Electronically commutated motor

An electronically commutated electric motor comprising

• a rotor (28);
• a stator, associated with which is a stator winding arrangement (26) to which electrical current (i1) from an external energy source (47) is applied, during operation, in order to drive the motor (20), the external energy source (47) applying a first voltage (UB) to said winding arrangement (26);
• a digital computer (36) that is configured and adapted to control a normal startup process of the motor (20);
• a PWM generator (84) associated with the digital computer (36), the motor (20) being designed for operation in a parameter range that encompasses at least one variable parameter that can have different values upon startup of the motor (20), the at least one variable parameter being said first voltage,
• the digital computer (36) having associated with it an analog-to-digital converter (85) that is configured to output at least one digital value (ADmeas) which characterizes an instantaneous magnitude of said variable parameter;
• and the digital computer (36) being configured to carry out, during operation, the steps of:
• generating at least one digital value that characterizes the instantaneous magnitude of the variable parameter;
• after the motor (20) is switched on and before said normal startup process begins, during a first time phase (T1), switching on and off the current (i1) delivered to the stator winding arrangement (26) from the external energy source (47) using a pulse duty factor (pwm) derived from the at least one digital value, said pulse duty factor being a function of the first digital value, in order to produce startup of the motor (20), regardless of possibly unusual conditions;
• subsequent to the first time phase (T1), and while the rotor (28) is rotating, initiating a normal startup process of the motor (20).