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31. 发明公开

EP0414507A1 Improvements in electric reluctance machines 失效
标题翻译： Elektrische Reluktanzmaschinen。
公开(公告)号：EP0414507A1
公开(公告)日：1991-02-27
申请号：EP90309174.2
申请日：1990-08-21
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： Stephenson, John Michael
IPC分类号： H02K19/10 , H02K9/22 , H02K3/52
CPC分类号： H02K19/103 , H02K3/18 , H02K9/22
摘要： An electric reluctance machine has a rotor 12 and a stator core 10 and a set of coils 18 embracing stator poles to energise them. In between the stator poles are spaces in which adjacent lengths of the embracing coils lie. Between adjacent coils sharing a common space the stator core is formed into a projection 22 extending radially towards the rotor. The projection increases the contact area between the coil and the stator. This has the effect of reducing the thermal resistance between the two. Consequently, the coil current can be increased, giving a greater maximum motor output. Furthermore, the overall stiffness of the stator core is increased by the presence of the projections.
摘要翻译：电磁电机具有转子12和定子铁芯10以及一组线圈18，其包围定子极以使它们通电。在定子极之间是包围线圈的相邻长度的空间。在相邻线圈之间共享公共空间的情况下，定子铁芯形成为朝向转子径向延伸的突起22。突起增加了线圈和定子之间的接触面积。这具有降低两者之间的热阻的作用。因此，可以增加线圈电流，给出更大的最大电机输出。此外，通过突起的存在，定子芯的总体刚度增加。

32. 发明公开

EP0736962A3 Controller for a switched reluctance machine 失效
标题翻译：控制器，用于转换磁阻
公开(公告)号：EP0736962A3
公开(公告)日：1997-03-26
申请号：EP96302134.0
申请日：1996-03-27
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： Watkins, Stephen James
IPC分类号： H02P7/05
CPC分类号： H02P25/08 , H02P25/0925
摘要： An electric motor controller is disclosed that controls the torque of a switched reluctance motor by an angle controller that eliminates the need for a look-up table. The angle controller employs edge-triggered monostables to generate a single pulse firing signal which is synchronized with rotor position and whose pulse length varies with torque demand. An angle firing circuit utilizing freewheeling is also disclosed.

33. 发明公开

EP0692865A3 Electric machine controller 失效
标题翻译：用于电机的控制设备
公开(公告)号：EP0692865A3
公开(公告)日：1997-01-02
申请号：EP95303931.0
申请日：1995-06-08
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： Turner, Michael James , Jewell, Alan Richard
IPC分类号： H02P7/05
CPC分类号： H02P25/0925
摘要： A controller for a switched electric machine, especially a switched reluctance motor, takes timing information from a rotor position transducer to generate a switch-off output at a point near maximum phase inductance in a phase inductance cycle. A switch-on signal is generated after a delay but still within the phase inductance cycle. A simple form of single-pulse control is thereby achieved. A comparator is also provided which monitors phase winding current. A pulse generator is actuated by the comparator when the winding current exceeds a reference level and is used to control the motor in a chopping mode at low speeds and is disabled by the comparator at higher speeds when the single-pulse control is used.

34. 发明公开

EP0738034A2 Method and apparatus for reducing winding failures in switched reluctance machines 失效
标题翻译： Gerätund Verfahren zur Reduzierung derWicklungsausfällein geschalteten Reluktanzmaschinen
公开(公告)号：EP0738034A2
公开(公告)日：1996-10-16
申请号：EP96302409.6
申请日：1996-04-03
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： Davis, Rex Mountford
IPC分类号： H02K3/18 , H02K19/10
CPC分类号： H02K3/18 , H02K3/02 , H02K11/26 , H02K11/33 , H02K11/40 , H02K29/00 , Y10T29/49071
摘要： A method and apparatus for reducing winding failures in reluctance machines wherein winding coils for the switched reluctance motor are formed and positioned such that the turn-to-ground capacitance of the portion of the winding coil coupled to an electronic motor controller is reduced. Alternate embodiments are disclosed wherein additional insulation, and capacitive voltage distributors are provided to enable a switched reluctance motor to better handle the voltage stresses produced when high frequency or high dV/dt voltage pulses are provided to the motor.
摘要翻译：用于减少磁阻电机中的绕组故障的方法和装置，其中形成并定位用于开关磁阻电动机的绕组线圈，使得耦合到电子电动机控制器的绕组线圈的部分的接地电容减小。公开了另外的实施例，其中提供额外的绝缘和电容式电压分配器，以使开关磁阻电动机能够更好地处理当向电动机提供高频或高dV / dt电压脉冲时产生的电压应力。

35. 发明公开

EP0713286A2 Method of starting an electric machine 失效
标题翻译： Verfahren zum Anlaufen einer elektrischen Maschine
公开(公告)号：EP0713286A2
公开(公告)日：1996-05-22
申请号：EP95203615.0
申请日：1994-06-07
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： Brown, Geoffrey T.
IPC分类号： H02P1/16
CPC分类号： H02P1/163 , G01D5/2492 , G01P3/481 , H02K29/06 , H02K29/08 , H02K29/10 , H02P6/16 , H02P6/22
摘要： A method is disclosed for starting an electric motor. The motor comprises an encoder having a discate member (18) which rotates with a rotor. The encoder has angularly evenly spaced leading edges but angularly unevenly spaced trailing edges. A code sequence based on the unevenly spaced trailing edges is detected by a sensor (16) which sequence is decodable to derive information on the position of the rotor relative to the motor stator. To start the motor selected stator poles are energised to orientate the rotor into a predetermined position. The encoder then monitors the rotor position. The induced sensor output signal then allows the position of the rotor to be confirmed or corrected and, thereafter, normal running of the motor to be effected.
摘要翻译：公开了一种启动电动机的方法。电动机包括具有与转子一起旋转的盘状构件（18）的编码器。编码器具有角度均匀的前缘，但是具有不均匀的后缘。基于不均匀分离的后沿的代码序列由传感器（16）检测，该序列可解码以得到关于转子相对于电动机定子的位置的信息。为了启动电动机，选定的定子极被通电以将转子定向到预定位置。编码器然后监视转子位置。感应传感器输出信号然后允许确认或校正转子的位置，然后使电动机正常行驶。

36. 发明公开

EP0692865A2 Electric machine controller 失效
标题翻译： Steuerungsgerätfüreine elektrische Maschine
公开(公告)号：EP0692865A2
公开(公告)日：1996-01-17
申请号：EP95303931.0
申请日：1995-06-08
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： Turner, Michael James , Jewell, Alan Richard
IPC分类号： H02P7/05
CPC分类号： H02P25/0925
摘要： A controller for a switched electric machine, especially a switched reluctance motor, takes timing information from a rotor position transducer to generate a switch-off output at a point near maximum phase inductance in a phase inductance cycle. A switch-on signal is generated after a delay but still within the phase inductance cycle. A simple form of single-pulse control is thereby achieved. A comparator is also provided which monitors phase winding current. A pulse generator is actuated by the comparator when the winding current exceeds a reference level and is used to control the motor in a chopping mode at low speeds and is disabled by the comparator at higher speeds when the single-pulse control is used.
摘要翻译：用于开关电机，特别是开关磁阻电动机的控制器从转子位置传感器获取定时信息，以在相电感周期中接近最大相电感的点产生关断输出。在延迟之后产生接通信号，但仍然在相电感周期内。从而实现了单脉冲控制的简单形式。还提供了一个监视相绕组电流的比较器。当绕组电流超过参考电平时，脉冲发生器由比较器驱动，并用于以低速控制斩波模式的电动机，并且当使用单脉冲控制时，由比较器禁止比较器。

37. 发明公开

EP0601818A1 Switched reluctance motors 失效
标题翻译： Geschaltete Reluktanzmotoren。
公开(公告)号：EP0601818A1
公开(公告)日：1994-06-15
申请号：EP93309775.0
申请日：1993-12-06
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： Stephenson, John Michael
IPC分类号： H02K19/06
CPC分类号： H02K1/246 , H02K19/06
摘要： A switched reluctance motor has groups of adjacent poles (16,16') of the same polarity. A starting magnet (20,22) is fitted to one side of one or more of the poles in one or more of the groups. The polarity of the magnet can be the same as that of its host pole. The starting magnet influences the rest position of the rotor when it is not driven so that the rotor will not be in an orientation such that it will not start when the stator poles are energised.
摘要翻译：开关磁阻电机具有相同极性的相邻极点（16,16'）的组。起始磁体（20,22）安装在一个或多个组中的一个或多个极的一侧。磁体的极性可以与其主极的极性相同。起动磁体在不被驱动时影响转子的静止位置，使得转子不会处于取向，使得当定子极被通电时不能起动。

38. 发明公开

EP0805579A3 Demodulator for a pulse width modulated signal 失效
标题翻译：一种用于脉冲宽度调制的信号解调器
公开(公告)号：EP0805579A3
公开(公告)日：1998-09-23
申请号：EP97302618
申请日：1997-04-16
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： SUGDEN DAVID MARK , ROBERTS ANDREW MARTIN
IPC分类号： H04L25/48 , H04L25/49
CPC分类号： H04L25/4902
摘要： A demodulator for a pulse width modulated signal comprises a counter arranged to count in one direction when the PWM signal is "high" and in the opposite direction when the PWM signal is "low" to arrive at a count representative of a duty cycle. As a result, a value representative of the duty ratio of the PWM signal can be obtained from the up/down counter. In a further embodiment, the up/down counter is clocked by the output of a frequency multiplier, the output of the frequency multiplier having a frequency determined by the pulse width modulated signal frequency multiplied by a predetermined factor. The value of the duty ratio of the PWM signal can then be found regardless of the frequency of the PWM signal.

39. 发明公开

EP0739085A3 Compensation for input voltage variation in an electric motor drive 失效
标题翻译：补偿在电动马达的驱动在输入电压的变化
公开(公告)号：EP0739085A3
公开(公告)日：1998-01-21
申请号：EP96302469.0
申请日：1996-04-09
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： Webster, Paul DOnald , Brown, Geoffrey Thomas , Sugden, David Mark
IPC分类号： H02P7/05
CPC分类号： H02P29/026 , Y10S388/902
摘要： The present invention employs digital circuitry to compensate for variations in DC link voltage transmitted to a switched reluctance machine. The digital voltage compensation system of the present invention periodically samples the DC link voltage and actual rotor speed, then supplies the samples in digital form to a microcontroller that derives a compensated speed signal to compensate for changes in DC link voltage.

40. 发明公开

EP0735661A3 Apparatus and method for starting a single-phase variable reluctance motor 失效
标题翻译：装置和方法用于启动单相磁阻电动机
公开(公告)号：EP0735661A3
公开(公告)日：1997-03-26
申请号：EP96301987.2
申请日：1996-03-22
申请人： SWITCHED RELUCTANCE DRIVES LTD
发明人： Fulton, Norman Neilson , Buchan, Ernest James
IPC分类号： H02P1/16
CPC分类号： H02P1/163
摘要： A single-phase switched reluctance motor is disclosed. The motor includes a stator having a plurality of projecting poles and a coaxial rotor. The stator and rotor poles may be formed from laminations of ferromagnetic material. Energizing coils are wound around one or more of the stator poles. When the coils are energized, the rotor develops torque. In one embodiment, the motor includes a motor starting mechanism which sets the rotor into motion before the stator coils are energized so that the rotor is not static when the coils are energized. In another embodiment, the motor includes a rotor positioning mechanism which positions the rotor in a preferred starting position before the stator coils are energized.

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