A method for controlling an electric motor of a centrifugal separator
AssigneeAlfdex AB
InventorThomas ANDERSSON AGINGER
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Abstract
The present invention provides a method for controlling an electric motor of a centrifugal separator for cleaning gas containing contaminants The centrifugal separator is comprising a stationary casing, enclosing a separation space through which a gas flow is permitted, a rotatable member comprising a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation. The electric motor comprises a stator and a rotor and is arranged for rotating said rotatable member. The method comprises a step of controlling the stator to expose the rotor to a first oscillating magnetic field that increases the temperature of the surroundings of the electric motor without rotating the rotor.
Claims20
A method for controlling an electric-motor of a centrifugal separator for cleaning gas containing contaminants;
- said centrifugal separator comprising
- a stationary casing, enclosing a separation space through which a gas flow is permitted;
- and
- a rotatable member comprising a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation,
- wherein said electric motor comprises a stator and a rotor and is arranged for rotating said rotatable member;
- and
- wherein the method comprises:
- controlling the stator to expose the rotor to a first oscillating magnetic field that increases a temperature of a surroundings of the electric motor without rotating the rotor.
A centrifugal separator for cleaning gas containing contaminants;
- said centrifugal separator comprising
- a stationary casing, enclosing a separation space through which a gas flow is permitted;
- a rotatable member comprising a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation;
- an electric motor comprising stator and rotor and is arranged for rotating said rotatable member;
- and
- a control unit that is operative to control the stator to expose the rotor to a first oscillating magnetic field that increases a temperature of a surroundings of the electric motor without rotating the rotor.
Dependencies are inferred from the claim text.