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公开(公告)号：US20070195479A1
公开(公告)日：2007-08-23
申请号：US10593611
申请日：2005-03-16
CPC分类号： F16C32/0448 , F16C32/0459
摘要： An active magnetic bearing (100) with autodetection of position, the bearing comprising at least first and second opposing electromagnets (120, 130) forming stators disposed on either side of a ferromagnetic body (110) forming a rotor and held without contact between said electromagnets. The first and second electromagnets (120, 130) each comprising a magnetic circuit (121; 131) essentially constituted by a first ferromagnetic material and co-operating with said ferromagnetic body to define an airgap, together with an excitation coil (122; 132) powered from a power amplifier whose input current is servo-controlled as a function of the position of the ferromagnetic body relative to the magnetic circuits of the first and second electromagnets. The position of the ferromagnetic body (110) being measured from the inductance detected between the two electromagnets (120, 130) in response to simultaneous injection into both opposing electromagnets of a sinusoidal current at a frequency that is greater than the closed loop passband of the system. The magnetic circuit (121; 131) of each electromagnet further includes a portion (124; 134) in the vicinity of the excitation coil (122; 132) that uses a second ferromagnetic material having magnetic permeability that is lower than that of the first material and electrical resistivity that is higher than that of the first material so as to encourage the passage of the high frequency magnetic fields that are generated in the bearing.
摘要翻译： 一种具有自动检测位置的主动磁轴承（100），所述轴承包括至少第一和第二相对电磁体（120,130），所述至少第一和第二相对的电磁体（120,130）形成定子，所述定子设置在形成转子的铁磁体（110）的任一侧上，并且保持在所述电磁体 。 第一和第二电磁体（120,130）各自包括基本上由第一铁磁材料构成并与所述铁磁体配合以限定气隙的磁路（121; 131）以及励磁线圈（122; 132） 由输入电流作为铁磁体相对于第一和第二电磁体的磁路的位置的函数进行伺服控制的功率放大器供电。 铁磁体（110）的位置是根据在两个电磁体（120,130）之间检测到的电感测量的，响应于以大于该闭环通带的频率的正弦电流的两个相对的电磁体同时注入 系统。 每个电磁体的磁路（121; 131）还包括在激励线圈（122; 132）附近的使用具有低于第一材料的导磁率的第二铁磁材料的部分（124; 134） 电阻率高于第一材料的电阻率，以促进在轴承中产生的高频磁场的通过。
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公开(公告)号：US06927517B2
公开(公告)日：2005-08-09
申请号：US10416805
申请日：2001-11-16
IPC分类号： F01D25/16 , F02C7/06 , F04D29/04 , F04D29/056 , F04D29/058 , F16C32/04 , F16C39/06 , H02K3/26 , H02K21/12 , H02K21/22 , H02K7/09 , H02K39/06
CPC分类号： F16C32/0465 , F16C32/0442 , F16C32/0457 , F16C32/0476 , F16C32/0489 , F16C41/004 , F16C2360/42 , F16C2360/44
摘要： The rotary machine comprises a rotary shaft (2) supported by first and second radial magnetic bearings (5, 6) that are electrically controlled by a control device (13), said rotary shaft being fitted with an axial abutment device (100) comprising a rotor formed by a disk (101) secured to the rotary shaft (2) and interposed between first and second stators (102, 104) formed annularly around the rotary shaft and each including at least one annular coil (103; 105) controlled electrically by a system for servo-controlling the axial position of the rotary shaft. The stator (104) of the axial abutment device (100) further comprises a secondary induction circuit (106), and the disk (101) secured to the rotary shaft comprises a primary induction circuit (107) so that during rotation of the shaft, electricity is excited in the secondary induction circuit in order to supply energy to the radial magnetic bearings.
摘要翻译： 旋转机械包括由第一和第二径向磁轴承（5,6）支撑的旋转轴（2），其由控制装置（13）电控制，所述旋转轴装配有轴向邻接装置（100），该轴向邻接装置 转子由固定在旋转轴（2）上的盘（101）形成，并插入第一和第二定子（102,104）之间，环形地围绕旋转轴形成，并且每个包括至少一个环形线圈（103; 105） 用于伺服控制旋转轴的轴向位置的系统。 轴向邻接装置（100）的定子（104）还包括次级感应电路（106），并且固定到旋转轴的盘（101）包括主感应电路（107），使得在轴的旋转期间， 在次级感应电路中激发电力，以向径向磁轴承提供能量。
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公开(公告)号：US07719151B2
公开(公告)日：2010-05-18
申请号：US10593611
申请日：2005-03-16
IPC分类号： H02K7/09
CPC分类号： F16C32/0448 , F16C32/0459
摘要： An active magnetic bearing (100) with autodetection of position, the bearing comprising at least first and second opposing electromagnets (120, 130) forming stators disposed on either side of a ferromagnetic body (110) forming a rotor and held without contact between said electromagnets. The first and second electromagnets (120, 130) each comprising a magnetic circuit (121; 131) essentially constituted by a first ferromagnetic material and co-operating with said ferromagnetic body to define an airgap, together with an excitation coil (122; 132) powered from a power amplifier whose input current is servo-controlled as a function of the position of the ferromagnetic body relative to the magnetic circuits of the first and second electromagnets. The position of the ferromagnetic body (110) being measured from the inductance detected between the two electromagnets (120, 130) in response to simultaneous injection into both opposing electromagnets of a sinusoidal current at a frequency that is greater than the closed loop passband of the system. The magnetic circuit (121; 131) of each electromagnet further includes a portion (124; 134) in the vicinity of the excitation coil (122; 132) that uses a second ferromagnetic material having magnetic permeability that is lower than that of the first material and electrical resistivity that is higher than that of the first material so as to encourage the passage of the high frequency magnetic fields that are generated in the bearing.
摘要翻译： 一种具有自动检测位置的主动磁轴承（100），所述轴承包括至少第一和第二相对电磁体（120,130），所述至少第一和第二相对的电磁体（120,130）形成定子，所述定子设置在形成转子的铁磁体（110）的任一侧上，并且保持在所述电磁体 。 第一和第二电磁体（120,130）各自包括基本上由第一铁磁材料构成并与所述铁磁体配合以限定气隙的磁路（121; 131）以及励磁线圈（122; 132） 由输入电流作为铁磁体相对于第一和第二电磁体的磁路的位置的函数进行伺服控制的功率放大器供电。 铁磁体（110）的位置是根据在两个电磁体（120,130）之间检测到的电感测量的，响应于以大于该闭环通带的频率的正弦电流的两个相对的电磁体同时注入 系统。 每个电磁体的磁路（121; 131）还包括在激励线圈（122; 132）附近的使用具有低于第一材料的导磁率的第二铁磁材料的部分（124; 134） 电阻率高于第一材料的电阻率，以促进在轴承中产生的高频磁场的通过。
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公开(公告)号：US20110176910A1
公开(公告)日：2011-07-21
申请号：US13119831
申请日：2009-09-21
IPC分类号： F01D1/36
CPC分类号： F04D19/042 , F04D19/048 , F04D27/008 , F04D29/058 , F16C32/0442 , F16C32/0451 , F16C32/0489 , F16C2360/45 , H02K7/09
摘要： The flexibly-mounted turbomolecular pump comprises a leaktight casing mounted on a structure via a mechanical damper, a vertical support driven by an electric motor, radial magnetic bearings, an axial magnetic bearing, radial detectors, an axial detector, an emergency mechanical bearing, and a control module comprising power supply circuits and servo-control circuits for the axial and radial magnetic bearings. The servo-control circuits present low stiffness and include filter circuits for defining a limited passband. The control module comprises a comparator unit for detecting abnormally large movements of the rotor from signals delivered by the axial and radial detectors, which movements are greater than predetermined thresholds. The servo-control circuits include a restabilization network and a unit for selectively activating the restabilization network during a predetermined duration after a time at which the crossing of at least one of the predetermined thresholds is detected during a movement of the rotor.
摘要翻译： 柔性安装的涡轮分子泵包括通过机械阻尼器安装在结构上的泄漏外壳，由电动机驱动的垂直支撑件，径向磁轴承，轴向磁轴承，径向检测器，轴向检测器，应急机械轴承和 控制模块包括用于轴向和径向磁轴承的电源电路和伺服控制电路。 伺服控制电路具有低刚度并且包括用于限定有限通带的滤波器电路。 控制模块包括比较器单元，用于根据由轴向和径向检测器传递的信号检测转子的异常大的运动，该运动大于预定阈值。 伺服控制电路包括一个再稳定网络和一个单元，用于在转子运动期间检测到至少一个预定阈值的交叉时间之后的预定持续时间内选择性地启动再稳定网络。
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5.发明授权公开(公告)号：US07397216B2
公开(公告)日：2008-07-08
申请号：US11591233
申请日：2006-11-01
IPC分类号： H02P6/10
CPC分类号： H02P23/26 , G01R31/343
摘要： The present invention provides a circuit for monitoring harmonic distortion in the power supply of a synchronous electrical machine with permanent magnet excitation that comprises a rotor without a damper cage, a stator with first, second, and third windings, a frequency converter, and control circuits for controlling the frequency converter. The monitoring circuit comprises means for obtaining at least one signal representative of the current in the first winding of the stator and at least one signal representative of the current in the second winding of the stator; a circuit for generating synchronizing pulses reflecting the electrical frequency fn of rotation of the rotor relative to the stator; means for determining a signal representative of the current in the third winding of the stator; a set of band-stop notch filters respectively receiving said signals representative of the currents in the first, second, and third windings, and each presenting a center frequency that is servo-controlled to the electrical frequency fn of rotation of the rotor, in order to reject the harmonic corresponding to said electrical frequency fn; a set of measurement circuits for measuring the harmonics that remain in the signals output by each of the band-stop notch filters; and a comparator circuit for continuously comparing the greatest of the values of the signals from the measurement circuits relative to an alarm threshold.
摘要翻译： 本发明提供了一种用于监测具有永磁激励的同步电机的电源中的谐波失真的电路，其包括没有阻尼器的转子，具有第一，第二和第三绕组的定子，变频器和控制电路 用于控制变频器。 监控电路包括用于获得代表定子的第一绕组中的电流的至少一个信号和表示定子的第二绕组中的电流的至少一个信号的装置; 用于产生反映转子相对于定子的旋转的电频率fn的同步脉冲的电路; 用于确定代表定子的第三绕组中的电流的信号的装置; 分别接收表示第一，第二和第三绕组中的电流的所述信号的一组带阻滤波器滤波器，并且每个呈现一个伺服控制到转子的旋转电频率fn的中心频率 以抵消对应于所述电频率fn的谐波; 一组测量电路，用于测量由每个带阻陷波滤波器输出的信号中保持的谐波; 以及用于连续地比较来自测量电路的信号的最大值相对于报警阈值的比较器电路。
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公开(公告)号：US06849979B2
公开(公告)日：2005-02-01
申请号：US10480605
申请日：2002-06-13
申请人： Maurice Brunet , Ulrich Schroeder
发明人： Maurice Brunet , Ulrich Schroeder
CPC分类号： F16C32/0446 , F16C32/0461 , F16C32/048 , G01D5/225
摘要： The active magnetic bearing (1) comprises a stator (2) fitted with electromagnet windings (21) and a first stack of ferromagnetic laminations (22), a rotor (3) fitted with a second stack of ferromagnetic laminations (9), servo-control circuits (10), and position detectors (4, 5, 6). The first stack of ferromagnetic laminations (22) comprises in succession in the axial direction: at least a first sub-set (2a) of laminations (22a) presenting first notches housing electromagnet windings (21); a second sub-set (2b) of laminations (22b) presenting both first notches housing electromagnet windings (21) and second notches housing a radial detector (6); and a third sub-set (2a) of laminations (22a) presenting first notches housing electromagnet windings (21). The first stack of ferromagnetic laminations (22) further comprises fourth and fifth sub-sets (2c) of laminations (22c) at its ends, presenting the same notches as each other and housing respective first and second axial detectors (4, 5).
摘要翻译： 主动磁轴承（1）包括装有电磁铁绕组（21）的定子（2）和铁磁叠片（22）的第一叠层，装配有铁磁叠片（9）的第二叠层的转子（3） 控制电路（10）和位置检测器（4,5,6）。 铁磁叠片（22）的第一堆叠在轴向方向上依次包括：至少第一叠片（22a）的第一子组（2a），其呈现容纳电磁绕组（21）的第一凹口; 叠层（22b）的第二子集（2b），其呈现容纳电磁体绕组（21）的第一凹口和容纳径向探测器（6）的第二凹口; 以及呈现存放电磁铁绕组（21）的第一凹口的叠片（22a）的第三子组（2a）。 铁磁叠片（22）的第一堆叠还在其端部包括叠片（22c）的第四和第五子组（2c），呈现彼此相同的凹口，并容纳相应的第一和第二轴向检测器（4,5）。
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7.发明申请公开(公告)号：US20070096680A1
公开(公告)日：2007-05-03
申请号：US11591233
申请日：2006-11-01
IPC分类号： H02P6/00
CPC分类号： H02P23/26 , G01R31/343
摘要： The present invention provides a circuit for monitoring harmonic distortion in the power supply of a synchronous electrical machine with permanent magnet excitation that comprises a rotor without a damper cage, a stator with first, second, and third windings, a frequency converter, and control circuits for controlling the frequency converter. The monitoring circuit comprises means for obtaining at least one signal representative of the current in the first winding of the stator and at least one signal representative of the current in the second winding of the stator; a circuit for generating synchronizing pulses reflecting the electrical frequency fn of rotation of the rotor relative to the stator; means for determining a signal representative of the current in the third winding of the stator; a set of band-stop notch filters respectively receiving said signals representative of the currents in the first, second, and third windings, and each presenting a center frequency that is servo-controlled to the electrical frequency fn of rotation of the rotor, in order to reject the harmonic corresponding to said electrical frequency fn; a set of measurement circuits for measuring the harmonics that remain in the signals output by each of the band-stop notch filters; and a comparator circuit for continuously comparing the greatest of the values of the signals from the measurement circuits relative to an alarm threshold.
摘要翻译： 本发明提供了一种用于监测具有永磁激励的同步电机的电源中的谐波失真的电路，其包括没有阻尼器的转子，具有第一，第二和第三绕组的定子，变频器和控制电路 用于控制变频器。 监控电路包括用于获得代表定子的第一绕组中的电流的至少一个信号和表示定子的第二绕组中的电流的至少一个信号的装置; 用于产生反映转子相对于定子的旋转的电频率fn的同步脉冲的电路; 用于确定代表定子的第三绕组中的电流的信号的装置; 分别接收表示第一，第二和第三绕组中的电流的所述信号的一组带阻滤波器滤波器，并且每个呈现一个伺服控制到转子的旋转电频率fn的中心频率 以抵消对应于所述电频率fn的谐波; 一组测量电路，用于测量由每个带阻陷波滤波器输出的信号中保持的谐波; 以及用于连续地比较来自测量电路的信号的最大值相对于报警阈值的比较器电路。
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公开(公告)号：US5844339A
公开(公告)日：1998-12-01
申请号：US702497
申请日：1996-08-27
申请人： Ulrich Schroeder , Maurice Brunet
发明人： Ulrich Schroeder , Maurice Brunet
CPC分类号： F16C32/0451 , F16C32/0448
摘要： An active magnetic bearing with auto position-detection includes first and second opposing electromagnets disposed on opposite sides of a ferromagnetic body (1) suspended without contract with the electromagnets. The bearing includes inductive type position detectors which are constituted directly by coils (11, 21) of the first and second electromagnets. A mechanism (14; 24) is provided for injecting a sinusoidal current I.sub.0 sin.omega.t of constant amplitude I.sub.0, of angular frequency .omega., and of identical phase, simultaneously to the inputs of power amplifiers (13, 23) powering the coils (11, 21) of the first and second opposing electromagnets in superposition with the main currents from the servo-control circuits (31, 32). Circuits (41 to 44) serve to extract the position information which determines the magnitude of the main current to be applied by the servo-control circuits (31, 32) to the power amplifiers (13, 23) directly from the voltages u.sub.1, u.sub.2 across the terminals of the excitation coils (11, 21) as measured at the frequency of the sinusoidal current constituting a carrier of angular frequency .omega..
摘要翻译： PCT No.PCT / FR95 / 00231 Sec。 371日期：1996年8月27日 102（e）日期1996年8月27日PCT提交1995年2月28日PCT公布。 出版物WO95 / 23297 日期1995年8月31日具有自动位置检测的主动磁轴承包括设置在铁磁体（1）的相对侧上的第一和第二相对电磁体，悬挂而不与电磁体接合。 轴承包括由第一和第二电磁体的线圈（11,21）直接构成的感应式位置检测器。 提供了一种机构（14; 24），用于同时向驱动线圈（11）的功率放大器（13,23）的输入端注入具有角频率ω的恒定振幅I0的正弦电流I 0sinωt，并且具有相同的相位 ，21）与所述伺服控制电路（31,32）的主电流重叠。 电路（41〜44）用于从电压u1，u2直接提取确定由伺服控制电路（31,32）施加到功率放大器（13,23）的主电流的大小的位置信息 在构成角频率ω的载波的正弦电流的频率处测量的激励线圈（11,21）的端子之间。
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公开(公告)号：US4141604A
公开(公告)日：1979-02-27
申请号：US753282
申请日：1976-12-22
申请人： Helmut Habermann , Maurice Brunet
发明人： Helmut Habermann , Maurice Brunet
CPC分类号： F16C32/048 , F01D25/16 , F04D29/053 , F04D29/058 , F16C32/0402 , F16C32/0444 , F05D2240/515 , Y02T50/671
摘要： A mounting for an elongate horizontal shaft, for example a rotor shaft of a turbine or compressor, comprises two radial end bearings, and at least one intermediate radial bearing. The intermediate bearing is an electromagnetic bearing and is controlled by a detector responsive to the radial position of the shaft. The use of such an intermediate electromagnetic bearing enables relatively long shafts to be mounted satisfactorily.
摘要翻译： 用于细长水平轴（例如涡轮或压缩机的转子轴）的安装件包括两个径向端轴承和至少一个中间径向轴承。 中间轴承是电磁轴承，并由响应于轴的径向位置的检测器控制。 使用这样的中间电磁轴承使得能够令人满意地安装相对较长的轴。
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公开(公告)号：US4114960A
公开(公告)日：1978-09-19
申请号：US764523
申请日：1977-01-31
CPC分类号： F16C32/0446 , G01B7/144 , G01D5/2216 , H02K7/09
摘要： A device for detecting and correcting a radial oscillations of a rotor, particularly a rotor in a magnetic suspension, for the purposes of creating a restoring force to hold the rotor centrally of the stator, wherein several pairs of radial displacement detectors are coupled together and are relatively spaced such that the signals emanating from diametrically opposite detectors of each pair are cancelled out and the signals emanating from adjacent detectors of each pair are averaged to eliminate the effects of variations in the radius of the rotor.
摘要翻译： 用于检测和校正转子，特别是磁悬浮中的转子的径向振荡的装置，用于产生将定子保持在定子中心的恢复力，其中若干对径向位移检测器耦合在一起，并且是 相对间隔使得从每对的径向相反的检测器发出的信号被消除，并且从每对的相邻检测器发出的信号被平均以消除转子半径的变化的影响。
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