CPC H02P 6/153 (2016.02) [H02P 6/16 (2013.01)] | 14 Claims |
1. A control device configured to reduce the commutation angle error ε of a three-phase EC motor connected in a y-configuration, the three phases being commutated via a motor control, including a rotor position sensor for sensing the relative angular position of the rotor using the neutral-point potential at the neutral point of the y-configuration as well as a control circuit configured to impose a desired field weakening current component on the motor control for reducing the commutation angle error ε, and a FCC calculating unit operably connected to a measurement obtaining unit and a target value specification for inputting a variable field weakening current component to impose a specific field weakening current component on the motor control for reducing the commutation angle error ε.
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5. A method for reducing the commutation angle error ε of a three-phase EC motor connected via a y-configuration, the three phases being commutated via a motor control, comprising:
sensing a rotor position from the neutral-point potential at the neutral point of the y-configuration of the motor phases;
imposing a field weakening current component for reducing the commutation angle error ε of a commutation device for commutating the EC motor; and
providing a field weakening current component of constant magnitude.
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10. A method for reducing the commutation angle error ε of a three-phase EC motor connected via a y-configuration, the three phases being commutated via a motor control, comprising:
sensing a rotor position from the neutral-point potential at the neutral point of the y-configuration of the motor phases; and
imposing a field weakening current component for reducing the commutation angle error ε of a commutation device for commutating the EC motor,
wherein the field weakening current component is a linear or non-linear function of an operating parameter (Pi) of the EC motor, specifically a function of the torque M or the current of the EC motor.
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