公开(公告)号：US5422668A

公开(公告)日：1995-06-06

申请号：US181261

申请日：1994-01-12

Applicant: Pierre Chanteau ,  Bertrand Haffray

Inventor： Pierre Chanteau ,  Bertrand Haffray

IPC: H03K17/00 ,  H03K17/04 ,  H03K17/76 ,  H04H20/78 ,  H04N7/16 ,  H04N21/61 ,  H04N21/647

CPC classification number: H04H20/78

Abstract: The invention relates to the selection of a source from a plurality of sources by means of shunt switches and series switches, which are respectively turned on and mined off, and vice versa. For access to, for example, four sources the device has two intermediate terminals B.sub.1, B.sub.2), one series switch (SE.sub.a, SE.sub.b) is arranged between the user installation and each of the two intermediate terminals, and each of the intermediate terminals is coupled to two sources (IN.sub.1, IN.sub.2 or IN.sub.3, IN.sub.4) by each time one series switch (SE.sub.1, SE.sub.2, SE.sub.3, SE.sub.4). Moreover, each source (IN.sub.1, IN.sub.2, IN.sub.3, IN.sub.4) is a.c. coupled to earth by a matching impedance in series with a shunt switch (Z.sub.1, SH.sub.1, or Z.sub.2, SH.sub.2, or Z.sub.3, SH.sub.3, or Z.sub.4, SH.sub.4). The device is used in CATV.

Abstract translation: 本发明涉及通过分流开关和串联开关从多个源选择源，它们分别被接通和切断，反之亦然。 为了访问例如四个源，设备具有两个中间终端B1，B2），在用户安装和两个中间终端中的每一个之间设置一个串联交换机（SEa，SEb），并且每个中间终端被耦合 每个一个串联开关（SE1，SE2，SE3，SE4）两个源（IN1，IN2或IN3，IN4）。 此外，每个源（IN1，IN2，IN3，IN4）都是a.c. 通过与分流开关（Z1，SH1或Z2，SH2或Z3，SH3或Z4，SH4）串联的匹配阻抗耦合到地。 该设备用于CATV。

公开(公告)号：US20160025518A1

公开(公告)日：2016-01-28

申请号：US14809576

申请日：2015-07-27

Applicant: Bertrand HAFFRAY ,  Olivier LEMARCHAND

Inventor： Bertrand HAFFRAY ,  Olivier LEMARCHAND

IPC: G01D5/20

CPC classification number: F16C32/0446 ,  F16C32/0455 ,  G01D5/2013 ,  G01D5/225

Abstract: A position detection device of active magnetic bearings (AMB's) maintaining the position of a rotating shaft and comprising two sensing inductance coils, the position detection device comprising a programmable digital component for generating a 25 KHz square waveform signal, a current amplifier receiving the 25 KHz square waveform signal and injecting two identical control currents in the two sensing inductance coils, a differential amplifier for amplifying a voltage difference between the resulting voltages in the two sensing inductance coils and, depending on the displacement of the rotating shaft, an analog to digital (A/D) converter for delivering a position value from the voltage difference.

Abstract translation: 一种主动磁轴承（AMB）的位置检测装置，其保持旋转轴的位置并且包括两个感测电感线圈，该位置检测装置包括用于产生25KHz方波信号的可编程数字分量，接收25KHz的电流放大器 在两个感测电感线圈中注入两个相同的控制电流的差分放大器，用于放大两个感测电感线圈中产生的电压之间的电压差的差分放大器，并且根据旋转轴的位移，模拟数字（ A / D）转换器，用于从电压差传递位置值。

公开(公告)号：US20070096680A1

公开(公告)日：2007-05-03

申请号：US11591233

申请日：2006-11-01

Applicant: Ulrich Schroeder ,  Maurice Brunet ,  Bertrand Haffray

Inventor： Ulrich Schroeder ,  Maurice Brunet ,  Bertrand Haffray

IPC: H02P6/00

CPC classification number: H02P23/26 ,  G01R31/343

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US09850945B2

公开(公告)日：2017-12-26

申请号：US14809576

申请日：2015-07-27

Applicant: Bertrand Haffray ,  Olivier Lemarchand

Inventor： Bertrand Haffray ,  Olivier Lemarchand

IPC: F16C32/04 ,  G01D5/20 ,  G01D5/22

CPC classification number: F16C32/0446 ,  F16C32/0455 ,  G01D5/2013 ,  G01D5/225

Abstract: A position detection device of active magnetic bearings (AMB's) maintaining the position of a rotating shaft and comprising two sensing inductance coils, the position detection device comprising a programmable digital component for generating a 25 KHz square waveform signal, a current amplifier receiving the 25 KHz square waveform signal and injecting two identical control currents in the two sensing inductance coils, a differential amplifier for amplifying a voltage difference between the resulting voltages in the two sensing inductance coils and, depending on the displacement of the rotating shaft, an analog to digital (A/D) converter for delivering a position value from the voltage difference.

公开(公告)号：US07397216B2

公开(公告)日：2008-07-08

申请号：US11591233

申请日：2006-11-01

Applicant: Ulrich Schroeder ,  Maurice Brunet ,  Bertrand Haffray

Inventor： Ulrich Schroeder ,  Maurice Brunet ,  Bertrand Haffray

IPC: H02P6/10

CPC classification number: H02P23/26 ,  G01R31/343

Abstract: 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.

Abstract translation: 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。