知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.011 秒)

    Switched reluctance motor providing rotor position detection at low speeds without a separate rotor shaft position sensor
    1.
    发明授权
    Switched reluctance motor providing rotor position detection at low speeds without a separate rotor shaft position sensor 失效
    开关磁阻电机以低速提供转子位置检测，无需单独的转子轴位置传感器

    公开(公告)号：US5525887A

    公开(公告)日：1996-06-11

    申请号：US404385

    申请日：1995-03-14

    申请人： Thomas G. Van Sistine

    发明人： Thomas G. Van Sistine

    IPC分类号： H02P6/18 ,  H02P25/08 ,  H02P7/00

    CPC分类号： H02P6/185 ,  H02P25/0925

    摘要： A switched reluctance motor includes a rotor mounted for rotation about a rotor shaft axis and a stator surrounding the rotor and having at least three electrically independent stator phases. The motor includes an electronic circuit for selectively energizing the phases in succession with a run current to generate a torque on the rotor and thereby rotate the rotor. The circuit includes switch operating means for selectively operating switches connecting an energy source to the phases. The circuit also includes current sensing means for sensing the amount of current in each of the phases, and timing means for determining the amount of time for the current in each phase to reach a predetermined current level threshold. The circuit also includes pulse means for periodically selectively operating the switch operating means for a limited time to energize the unenergized phases with a seek current without substantially generating torque on the rotor, and comparing means for comparing the amount of time that current in each of the unenergized phases took to reach the predetermined current level threshold. The circuit also includes run means connected to the comparing means and the switch operating means for switching on a selected one of the switches to rotate the rotor.

    摘要翻译： 开关磁阻电动机包括安装成围绕转子轴线旋转的转子和围绕转子的定子，并具有至少三个电独立的定子相。 电动机包括电子电路，用于选择性地使电流相对于运行电流激励以在转子上产生转矩，从而使转子旋转。 该电路包括用于选择性地操作将能量源连接到相的开关操作装置。 电路还包括用于感测每相中的电流量的电流感测装置，以及用于确定每相中的电流达到预定电流电平阈值的时间量的定时装置。 该电路还包括脉冲装置，用于在有限的时间周期性地选择性地操作开关操作装置，以便在没有基本上产生转子转矩的情况下用寻道电流激励未通电相;以及比较装置，用于比较每个 未通电阶段达到预定的电流阈值。 电路还包括连接到比较装置和开关操作装置的运行装置，用于打开选定的一个开关以旋转转子。

    Fluid-heating apparatus, circuit for heating a fluid, and method of operating the same
    3.
    发明授权
    Fluid-heating apparatus, circuit for heating a fluid, and method of operating the same 有权
    流体加热装置，用于加热流体的回路及其操作方法

    公开(公告)号：US07256372B2

    公开(公告)日：2007-08-14

    申请号：US11296745

    申请日：2005-12-07

    申请人： Ray O. Knoeppel ,  Thomas G. Van Sistine ,  Jason W. T. Scott ,  David E. Morris

    发明人： Ray O. Knoeppel ,  Thomas G. Van Sistine ,  Jason W. T. Scott ,  David E. Morris

    IPC分类号： H05B1/02

    CPC分类号： H05B1/0283 ,  F24H9/2021 ,  Y10T307/469

    摘要： A fluid-heating apparatus for heating a fluid and method of operating the same. The fluid-heating apparatus includes a heating element for heating a fluid surrounding the heating element and a control circuit connected to the heating element and connectable to a power source. The control circuit includes a current path from the power source to the heating element back to the power source, a switch connected in the current path, and a current sensor. The method includes initiating a heating state of the fluid-heating apparatus, initiating a non-heating state of the fluid-heating apparatus, applying a voltage to the heating element during the non-heating state, sensing a leakage current of the heating element during the application of the voltage, and determining a degradation of the heating element with the sensed leakage current.

    摘要翻译： 用于加热流体的流体加热装置及其操作方法。 流体加热装置包括用于加热围绕加热元件的流体的加热元件和连接到加热元件并可连接到电源的控制电路。 控制电路包括从电源到加热元件回到电源的电流路径，连接在电流路径中的开关和电流传感器。 该方法包括启动流体加热装置的加热状态，启动流体加热装置的非加热状态，在非加热状态下向加热元件施加电压，在加热状态期间感测加热元件的漏电流 施加电压，并用感测到的漏电流确定加热元件的劣化。

    Switched reluctance motor providing rotor position detection at high speeds without a separate rotor shaft position sensor
    4.
    发明授权
    Switched reluctance motor providing rotor position detection at high speeds without a separate rotor shaft position sensor 失效
    开关磁阻电机提供高速转子位置检测，无需单独的转子轴位置传感器

    公开(公告)号：US5537019A

    公开(公告)日：1996-07-16

    申请号：US403990

    申请日：1995-03-14

    申请人： Thomas G. Van Sistine ,  Ronald P. Bartos ,  William L. Mehlhorn ,  Timothy H. Houle

    发明人： Thomas G. Van Sistine ,  Ronald P. Bartos ,  William L. Mehlhorn ,  Timothy H. Houle

    IPC分类号： H02P6/18 ,  H02P25/08 ,  H02P7/00

    CPC分类号： H02P6/185 ,  H02P25/089 ,  H02P25/0925

    摘要： A switched reluctance motor includes a rotor mounted for rotation about an axis, and having a plurality of rotor poles, and a stator surrounding the rotor and including first, second and third stator phases. The motor also includes energizing means for sequentially energizing the stator phases with an energy source to cause rotation of the rotor, based on rotor position information, the energizing means causing one phase to be energized and then deenergized to near a zero current level prior to a point where the rotor pole breaks away from the stator pole. The energizing means further includes limited current turn on means connected to switch operating means for operating a switch on the one phase to permit flow of limited current through the one phase after it reaches a near zero current level but before the break away point. The motor further includes circuit means connected to the one phase for permitting the limited current to circulate through the one phase; and current sensing means for sensing the amount of current in the one phase and for determining when the current exceeds a predetermined regenerative current threshold at about the break away point, the energizing means being connected to the current sensing means to use this excess regenerative current information at about the break away point for rotor position information.

    摘要翻译： 开关磁阻电动机包括：转子，其安装成绕轴线旋转，并具有多个转子极;以及包围转子并包括第一，第二和第三定子相的定子。 电动机还包括通电装置，用于根据转子位置信息，用能量源依次给定子相施力以引起转子的旋转，激励装置使一相被激励，然后在一个相位之前被断电到零电流水平 转子极与定子极分离的点。 激励装置还包括连接到开关操作装置的限制电流导通装置，用于操作一相上的开关，以允许有限电流在达到接近零电流水平之后但在断开点之前通过一相流动。 电动机还包括连接到一相的电路装置，用于允许有限电流循环通过一相; 以及电流检测装置，用于感测一相中的电流量，并且用于确定在大约分离点处电流何时超过预定再生电流阈值，激励装置连接到电流检测装置以使用该过剩再生电流信息 在转子位置信息的断点处。

    Apparatus for starting a switched reluctance motor
    6.
    发明授权
    Apparatus for starting a switched reluctance motor 失效
    用于启动开关磁阻电机的装置

    公开(公告)号：US5497064A

    公开(公告)日：1996-03-05

    申请号：US404471

    申请日：1995-03-14

    申请人： Thomas G. Van Sistine

    发明人： Thomas G. Van Sistine

    IPC分类号： H02P1/16 ,  H02P6/18 ,  H02P25/08 ,  H02P7/00

    CPC分类号： H02P1/163 ,  H02P25/0925 ,  H02P6/18

    摘要： A switched reluctance electronic motor includes a rotor mounted for rotation about an axis and including a plurality of rotor poles. A stator surrounds the rotor and includes at least three stator phases. The motor also includes a circuit for controlling the motor, the circuit includes a pulse generator for supplying a seek current to each of the phases of the motor without causing rotation of the rotor. The seek currents in the phases each have a respective seek current rise time. The rise time is a function of the proximity of the rotor poles to the respective phases. The circuit includes a series of counters for measuring the amount of time required for the seek current in each phase to reach a predetermined seek current threshold and a comparator for comparing the seek current rise times and for establishing a priority sequence determined by which of the phases has the lowest seek current rise time, the intermediate seek current rise time, and the highest seek current rise time The circuit also includes a run signal generator connected to the comparing structure for energizing a selected one of the phases based upon the priority sequence to cause rotation of the rotor.

    摘要翻译： 开关磁阻电动机包括转子，该转子安装成绕轴线旋转并且包括多个转子极。 定子围绕转子并且包括至少三个定子相。 电动机还包括用于控制电动机的电路，该电路包括脉冲发生器，用于向转子的每个相提供寻道电流而不引起转子旋转。 相中的寻道电流各自具有相应的寻道电流上升时间。 上升时间是转子极接近各相的函数。 该电路包括一系列计数器，用于测量每相中寻找电流达到预定寻找电流阈值所需的时间量;以及比较器，用于比较寻找电流上升时间并用于建立由相中哪一个确定的优先顺序 具有最低的寻道电流上升时间，中间寻找电流上升时间和最高寻道电流上升时间该电路还包括连接到比较结构的运行信号发生器，用于基于优先顺序对所选择的一个相位进行激励以使得 转子旋转。