Patents by Inventor Christian Sasse
Christian Sasse has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7554431Abstract: An induction device having windings of different phases arranged around magnetic core limbs. The magnetic core limbs are connected by at least one body formed from magnetic particles in a matrix of a dielectric material.Type: GrantFiled: October 19, 2005Date of Patent: June 30, 2009Assignee: ABB ABInventors: Mikael Dahlgren, Udo Fromm, Gunnar Russberg, Christian Sasse, Anders Eriksson, Tomas Jonsson, Svante Soderholm
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Patent number: 7259491Abstract: A rotating asynchronous converter and a generator device having a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC network with a second frequency f2. The converter has a rotor which rotates in dependence of the first and second frequencies f1, f2. The stators each have at least one winding formed of at least one current-carrying conductor, and an insulation system, formed of semiconducting layers each forming an equipotential surface, and a solid insulation between the semiconducting layers.Type: GrantFiled: March 30, 2005Date of Patent: August 21, 2007Assignee: ABB ABInventors: Mats Leijon, Thorsten Shütte, Christian Sasse, Udo Fromm, Stefan G. Johansson
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Patent number: 7088027Abstract: The present invention relates to a rotating asynchronous converter and a generator device. The converter comprises a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC network with a second frequency f2. The converter also comprises a rotor means which rotates in dependence of the first and second frequencies f1, f2. The stators each comprises at least one winding, wherein each winding comprises at least one current-carrying conductor, and each winding comprises an insulation system, which comprises on the one hand at least two semiconducting layers, wherein each layer constitutes substantially an equipotential surface, and on the other hand between them is arranged a solid insulation.Type: GrantFiled: February 7, 2005Date of Patent: August 8, 2006Assignee: ABB ABInventors: Mats Leijon, Thorsten Schütte, Christian Sasse, Udo Fromm
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Publication number: 20060087393Abstract: An induction device having windings of different phases arranged around magnetic core limbs. The magnetic core limbs are connected by at least one body formed from magnetic particles in a matrix of a dielectric material.Type: ApplicationFiled: October 19, 2005Publication date: April 27, 2006Applicant: ABB ABInventors: Mikael Dahlgren, Udo Fromm, Gunnar Russberg, Christian Sasse, Anders Eriksson, Tomas Jonsson, Svante Soderholm
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Patent number: 6995646Abstract: A power or regulating transformer with voltage regulator includes regulating windings made of a flexible conductor having an electric field containing mechanism that forces the electric field due to the current in the winding to be contained within the flexible conductor. Since virtually no electric field is to be found outside the flexible conductor of the regulating winding, the regulating winding may be formed without having to consider the electric field distribution, thus providing for a transformer with a favorable regulating winding design.Type: GrantFiled: February 2, 1998Date of Patent: February 7, 2006Assignee: ABB ABInventors: Udo Fromm, Par Holmberg, Albert Jaksts, Mats Leijon, Christian Sasse, Thorsten Schutte
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Publication number: 20060006755Abstract: A rotating asynchronous converter and a generator device having a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC network with a second frequency f2. The converter has a rotor which rotates in dependence of the first and second frequencies f1, f2. The stators each have at least one winding formed of at least one current-carrying conductor, and an insulation system, formed of semiconducting layers each forming an equipotential surface, and a solid insulation between the semiconducting layers.Type: ApplicationFiled: March 30, 2005Publication date: January 12, 2006Inventors: Mats Leijon, Thorsten Schutte, Christian Sasse, Udo Fromm, Stefan Johansson
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Publication number: 20050127773Abstract: The present invention relates to a rotating asynchronous converter and a generator device. The converter comprises a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC network with a second frequency f2. The converter also comprises a rotor means which rotates in dependence of the first and second frequencies f1, f2. The stators each comprises at least one winding, wherein each winding comprises at least one current-carrying conductor, and each winding comprises an insulation system, which comprises on the one hand at least two semiconducting layers, wherein each layer constitutes substantially an equipotential surface, and on the other hand between them is arranged a solid insulation.Type: ApplicationFiled: February 7, 2005Publication date: June 16, 2005Inventors: Mats Leijon, Thorsten Schutte, Christian Sasse, Udo Fromm
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Patent number: 6906447Abstract: A rotating asynchronous converter for connection of AC network with equal or different frequencies employs a first stator connected to a first AC network with a first frequency and a second stator connected to a second AC network with a second frequency, and a rotor which rotates in response to the first and second frequencies. The converter has at least one winding formed of a cable, including a conductor and a magnetically permeable, electric field confining insulating covering surrounding the conductor.Type: GrantFiled: May 27, 1997Date of Patent: June 14, 2005Assignee: ABB ABInventors: Mats Leijon, Thorsten Schütte, Christian Sasse, Udo Fromm
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Patent number: 6897749Abstract: A superconducting magnetic energy storage (SMES) device including a first coil made of superconducting material, a cooling mechanism for cooling the first coil to superconducting temperatures, a second coil inductively coupled to the first coil for inputting emergy to, and/or outputting energy from, the first coil, and a switch for switching the first coil between a superconducting condition and a non-superconducting condition. The first coil is arranged as a closed loop electric circuit having no connecting device mechanically connected to it for inputting or outputting energy. The switch includes a third coil for the application or removal of a magnetic field for switching the first coil between its non-superconducting and superconducting conditions. A method inputs energy to and/or outputs energy from the first coil and a power supply system utilizes the device and method.Type: GrantFiled: June 4, 2001Date of Patent: May 24, 2005Assignee: ABB ABInventors: Tomas Jonsson, Karin Thorburn, Udo Fromm, Peter Hessling, Arne Gustafsson, Christian Sasse, Pan Min, Mikael Dahlgren
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Patent number: 6885273Abstract: A distributed air gap material for a induction device in power systems for minimizing fringe losses, mechanical losses and noise in the core The distributed air gap material occupies a selected portion of the core and is formed of a finely divided magnetic material in a matrix of a dielectric material particles. The air gap material has a zone of transition in which the permeability values vary within the air gap material.Type: GrantFiled: February 14, 2002Date of Patent: April 26, 2005Assignee: ABB ABInventors: Pan Min, Li Ming, Rongsheng Liu, Mikael Dahlgren, Par Holmberg, Gunnar Russberg, Christian Sasse, Svante Söderholm
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Patent number: 6867674Abstract: A power transformer having at least one high voltage winding and one low voltage winding. Each of the windings includes at least one current-carrying conductor, a first layer having semiconducting properties provided around said conductor, a solid insulating layer provided around said first layer, and a second layer having semiconducting properties provided around said insulating layer. The windings are intermixed such that turns of the high voltage winding are mixed with turns of the low voltage winding.Type: GrantFiled: November 30, 1998Date of Patent: March 15, 2005Assignee: Asea Brown Boveri ABInventors: Thorsten Schutte, Par Holmberg, Jan Brangefalt, Christian Sasse, Peter Carstensen
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Publication number: 20050030140Abstract: An induction device, such as a transformer or reactor, which includes windings of different phases arranged around magnetic core limbs. The magnetic core limbs are connected by at least one body formed from magnetic particles in a matrix of a dielectric material. The device can also be substantially spherical or cylindrical. Regulating windings mounted on inner and outer magnetic core parts may be transferable between the inner and outer magnetic core parts.Type: ApplicationFiled: April 2, 2001Publication date: February 10, 2005Inventors: Mikael Dahlgren, Udo Fromm, Gunnar Russberg, Christian Sasse, Anders Eriksson, Tomas Jonsson, Svante Soderholm
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Patent number: 6801421Abstract: A high power static electromagnetic device with a flux path, a main winding and one or more regulation windings surrounding portions of the flux path. A control device is coupled to the flux path for selectively admitting the flux therein. In an exemplary embodiment, multiple flux paths are selectively turned on and off for including and excluding the regulation windings from the circuit. The windings may be formed of a magnetically permeable, field-confining insulating cable.Type: GrantFiled: September 29, 1998Date of Patent: October 5, 2004Assignee: ABB ABInventors: Christian Sasse, Mats Leijon, Gunnar Russberg, Udo Fromm, Par Holmberg
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Publication number: 20040114403Abstract: A superconducting magnetic energy storage (SMES) device (1) comprising a first coil (2) made of superconducting material, cooling means (3) for cooling the first coil to superconducting temperatures, a second coil (4) inductively coupled to the first coil (2) for inputting energy to, and/or outputting energy from, the first coil (2), and switching means (5) for switching the first coil (2) between a superconducting condition and a non-superconducting condition. The first coil (2) is arranged as a closed loop electric circuit having no connecting means mechanically connected to it for inputting or outputting energy. The switching means (5) comprises a third coil for the application or removal of a magnetic field for switching the first coil (2) between its non-superconducting and superconducting conditions. The invention also relates to a method of inputting energy to and/or outputting energy from the first coil (2) and to a power supply system.Type: ApplicationFiled: August 25, 2003Publication date: June 17, 2004Inventors: Tomas Jonsson, Karin Thorburn, Udo Fromm, Peter Hessling, Arne Gustafsson, Christian Sasse, Pan Min, Mikael Dahlgren
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Publication number: 20040012472Abstract: A high power static electromagnetic device with variable inductance has a magnetic circuit with a flux bearing region. A main winding and at least one control winding surrounds the portions of the flux bearing region. A control device is coupled to the control winding for varying the distribution of flux. The winding is formed of a magnetically permeable, field-confining insulating cable.Type: ApplicationFiled: November 28, 1997Publication date: January 22, 2004Inventors: CHRISTIAN SASSE, THORSTEN SHUTTE, MATS LEIJON, JAN-ANDERS NYGREN, LARS GERTMAR, BERTIL BERGGREN
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Patent number: 6525265Abstract: A high voltage power cable termination with a current lead, a power cable having a first tube and an outer conductor, e.g., a superconductor, whose electrically conducting properties improve at low temperatures, arranged around the first tube and intended in use to be cooled to low temperatures by cryogenic fluid flowing through the first tube, a joint for electrically connecting one end of the current lead to the conductor at one end of the cable at or adjacent to one of the first tube, and a second tube communicating with the first tube at or adjacent to the joint for conveying cryogenic fluid to or from the first tube. The first and the second tube are arranged so that, in use, no cryogenic fluid conveyed by the tubes contacts the conductor or the current lead at the joint. The invention also relates to electrical apparatus, e.g., a high voltage induction device, having such a termination.Type: GrantFiled: July 13, 2000Date of Patent: February 25, 2003Assignee: Asea Brown Boveri ABInventors: Mats Leijon, Christian Sasse
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Publication number: 20030030529Abstract: A distributed air gap material for a induction device in power systems for minimizing fringe losses, mechanical losses and noise in the core The distributed air gap material occupies a selected portion of the core and is formed of a finely divided magnetic material in a matrix of a dielectric material particles. The air gap material has a zone of transition in which the permeability values vary within the air gap material.Type: ApplicationFiled: February 14, 2002Publication date: February 13, 2003Inventors: Pan Min, Li Ming, Rongsheng Liu, Mikael Dahlgren, Par Holmberg, Gunnar Russberg, Christian Sasse, Svante Soderholm
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Publication number: 20010055217Abstract: The present invention relates to a rotating asynchronous converter and a generator device. The converter comprises a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC network with a second frequency f2. The converter also comprises a rotor means which rotates in dependence of the first and second frequencies f1, f2. The stators each comprises at least one winding, wherein each winding comprises at least one current-carrying conductor, and each winding comprises an insulation system, which comprises on the one hand at least two semiconducting layers, wherein each layer constitutes substantially an equipotential surface, and on the other hand between them is arranged a solid insulation.Type: ApplicationFiled: April 10, 1998Publication date: December 27, 2001Inventors: MATS LEIJON, THORSTEN SCHUTTE, CHRISTIAN SASSE, UDO FROMM
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Publication number: 20010019494Abstract: The present invention relates to a DC transformer/reactor comprising a magnetic circuit, wherein the magnetic circuit comprises a magnetic core and at least one winding. The winding comprises at least one current-carrying conductor. Each winding comprises also an insulation system, which comprises on the one hand at least two semiconducting layers, wherein each layer constitutes substantially an equipotential surface, and on the other hand between them is arranged a solid insulation.Type: ApplicationFiled: November 28, 1997Publication date: September 6, 2001Inventors: MATS LEIJON, UDO FROMM, ALBERT JAKSTS, MING LI, CHRISTIAN SASSE
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Patent number: 5715065Abstract: In order to provide a method and device for determination of the albedo or light absorption of a particle of random form, it is proposed that a particle is electrostatically charged and is positioned contact-free in an Ulbricht sphere by means of an electric field; that the particle thus positioned is illuminated with a measuring light beam passing through the Ulbricht sphere with defined intensity, defined beam cross-section and defined intensity distribution over this; that the intensity of the solely particle-based diffuse radiation in the Ulbricht sphere is measured by means of a sensor; that the cross-sectional area of the particle illuminated by the measuring light beam is determined; that the intensity of the solely reference particle-based diffuse radiation is measured in the same manner with a reference particle with known albedo; and that the albedo of the particle is determined from the ratio of the intensities of the particle-based and reference particle-based diffuse radiation taking into accountType: GrantFiled: April 26, 1996Date of Patent: February 3, 1998Assignee: Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V.Inventor: Christian Sasse