Circuit for the protected power supply of an electrical load
    1.
    发明授权
    Circuit for the protected power supply of an electrical load 失效
    用于电力负载受保护电源的电路

    公开(公告)号:US5953189A

    公开(公告)日:1999-09-14

    申请号:US854164

    申请日:1997-05-09

    CPC分类号: H01H9/542 H01H89/06 H01H9/548

    摘要: A circuit for the protected alternating current power supply of an electrical load, the circuit including, in series, a protective circuit breaker and a bi-directional electronic switch in parallel to which a shunt contactor is connected. An electrical component is connected in series and upstream from the shunt contactor. The electrical component is intended to establish a continuous voltage (V) at the terminals of the electronic switch and its impedance is chosen in such a way that the electronic switch to which command pulses are sent periodically, is made a conductor, when an overload current appears in the circuit and when the contactor is closed.

    摘要翻译: 一种用于电气负载的受保护的交流电源的电路,该电路包括并联的保护断路器和并联的并联接触器的双向电子开关。 电气部件从分流接触器串联连接到上游。 电气部件旨在在电子开关的端子处建立连续电压(V),并且其阻抗被选择为使得指令脉冲周期性地发送的电子开关成为导体,当过载电流 出现在电路中,接触器闭合时。

    Drive circuit for a power transistor
    2.
    发明授权
    Drive circuit for a power transistor 失效
    功率晶体管的驱动电路

    公开(公告)号:US4992924A

    公开(公告)日:1991-02-12

    申请号:US440189

    申请日:1989-11-22

    CPC分类号: H02M7/538 H03K17/04126

    摘要: A power switching circuit (T115, T5) including at least one bipolar transistor stage (T5) and a control circuit for that stage, the control circuit including first bias means for applying forward bias to that stage during first time intervals (t3), and second bias means for applying reverse bias to that stage during second time intervals (t2, t4), the reverse bias being intended to prevent charge accumulating in the transistor while it is subjected to a reverse voltage. The first bias means comprise a first capacitor (C108) and a first switching circuit (D120, T113) serving, outside the first time intervals, for selectively charging the first capacitor by means of a DC voltage soruce, and for discharging the first capacitor into a control input (T115-G) of that stage; and the second bias means comprise a second capacitor (C107) and a second switching circuit (D119, D123, T113, T114) serving, outside the second time intervals, for selectively charging the second capacitor from the voltage supply, and for discharging the second capacitor into the control input.

    摘要翻译: 包括至少一个双极晶体管级(T5)和用于该级的控制电路的电源开关电路(T115,T5),所述控制电路包括用于在第一时间间隔(t3)期间向该级施加正向偏置的第一偏置装置,以及 第二偏置装置,用于在第二时间间隔(t2,t4)期间对该级施加反向偏置,反向偏置旨在防止在经受反向电压时在晶体管中蓄积的电荷。 第一偏置装置包括在第一时间间隔之外服务的第一电容器(C108)和第一开关电路(D120,T113),用于通过直流电压降低对第一电容器进行选择性充电,并且用于将第一电容器放电 该级的控制输入(T115-G); 并且所述第二偏置装置包括在所述第二时间间隔之外用于从所述电压源选择性地对所述第二电容器充电的第二电容器(C107)和第二开关电路(D119,D123,T113,T114),并且用于将所述第二电容器 电容器进入控制输入。

    Frequency converter for the stabilized power supply of asynchronous
motors
    4.
    发明授权
    Frequency converter for the stabilized power supply of asynchronous motors 失效
    用于异步电动机稳定电源的变频器

    公开(公告)号:US4823065A

    公开(公告)日:1989-04-18

    申请号:US161079

    申请日:1988-01-19

    申请人: Alain Gousset

    发明人: Alain Gousset

    摘要: A frequency converter is provided for the power supply of an asychronous motor, comprising:a rectifier bridge (11) connected to a multiphase network and to an intermediate DC circuit (12);an inverter (13) comprising three pairs of static switches (T1-T6) connected in a Graetz bridge; characterized by;a means (21) for reading the current associated with the intermediate circuit (12) and elaborating an image signal of the reverse circuit and delivering an image signal of the current in this circuit;a stabilization control circuit (22) connected to said means (21) and delivering a reverse current excess signal (ST) when the signal (I.sub.d) exceeds an adjustable threshold; anda means (25) for reducing the output voltages of the inverter, and adapted for modifying the modulated pulses, this means being controlled by the output signal (ST) of the stabilization control circuit (22).

    摘要翻译: PCT No.PCT / FR87 / 00166 Sec。 371日期1988年1月19日 102(e)日期1988年1月19日PCT提交1987年5月20日PCT公布。 公开号WO87 / 07455 日期为1987年12月3日。一种用于异步电动机的电源的变频器,包括:连接到多相网络和中间DC电路的整流桥(11); 包括连接在Graetz桥中的三对静态开关(T1-T6)的逆变器(13) 特点是 用于读取与中间电路(12)相关联的电流并且详细描述反向电路的图像信号并在该电路中传送电流的图像信号的装置(21) 当所述信号(Id)超过可调阈值时,连接到所述装置(21)并传送反向电流过量信号(ST)的稳定控制电路(22) 以及用于减小逆变器的输出电压并适于修改调制脉冲的装置(25),该装置由稳定控制电路(22)的输出信号(ST)控制。

    Electronic device for modeling the temperature of a motor
    5.
    发明授权
    Electronic device for modeling the temperature of a motor 有权
    用于建模电机温度的电子设备

    公开(公告)号:US06283631B1

    公开(公告)日:2001-09-04

    申请号:US09212406

    申请日:1998-12-16

    IPC分类号: G01K108

    CPC分类号: H02H6/00 H02H7/08

    摘要: An electronic device for modeling the temperature of a motor by utilizing signals output from current sensors placed on motor power supply phases. Signals from the current sensors are sent to an interface that outputs a voltage which is an image of a summation a ratio of the motor currents sensed by each of the current sensors to a corresponding adjustment current for each of the phases. A calculation circuit utilizes the voltage as an input and outputs a charging current wave stream, the amplitude and the duration of the charging current being proportional to the summation the ratio. An RC type modeling circuit is provided to receive the charging current wave stream and to model the thermal state of the motor based on the charging current wave stream.

    摘要翻译: 一种电子设备,用于通过利用放置在电动机供电阶段的电流传感器输出的信号对电机的温度进行建模。 来自当前传感器的信号被发送到输出电压的接口,该电压是由每个电流传感器感测的电机电流的比值与每个相位的相应调节电流的总和的图像。 计算电路利用电压作为输入,输出充电电流波,充电电流的幅度和持续时间与总和的比例成正比。 提供RC型建模电路以接收充电电流波流并且基于充电电流波流对电动机的热状态建模。

    Power supply circuit of an excitation coil of an electromagnet
    6.
    发明授权
    Power supply circuit of an excitation coil of an electromagnet 失效
    电磁铁励磁线圈的供电电路

    公开(公告)号:US5805405A

    公开(公告)日:1998-09-08

    申请号:US729284

    申请日:1996-10-10

    CPC分类号: H01F7/1833 H01F2029/143

    摘要: A power supply circuit, using direct current or rectified alternating current sources having output and return supply lines (a, b), for a coil of an electromagnet having at least one principal winding (B1) and a secondary winding (B2). The power supply circuit includes a first semiconductor element (T2) having a gate and a source drain path and capable of providing or blocking a supply of current to the secondary winding (B2), the source drain path connected between the secondary winding (B2) and the return supply line (b); and a switching means (10) connected between the primary winding (B1) and the gate of the first semiconductor element (T2). The switching means (10) includes a second semiconductor element (T1) having a gate and a source drain path and capable of keeping the first semiconductor element (T2) from conducting when a voltage between the gate of the second semiconductor element (T1) and the return supply line (b) reaches a threshold voltage (Vs) greater than a value (V1) corresponding to a start of a closing of the electromagnet, the source drain path of the second semiconductor element (T1) connected between the gate of the first semiconductor element (T2) and the return supply line (b), and an adaptation circuit connected between the primary winding (B1) and the gate of the second semiconductor element (T1).

    摘要翻译: 一种用于具有至少一个主绕组(B1)和次级绕组(B2)的电磁体的线圈的具有输出和返回供应线(a,b)的直流或整流交流电源的电源电路。 电源电路包括具有栅极和源极漏极路径并且能够提供或阻断向次级绕组(B2)提供电流的第一半导体元件(T2),连接在次级绕组(B2)之间的源极漏极路径 和返回供应线(b); 以及连接在初级绕组(B1)和第一半导体元件(T2)的栅极之间的开关装置(10)。 开关装置(10)包括具有栅极和源极漏极路径的第二半导体元件(T1),并且能够在第二半导体元件(T1)的栅极与第二半导体元件 返回供给线(b)达到大于与电磁体开始相对应的值(V1)的阈值电压(Vs),连接在电源线的栅极之间的第二半导体元件(T1)的源极漏极路径 第一半导体元件(T2)和返回供给线(b),以及连接在初级绕组(B1)和第二半导体元件(T1)的栅极之间的适配电路。

    Control device for an electromagnet coil
    7.
    发明授权
    Control device for an electromagnet coil 失效
    电磁线圈控制装置

    公开(公告)号:US5999418A

    公开(公告)日:1999-12-07

    申请号:US212482

    申请日:1998-12-16

    摘要: Device designed to control a coil forming part of a solenoid valve, for example in a contactor type device.A switching power supply 14 includes a winding S1 powering a control circuit 15 and another winding S2 placed with a switch T2 at the coil terminals. Switch T2 is controlled by the control circuit to power the coil in the hold phase starting from the switching power supply. This reduces disturbances during the hold phase.

    摘要翻译: 设计用于控制形成电磁阀的一部分的线圈的装置,例如在接触器型装置中。 开关电源14包括为控制电路15供电的绕组S1和在线圈端子处设置有开关T2的另一绕组S2。 开关T2由控制电路控制,以从开关电源开始在保持阶段对线圈供电。 这减少了保持阶段的干扰。

    Contactor-circuit breaker
    8.
    发明授权
    Contactor-circuit breaker 失效
    接触器断路器

    公开(公告)号:US5894395A

    公开(公告)日:1999-04-13

    申请号:US5022

    申请日:1998-01-09

    摘要: Contactor-circuit breaker housing firstly power poles and an electromagnet serving to activate the moving contacts in contactor mode and including a fixed magnetic circuit, a moving magnetic circuit and a coil whose electric supply is controlled by a switch, and secondly at least one current sensor serving to control a releasing electromagnet. The activating electromagnet and the releasing electromagnet are constituted by a single electromagnet whose moving magnetic circuit is a pivoting pallet linked mechanically to the contact-holders of the poles and having a weak moment of inertia. An electric unit is provided for the rapid reduction of the magnetic flux, triggered by an electronic control device associated with the current sensor.

    摘要翻译: 接触器断路器壳体首先是电源极和用于在接触器模式下启动移动触点的电磁体,并且包括固定磁路,运动磁路和线圈,其电源由开关控制,其次至少一个电流传感器 用于控制释放电磁体。 激活电磁体和释放电磁体由单个电磁体构成,其移动磁路是机械地连接到极的接触保持器并具有弱惯性矩的枢转托盘。 提供一个电子单元,用于快速降低由与电流传感器相关联的电子控制装置触发的磁通量。