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US 2022/0139654 A1Published application
Thomson coil with energized coil damping
AssigneeEaton Intelligent Power Limited
InventorsTyler Holp, Brad R. Leccia, Steven Z. Chen, Xin Zhou, Andrew W. Lichauer, Koustubh D. Ashtekar, Michael Slepian
Life of this patent
Estimating the term…
Abstract
Coil-based actuators for use in opening and closing the separable contacts of circuit interrupters provide increased initial velocity for opening strokes and improved damping at the end of opening strokes by utilizing current-based damping and omitting contact springs and contact dampeners.
Claims15
An actuator comprising:
- a shaft;
- a first coil member having an opening through which the shaft passes;
- and
- a first eddy current member having an opening through which the shaft passes and coupled to the shaft at a location disposed above the first coil member,
- wherein the first coil member is structured to be electrically connected to a first current source,
- wherein the first eddy current member is structured to move in response to a change in current supplied to the first coil member, and
- wherein the first eddy current member is structured to stop moving in response to changes in a damping current supplied to the first coil member.
4 more elements
An actuator comprising:
- a shaft;
- a coil member having an opening through which the shaft passes;
- a first eddy current member having an opening through which the shaft passes and coupled to the shaft at a location disposed beneath the coil member;
- and
- a second eddy current member having an opening through which the shaft passes and disposed beneath the first eddy current member,
- wherein the coil member is structured to be electrically connected to a current source,
- wherein the first eddy current member is structured to move in response to changes in a current supplied to the coil member,
- wherein the first eddy current member is structured to generate currents in the second eddy current member, and
- wherein the first eddy current member is structured to stop moving in response to changes in the currents generated in the second eddy current member.
6 more elements
An actuator comprising:
- a shaft;
- a coil member having an opening through which the shaft passes;
- an eddy current member coupled to the shaft at a location disposed beneath the first coil member;
- and
- a conductive open cylinder disposed around the shaft and disposed beneath the first eddy current member,
- wherein the shaft and eddy current member are structured to move in response to changes in a current supplied to the coil member,
- wherein a number of permanent magnets are embedded within the eddy current member, and
- wherein the open cylinder is structured to generate current when a magnetic field produced by the eddy current member is changing.
5 more elements
Dependencies are inferred from the claim text.