Ultrafast single actuator electromechanical disconnect switch

Patent metadata

Field	Value
Publication number	US-10340108-B2
Application number	US-201816196455-A
Country	US
Kind code	B2
Filing date	Nov 20, 2018
Priority date	Jan 23, 2014
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

An ultrafast electromechanical switch having a drive mechanism comprising two non-movable contacts connected to electrical feedthroughs, one actuator and one movable contact. The provided ultrafast electrical (e.g., transfer, disconnect, etc.) switch is simple, compact, clean, exhibits ultralow loss, does not require high energy to operate and is capable of being automatically reset.

First claim

What is claimed is:

1. An electrical switch, comprising:
a first electrical feedthrough disposed through an insulating medium, said first electrical feedthrough connected to a first non-movable electrical contact and said first non-movable electrical contact coupled to said insulating medium;
a second electrical feedthrough disposed through the insulating medium, said second electrical feedthrough connected to a second non-movable electrical contact and said second non-movable electrical contact coupled to said insulating medium;
a static gap disposed between said first non-movable contact and said second non-movable contact;
an actuator aligned with said static gap but positioned at a spaced distance away from said first and second non-movable contacts; said actuator being a piezoelectric actuator or a magnetostrictive actuator;
a movable contact directly or indirectly coupled to said actuator and aligned with said static gap, said movable contact contacting said first and second non-movable contacts simultaneously to complete a series between said first and second non-movable contacts, wherein when said actuator is prompted, said movable contact shifts away from said first and second non-movable contacts, such that a variable gap is formed between said movable contact and said first and second non-movable contacts, thus breaking or disconnecting said series between said first and second non-movable contacts, said actuator also releasing contact pressure between said movable contact and said first and second non-movable contacts, wherein when said actuator is idle or unprompted, said movable contact is contacting said first and second non-movable contacts, an electrical circuit is closed within said electrical switch, such that a current flows along a path of travel within said electrical switch across said first non-movable contact, said movable contact and said second non-movable contact.

2. An electrical transfer or disconnect switch as in claim 1 , further comprising:
a switching chamber that encloses at least said insulating medium, said first non-movable contact, said second non-movable contact, said movable contact, and said actuator, said switching chamber containing vacuum or pressurized gas.

3. An electrical transfer or disconnect switch as in claim 1 , further comprising:
said insulation medium further disposed between said actuator and said movable contact to electrically insulate said actuator and said movable contact from each other.

Assignees

• Univ Florida State Res Found Inc

Inventors

• Graber Lukas
• Widener Christopher
• Smith Samantha
• Steurer Michael

Classifications

• H01H33/14

  Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc · CPC title

• H01H33/64

  wherein the break is in gas (vacuum switches H01H33/66) · CPC title

• H01H57/00 Primary

  Electrostrictive relays; Piezoelectric relays · CPC title

• H01H55/00

  Magnetostrictive relays · CPC title

• H01H33/28

  Power arrangements internal to the switch for operating the driving mechanism · CPC title