Rotating electric motor for operating an electric component
AssigneeABB Research Ltd.
InventorsStefan Valdemarsson, Lars Liljestrand, Philip Kjaer
Life of this patent
Estimating the term…
Abstract
A rotating electric motor for operating an electric component. The motor is arranged for an operating movement during a limited predetermined angular motion of the rotor of the motor. An electric drive circuit is arranged for the winding of the motor. The electric circuit exhibits at least one branch including an electric energy bank and a thyristor, which are connected in series with the motor winding. Also, a method for breaking, a use of the motor, and an electric switch provided with the motor.
Claims16
A rotating electric motor for operating an electric component, said rotating electric motor being adapted for an operating movement during a limited predetermined angular motion of the rotor of the rotating electric motor, said rotating electric motor comprising:
- an electric drive circuit for a stator winding of the rotating electric motor, the electric circuit comprising at least one branch comprising an electric energy bank and a thyristor which are connected in series with the stator winding, the at least one branch further comprising a diode connected in parallel with the electric energy bank, wherein the thyristor controls flow of current through the electric energy bank and stator winding, and wherein the electric energy bank comprises a capacitor.
A method for operating an electric component utilizing a rotational movement achieved by a rotating electric motor, the method comprising:
- connecting a rotor of the rotating electric motor to the electric component,
- bring the rotating electric motor to carry out a limited predetermined angular motion by driving a current through a stator winding of the rotating electric motor,
- connecting a stator winding of the rotating electric motor to an electric energy bank comprising a capacitor via a thyristor, and
- applying a first turn-on signal to the thyristor to cause a current to flow through from the electric energy bank through the stator winding of the rotating electric motor, thereby generating a torque on a rotor of the rotating electric motor, and
- applying a second turn-on signal to the thyristor causing current to flow in a same direction as after applying the first turn-on signal, thereby reversing the torque applied on a rotor of the rotating electric motor.
An electric switch, comprising:
- an operating device comprising a rotating electric motor comprising an electric drive circuit for a stator winding of the rotating electric motor, the electric circuit comprising at least one branch comprising an electric energy bank comprising a capacitor and a thyristor which are connected in series with the stator winding, the at least one branch further comprising a diode connected in parallel with the electric energy bank, wherein the thyristor controls flow of current through the electric energy bank and stator winding.
A rotating electric motor for operating an electric component, said rotating electric motor being adapted for an operating movement during a limited predetermined angular motion of the rotor of the rotating electric motor, said rotating electric motor comprising:
- an electric drive circuit for the stator winding of the rotating electric motor, the electric circuit comprising three branches each comprising an electric energy bank and a thyristor which are connected in series with the stator winding, each branch further comprising a diode connected in parallel with the electric energy bank.
A rotating electric motor for operating an electric component, said rotating electric motor being adapted for an operating movement during a limited predetermined angular motion of the rotor of the rotating electric motor, said motor comprising:
- an electric drive circuit for a stator winding of the rotating electric motor, the electric circuit comprising at least one branch comprising an electric energy bank and a thyristor which are connected in series with the stator winding, the at least one branch further comprising a diode connected in parallel with the electric energy bank, wherein the thyristor controls flow of current through the electric energy bank and stator winding,
- wherein the drive circuit comprises three branches connected in parallel, each branch comprising an electric energy bank and a thyristor connected in series with the stator winding, and wherein each branch further comprises a diode connected in parallel with the electric energy bank.
Dependencies are inferred from the claim text.