公开(公告)号：EP2904618A4

公开(公告)日：2016-06-01

申请号：EP13845380

申请日：2013-10-07

申请人： NAT OILWELL VARCO LP

发明人： PARKS DREW PAUL ,  WEINSTEIN ROY

IPC分类号： H01F6/00 ,  H02K55/00

CPC分类号： H01F6/008 ,  H01F6/00 ,  H01F41/00 ,  H01L39/126 ,  H01L39/2419

摘要： A system for activating trapped field magnets in a superconducting material is disclosed. The system includes a superconducting material element and an electromagnet source disposed proximate the superconducting material element. The electromagnet source is configured to produce a magnetic field pulse sufficient to activate the superconducting material element. Furthermore, substantially all of a magnetic field generated by the magnetic field pulse is contained within an area that has smaller physical lateral dimensions than the superconducting material element.

公开(公告)号：EP2707938B1

公开(公告)日：2015-08-26

申请号：EP12715625.5

申请日：2012-03-16

申请人： Siemens PLC.

发明人： BLAKES, Hugh ,  JOHNSTONE, Adam Paul

IPC分类号： H02J15/00 ,  H01F6/00 ,  H01F6/02 ,  H01F6/04

CPC分类号： H01F6/02 ,  H01F6/003 ,  H01F6/008 ,  H01F6/04

公开(公告)号：EP2810312A1

公开(公告)日：2014-12-10

申请号：EP13702372.7

申请日：2013-01-18

申请人： Siemens PLC.

发明人： LAKRIMI, M'Hamed ,  THOMAS, Adrian, Mark

IPC分类号： H01L39/14 ,  H01F6/00 ,  H01H33/00

CPC分类号： H01F6/06 ,  F25D19/006 ,  H01F6/008 ,  H01F6/04 ,  H01H33/004

摘要： A mechanically operating superconducting switch has two superconducting wires, a respective end of each superconducting wire being embedded in a respective block of superconducting material. A mechanical arrangement is provided for driving respective contact surfaces of the blocks into physical contact with each other, and for separating those services.

摘要翻译： 机械操作的超导开关具有两条超导线，每根超导线的相应端部嵌入相应的超导材料块中。 提供了一种用于驱动块的相应接触表面彼此物理接触并用于分离这些服务的机械装置。

公开(公告)号：EP2615615A2

公开(公告)日：2013-07-17

申请号：EP13150093.6

申请日：2013-01-03

申请人： Rolls-Royce plc

发明人： Forsyth, Andrew ,  Jia, Chunjiang ,  Wu, Ding

IPC分类号： H01F6/04

CPC分类号： H01F6/02 ,  F25D29/001 ,  H01F6/008 ,  H01F6/04 ,  H01F6/06 ,  H01F41/048 ,  H02H7/001

摘要： An apparatus 2 comprising a cryogenic chamber 4 and a galvanic input interface 6 to the cryogenic chamber 4 configured to receive a lower amplitude electric current 8. A converter 10 is located within the cryogenic chamber 4 and configured to convert the lower amplitude electric current 8, provided by the galvanic input interface 6, to a higher amplitude electric current 12 for supply to a load 14 within the cryogenic chamber 4. A controller 16 is configured to control the converter 10 and to detect the onset of quench by comparing the duration of the charge/discharge cycle of the convertor with a stored value. The controller 16 may also compare an instantaneous value of load current with a stored value of load current.

摘要翻译： 包括低温室4和低温室4的电流输入接口6的装置2构造成用于接收较低振幅的电流8.转换器10位于低温室4内并被配置为转换低振幅电流8， 由电流输入接口6提供到更高幅度的电流12，以供应到低温室4内的负载14.控制器16被配置为控制转换器10并通过比较第 具有存储值的转换器的充/放电循环。 控制器16还可以将负载电流的瞬时值与存储的负载电流值进行比较。

公开(公告)号：EP1720179A3

公开(公告)日：2008-07-30

申请号：EP06009103.0

申请日：2006-05-03

申请人： Bruker BioSpin AG

发明人： Spreiter, Rolf, Dr. ,  Schauwecker, Robert

IPC分类号： H01F6/00 ,  H03H1/00 ,  H03H7/01

CPC分类号： H01F6/008 ,  G01R33/3815 ,  H01F6/005

摘要： Eine Magnetanordnung mit einem supraleitenden Magnetspulensystem (M), welches ein Arbeitsvolumen und einen ohmschen Widerstand (R) größer oder gleich Null aufweist, und mit einem Strompfad (P), welcher Teile des Magnetspulensystems (M) umfasst, mit Anschlusspunkten (AP1, AP2), einer Speisung (PS, PS') und mit einem elektrischen Netzwerk (D1, D1', D1", D2), wobei die Anschlusspunkte (AP1, AP2) des Strompfades (P) mit netzabgewandten Anschlüssen (AD1, AD2, AD1', AD2') eines elektrischen Netzwerkes (D1, D1', D1'', D2), und die Speisung (PS, PS') mit netzseitigen Anschlüssen (AD3, AD4) des Netzwerks (D1, D1', D1", D2) elektrisch verbunden sind, und wobei das Netzwerk (D1, D1', D1") einen Widerstand (R1) aufweist, ist dadurch gekennzeichnet, dass das Netzwerk (D1, D1', D1") eine Induktivität (L1) umfasst, wobei die Anschlüsse (AD1, AD2) miteinander über den Widerstand (R1) und die Anschlüsse (AD3, AD4) miteinander über den Widerstand (R1) und die Induktivität (L1) verbunden sind. Hierdurch wird eine verbesserte Dämpfung der Strom- und Spannungsschwankungen der Speisung (PS, PS') realisiert, so dass im Strompfad (P) ein ausreichend konstanter der Strom (I 0 ) fließt, dass beispielsweise hochauflösende NMR-und MRI-Verfahren nicht gestört werden.

公开(公告)号：EP1544872A2

公开(公告)日：2005-06-22

申请号：EP04028362.4

申请日：2004-11-30

申请人： Bruker BioSpin AG

发明人： Schauwecker, Robert, Dr. ,  Spreiter, Rolf, Dr.

IPC分类号： H01F6/00

CPC分类号： H01F6/008

摘要： Eine Magnetanordnung mit einem supraleitenden Magnetspulensystem ( M ), welches im Betriebszustand einen Ohmschen Widerstand ( R ) größer oder gleich null aufweist, und mit einer Flusspumpe ( P ), welche mindestens einen supraleitenden Schalter und mindestens zwei supraleitende Sekundärspulen ( M1, M2 ) umfasst, ist dadurch gekennzeichnet, dass mindestens ein supraleitender Strompfad vorhanden ist, in welchem das supraleitende Magnetspulensystem ( M ) oder Teile davon mit mindestens zwei Sekundärspulen ( M1, M2 ) zusammen in Serie geschaltet ist und in welchem mindestens eine Sekundärspule ( M2 ) durch Schließen eines supraleitenden Schalters ( S1 ) supraleitend überbrückt werden kann, und dass mindestens zwei Primärspulen ( C1, C2 ) vorhanden sind, welche unabhängig voneinander mit je einem Strom ( I1, I2 ) gespeist werden können und welche jeweils mit mindestens einer der Sekundärspulen ( M1 , M2 ) induktiv gekoppelt sind. Die Flusspumpe kann gut zur Stabilisierung des Magnetfelds des Magnetspulensystems ( M ) im Betriebszustand über lange Zeit eingesetzt werden.

摘要翻译： 超导主磁体线圈（M）的besteht具有独立的电流（11,12）感应耦合到次级线圈（M1，M2）提供的两个初级线圈（C1，C2）的焊剂泵（P）。 二次线圈连接在与主磁体线圈和电阻器（R）系列。 次级线圈（M2）被并联连接到一个超导开关（S1）。 因此独立claimsoft包括用于操作磁体系统的方法。

公开(公告)号：EP3711072B1

公开(公告)日：2024-07-10

申请号：EP18795523.2

申请日：2018-10-29

IPC分类号： H01F6/06 ,  H01F6/00 ,  G01R33/3815

CPC分类号： G01R33/3815 ,  H01F6/006 ,  H01F6/008 ,  H01F6/06 ,  Y02E40/60

公开(公告)号：EP3362812A1

公开(公告)日：2018-08-22

申请号：EP15906200.9

申请日：2015-10-16

申请人： Synaptive Medical (Barbados) Inc.

发明人： STAINSBY, Jeff ,  HARRIS, Chad ,  PANTHER, Alexander ,  PIRON, Cameron

IPC分类号： G01R33/3815 ,  H01L39/16

CPC分类号： G01R33/3815 ,  G01R33/3804 ,  H01F6/008

摘要： Systems and methods for rapidly ramping the magnetic field of a superconducting magnet, such as a superconducting magnet adapted for use in a magnetic resonance imaging system, are provided. The magnetic field can be rapidly ramped up or down by changing the current density in the superconducting magnet while monitoring and controlling the superconducting magnet's temperature to remain below a transition temperature. A superconducting switch is used to connect the superconducting magnet and a power supply in a connected circuit. The current generated by the power supply is then adjusted to increase or decrease the current density in the superconducting magnet to respectively ramp up or ramp down the magnetic field strength in a controlled manner. The ramp rate at which the magnetic field strength is changed is determined and optimized based on the operating parameters of the superconducting magnet and the current being generated by the power supply.

公开(公告)号：EP2815410B1

公开(公告)日：2015-11-04

申请号：EP13710013.7

申请日：2013-01-14

申请人： Koninklijke Philips N.V. ,  Philips Deutschland GmbH

发明人： OVERWEG, Johannes Adrianus ,  AMTHOR, Thomas Erik ,  FORTHMANN, Peter ,  UHLEMANN, Falk ,  DAVID, Bernd

IPC分类号： H01F6/00 ,  H01F6/06

CPC分类号： G01R33/3642 ,  G01R33/34 ,  G01R33/3815 ,  H01F6/008 ,  H01F6/06 ,  H01F6/065 ,  H01H36/008

摘要： The invention provides for magnetic resonance imaging system (600) comprising a superconducting magnet (100) with a first current lead (108) and a second current lead (110) for connecting to a current ramping system (624). The magnet further comprises a vacuum vessel (104) penetrated by the first current lead and the second current lead. The magnet further comprises a magnet circuit (106) within the vacuum vessel. The magnet circuit has a first magnet circuit connection (132) and a second magnet circuit connection (134). The magnet further comprises a first switch (120) between the first magnet connection and the first current lead and a second switch (122) between the second magnet connection and the second current lead. The magnet further comprises a first current shunt (128) connected across the first switch and a second current shunt (130) connected across the second switch. The magnet further comprises a first rigid coil loop (124) operable to actuate the first switch. The first rigid coil loop forms a portion of the first electrical connection. The magnet further comprises a second rigid coil loop (126) operable to actuate the second switch. The second rigid coil loop forms a portion of the second electrical connection.

公开(公告)号：EP2707938A2

公开(公告)日：2014-03-19

申请号：EP12715625.5

申请日：2012-03-16

申请人： Siemens PLC.

发明人： BLAKES, Hugh ,  JOHNSTONE, Adam Paul

IPC分类号： H02J15/00 ,  H01F6/00 ,  H01F6/02 ,  H01F6/04

CPC分类号： H01F6/02 ,  H01F6/003 ,  H01F6/008 ,  H01F6/04

摘要： A method for maintaining operation of ancillary equipment associated with a superconducting magnet (10) carrying a DC current, comprising the steps of: directing the DC current through a DC to AC converter (40); ramping down the magnitude of the current flowing through the superconducting magnet at a controlled rate, thereby generating a controlled voltage across the controlled impedance; powering the ancillary equipment by the controlled voltage and an associated current; and controlling the ramping rate in order to maintain a required controlled voltage.