 18a?, 20a, 20d, 22a, 22b?, 24a, 24a?; 14b, 14b?, 16b, 6b?, 18b, 18b?, 20b, 20b?, 22b, 22b?, 24b, 24b?; 14c, 16c, 18c, 20c, 22c, 24c, 142c, 44c, 146c, 148c, 150c, 152c), and comprising at least one power supply unit (26a; 26b; 26c). It is proposed that coils (14a, 14a?, 16a, 16a?, 18a, 18a?, 20a, 20a?, 22a, 22a?, 24a, 24a?; 14b, 4b?, 16b, 16b?, 18b, 18b?, 20b, 20b?, 22b, 22b?, 24b, 24b?; 14c, 16c, 18c, 20c, 22c, 24c, 42c, 144c, 146c, 148c, 150c, 152c), which directly follow one another in the circumferential direction (36a; 36b; 36c), of the at least one stator (12a; 12b; 12c) are connected to differing phases of the power supply unit (26a; 26b; 26c) in at least one operating state.

Abstract: The invention is based on a motor apparatus, in particular on an EC motor apparatus, comprising at least one stator (12a; 12b; 12c) which has at least twelve coils (14a, 14a?, 16a, 16a?, 18a, 18a?, 20a, 20d, 22a, 22b?, 24a, 24a?; 14b, 14b?, 16b, 6b?, 18b, 18b?, 20b, 20b?, 22b, 22b?, 24b, 24b?; 14c, 16c, 18c, 20c, 22c, 24c, 142c, 44c, 146c, 148c, 150c, 152c), and comprising at least one power supply unit (26a; 26b; 26c). It is proposed that coils (14a, 14a?, 16a, 16a?, 18a, 18a?, 20a, 20a?, 22a, 22a?, 24a, 24a?; 14b, 4b?, 16b, 16b?, 18b, 18W, 20b, 20b?, 22b, 22b?, 24b, 24b?; 14c, 16c, 18c, 20c, 22c, 24c, 42c, 144c, 146c, 148c, 150c, 152c), which directly follow one another in the circumferential direction (36a; 36b; 36c), of the at least one stator (12a; 12b; 12c) are connected to differing phases of the power supply unit (26a; 26b; 26c) in at least one operating state.

Abstract: The invention relates to a method for operating an electronically commutated electric machine (2), having the following steps: Activating a driver circuit (3) in accordance with a commutation schema by switching power semiconductor switches (32, 33); applying a pulse width modulation to the switching of the power semiconductor switches (32, 33); and limiting a pulse control factor of the pulse width modulation to a pulse control factor threshold value.

Abstract: A method for determining a rotor position of a two-phase synchronous machine including two strands. The method is useful for electronically commuting the synchronous machine. The method includes alternately actuating each of the strands in a first actuating time window with an actuating value of positive polarity and in a second actuating time window with an actuating value of negative polarity, where the first and the second actuating time window alternately follow each other. The method further includes applying an actuating value of 0 during a measuring time window which is provided within at least one of the actuating time windows of a strand. The method further includes applying a measuring pulse to the corresponding strand within the measuring time window in order to measure the inductance of the corresponding strand as an indication of the rotor position. In general, the strand inductance is dependent on the rotor position.

Abstract: The invention relates to a method for operating a multi-phase electric machine (2), wherein control voltages (UA, UB, UC) to be applied to phase windings of the electric machine (2) are provided according to a predefined commutation method, wherein, if a sudden change in state as defined by the predefined commutation method is detected from a state in which one of the phase windings is switched off to a state in which the control voltage (UA, UB, UC) is applied to the relevant phase winding, the following steps are carried out: immediate application of a provided intermediate voltage (UZ); and application of a voltage profile produced from a predefined, chronological, constant profile from the intermediate voltage (UZ) to the control voltage (UA, UB, UC) of the relevant phase winding, until the control voltage (UA, UB, UC) to be applied is reached.

Abstract: The invention relates to a method for determining a rotor position of a two-phase synchronous machine (1) comprising two strands (A, B), particularly for electronically commuting the synchronous machine (1). Said method has the following steps: —alternately actuating each of the strands in a first actuating time window with an actuating value of positive polarity and in a second actuating time window with an actuating value of negative polarity, wherein the first and the second actuating time window alternately follow each other; —applying an actuating value of 0 during a measuring time window which is provided within at least one of the actuating time windows of a strand (A, B); —applying a measuring pulse to the corresponding strand (A, B) within the measuring time window in order to measure the inductance of the corresponding strand (A, B) as an indication of the rotor position, said strand inductance being dependent on the rotor position.

Abstract: A method is proposed for supplying electrical power to a DC motor (16) which can be commutated electronically via a semiconductor power output stage (28), preferably a three-phase DC motor, through which a control unit (22) passes current in blocks, corresponding to the signals from a rotor position sensor (20). Current is passed through the motor (16) variably in steps, in such a manner that the magnitude and/or the duration and/or the trigger angle of the current blocks can be varied as a function of the rotation speed and/or of the load, with respect to the profile of the induced voltage (E).

Abstract: A method is proposed for supplying electrical power to a DC motor (16) which can be commutated electronically via a semiconductor power output stage (28), preferably a three-phase DC motor, through which a control unit (22) passes current in blocks, corresponding to the signals from a rotor position sensor (20). Current is passed through the motor (16) variably in steps, in such a manner that the magnitude and/or the duration and/or the trigger angle of the current blocks can be varied as a function of the rotation speed and/or of the load, with respect to the profile of the induced voltage (E).