Abstract: A vacuum variable capacitor includes a pre-vacuum enclosure for reducing a pressure differential across the bellows. The vacuum force load on the drive system can thereby be reduced, allowing faster movement of the movable electrode, faster capacitance adjustment of the vacuum variable capacitor and longer lifetimes of the device.
Type:
Application
Filed:
May 30, 2013
Publication date:
April 21, 2016
Applicant:
COMET AG
Inventors:
Mark Joachim MILDNER, Roland BIERI, Mike ABRECHT, Walter BIGLER, Douglas BEUERMAN, Jack GILMORE
Abstract: A vacuum variable vapacitor includes a pre-vacuum enclosure for reducing a pressure differential across the bellows, wherein a drive is disposed outside the enclosures of the vacuum variable capacitor. The vacuum force load on the drive system can thereby be reduced, allowing faster movement of the movable electrode, faster capacitance adjustment of the vacuum variable capacitor and longer lifetimes of the device.
Type:
Application
Filed:
May 28, 2014
Publication date:
March 31, 2016
Applicant:
COMET AG
Inventors:
Mark Joachim MILDNER, Roland BIERI, Mike ABRECHT, Walter BIGLER, Douglas BEUERMAN, Jack GILMORE
Abstract: A high-voltage capacitor includes a gas-tight enclosure containing interleaved electrodes. The dielectric of the capacitor is a pressurized gas at a pressure of at least 6 bar, and preferably 10 or 15 bar. In order to withstand this level of internal pressure, the insulating body section of the capacitor may be formed of a high-strength polymeric material.
Type:
Application
Filed:
March 19, 2013
Publication date:
January 7, 2016
Applicant:
COMET AG
Inventors:
Roger TANNER, Walter BIGLER, Mark MILDNER, Mike ABRECHT
Abstract: A variable vacuum capacitor includes two pairs of electrodes ganged together in series such that no moving parts are required to connect electrically to any static pans. Two sets, or gangs, of movable electrodes are connected mechanically and electrically together such that they move together and such that they require no electrical connection to any other part of the device. The ganged arrangement means that the device can be constructed with a smaller diameter, but without significantly increasing the overall length of the device.
Type:
Application
Filed:
February 3, 2012
Publication date:
January 8, 2015
Applicant:
COMET AG
Inventors:
Mike Abrecht, Roger Tanner, Mark Joachim Mildner, Philipp Jäggi, Walter Bigler
Abstract: A vacuum capacitor has at least two electrodes in a vacuum, the electrodes being manufactured from, or coated with, aluminium or an aluminium alloy; and the housing of the vacuum capacitor includes an insulating (e.g., ceramic) part and two or more conducting parts.
Type:
Application
Filed:
June 28, 2010
Publication date:
April 25, 2013
Applicant:
Comet AG
Inventors:
Mike Abrecht, Walter Bigler, Philipp Jäggi, Mark Joachim Mildner
Abstract: A mechanical drive system for a vacuum capacitor is provided and includes a drive screw and a nut, wherein the nut is arranged in a housing of the vacuum capacitor, wherein the drive screw is screwed through the nut, wherein a first electrode is arranged on one side of the drive screw, wherein, by a rotation of the drive screw, the first electrode is movable relative to a second electrode, and wherein the nut is at least partially manufactured out of a plastic material.
Abstract: In a cooling system for a variable vacuum capacitor, a liquid is arranged inside a cooling reservoir, a first part of the reservoir is designed to absorb heat energy from first bellows of the variable vacuum capacitor, the first bellows being responsible for transporting electrical energy to a second electrode of the variable vacuum capacitor, a second part of the reservoir is designed to dissipate heat energy towards a cooling circuit, and heat pipes are arranged between the first part of the reservoir and the second part of the reservoir.
Abstract: A mechanical drive system for a vacuum capacitor is provided and includes a drive screw and a nut, wherein the nut is arranged in a housing of the vacuum capacitor, wherein the drive screw is screwed through the nut, wherein a first electrode is arranged on one side of the drive screw, wherein, by a rotation of the drive screw, the first electrode is movable relative to a second electrode, and wherein the nut is at least partially manufactured out of a plastic material.
Abstract: In a cooling system for a variable vacuum capacitor, a liquid is arranged inside a cooling reservoir, a first part of the reservoir is designed to absorb heat energy from first bellows of the variable vacuum capacitor, the first bellows being responsible for transporting electrical energy to a second electrode of the variable vacuum capacitor, a second part of the reservoir is designed to dissipate heat energy towards a cooling circuit, and heat pipes are arranged between the first part of the reservoir and the second part of the reservoir.
Abstract: The invention relates to a variable capacitor which, due to its particular arrangement of electrodes, enables a significantly higher current flow than generally known constructions having the same or a similar structural shape, said capacitor also has an increased life expectancy and is compatible with existing capacitors in terms of connection. Such variable capacitors can be used in high frequency generators, in matchboxes and in interface networks for industrial high frequency applications, as regulatable filters in high frequency power electronics and in the power part of emission installations.
Type:
Grant
Filed:
October 2, 2002
Date of Patent:
July 19, 2005
Assignee:
Comet AG
Inventors:
Lothar Jahreiss, Bernhard Hug, Walter Bigler, Michael Hamberger