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1. 发明授权

US5747912A Switched reluctance motor 失效
标题翻译：开关磁阻电机
公开(公告)号：US5747912A
公开(公告)日：1998-05-05
申请号：US564584
申请日：1995-11-29
申请人： Masafumi Sakuma , Akemi Ookawa , Takahiro Myouga
发明人： Masafumi Sakuma , Akemi Ookawa , Takahiro Myouga
IPC分类号： H02K19/10 , H02K19/36 , H02K29/03 , H02K1/22
CPC分类号： H02K19/103 , H02K29/03
摘要： A switched reluctance motor has a rotor disposed in an annular stator and formed mainly of a stack of iron plates. The rotor has pole protrusions that face the stator. The pole protrusions have weak magnetic portions provided therein. Each weak magnetic portion has a shape elongated from a leading outer point to a tailing inner point, or a shape that has a base side extending a leading outer point to a tailing inner point and that extends from the base side in the rotational direction and in the inward radial direction. The weak magnetic portions are formed of a material that has a weaker magnetism than the materials forming the other portions of the rotor.
摘要翻译：开关磁阻电动机具有设置在环形定子中并且主要由铁板堆叠形成的转子。转子具有面向定子的极突起。极突起具有设置在其中的弱磁性部分。每个弱磁性部分具有从前部外部点到尾部内部点延伸的形状，或者具有将前部外部点延伸到尾部内部点的基部侧的形状，并且从基部侧沿旋转方向延伸，向内径向。弱磁部由与形成转子的其他部分的材料相比具有较弱磁性的材料形成。

2. 发明授权

US5917263A Switched reluctance motor 失效
标题翻译：开关磁阻电机
公开(公告)号：US5917263A
公开(公告)日：1999-06-29
申请号：US873193
申请日：1997-06-11
申请人： Masafumi Sakuma , Akemi Ookawa
发明人： Masafumi Sakuma , Akemi Ookawa
IPC分类号： H02K5/24 , H02K19/10 , H02K29/03 , H02K37/04 , H02K1/22
CPC分类号： H02K19/103 , H02K29/03
摘要： In a switched reluctance motor, the projected poles of a rotor have feeble-magnetic portions each having a shape that extends radially inward approximately in the rotational direction from a position relative close to a radially outer end of the projected pole and to an end of the projected pole facing in a counter-rotational direction, that is, a direction opposite to the rotational direction, or a shape that has a side extending radially inward approximately in the rotational direction from a position relatively close to a radially outer end and an counter-rotational direction-facing end of the projected pole and that extends radially inward approximately in the counter-rotational direction. The feeble-magnetic portions are weaker in magnetism than the material of the rotor and reduce the magnetic attraction force occurring at the time of switching of coil energization, thereby reducing noises while ensuring generation of a desired amount of torque.
摘要翻译：在开关磁阻电动机中，转子的投射极具有微弱磁性部分，每个磁体部分具有从相对靠近投影极的径向外端的位置向大致沿旋转方向径向向内延伸的形状，投影极面向反转方向即与旋转方向相反的方向，或具有从相对靠近径向外端的位置大致沿旋转方向径向向内延伸的一侧的形状，投影极的面向旋转方向的端部并且大致沿反向旋转方向径向向内延伸。微磁性部分的磁性比转子的材料弱，并且减小了在线圈通电切换时产生的磁吸引力，从而在确保产生期望的扭矩量的同时减少噪声。

3. 发明授权

US5909071A Switched reluctance motor 失效
标题翻译：开关磁阻电机
公开(公告)号：US5909071A
公开(公告)日：1999-06-01
申请号：US845411
申请日：1997-04-25
申请人： Masafumi Sakuma , Akemi Ookawa
发明人： Masafumi Sakuma , Akemi Ookawa
IPC分类号： H02K29/06 , H02K1/24 , H02K1/28 , H02K5/24 , H02K19/10 , H02K29/00 , H02K19/00
CPC分类号： H02K19/103 , H02K1/24 , H02K1/28 , H02K5/24
摘要： A switched reluctance motor includes a stator having a plurality of pairs of opposing stator pole portions which project inward in the diametrical direction and which extend in the axial direction, a rotor rotatably disposed in the stator and having a plurality of rotor pole portions which project outward in the diametrical direction and which extend in the axial direction and axis portion which is rotatably supported on a housing. A plurality of coils are wound on each of the pair of the stator pole portions and an absorbing mechanism is provided for absorbing radial vibrations of the rotor which are generated by a variation of the magnetic attracting force acting on the rotor pole portions.
摘要翻译：一种开关磁阻电动机包括具有多个相对的定子极部的定子，所述多个相对的定子极部沿直径方向向内突出并且沿轴向延伸，转子可旋转地设置在定子中并且具有多个向外突出的转子极部分在径向上延伸并且在轴向方向上延伸，并且轴线部分可旋转地支撑在壳体上。多个线圈缠绕在一对定子极部中的每一个上，并且设置吸收机构以吸收由作用在转子极部上的磁吸引力的变化而产生的转子的径向振动。

4. 发明授权

US5796226A Energization control system for switched reluctance motor 失效
标题翻译：开关磁阻电机励磁控制系统
公开(公告)号：US5796226A
公开(公告)日：1998-08-18
申请号：US714995
申请日：1996-09-17
申请人： Akemi Ookawa , Chiaki Umemura
发明人： Akemi Ookawa , Chiaki Umemura
IPC分类号： H02P6/14 , H02P25/08 , H02P7/00
CPC分类号： H02P25/0925 , H02P6/15
摘要： A system which energizes an SR motor with a three phase sequential and time sharing energization. Coil of respective phase is energized in an interval from an energization ON angle to an energization OFF angle. The OFF angle is advanced in reverse proportion to a speed and a target torque of a rotor of the motor in a high speed range exceeding a threshold Rbase which is an upper limit of a speed range in which a high noises is generated by a tangential oscillation of the rotor. The OFF angle is advanced in proportion to the speed of the rotor and in reverse proportion to the target torque in a low speed range under the threshold Rbase. The advance prevents the generation of noises. The system includes a compensator which corrects an energization level for accommodating an actual acceleration to a target acceleration of the rotor.
摘要翻译：一种以三相顺序和时间分配通电为SR电机通电的系统。各相的线圈从通电导通角到通电OFF角的间隔通电。 OFF角度与超过阈值Rbase的高速范围内的电动机的转速和目标转矩成反比，Rbase是通过切向振荡产生高噪声的速度范围的上限的转子。 OFF角度与转子速度成正比，与阈值Rbase下的低速范围内的目标转矩成反比。提前防止产生噪音。该系统包括补偿器，其补偿用于将实际加速度适应于转子的目标加速度的通电水平。

5. 发明授权

US5589752A Controller for switched reluctance motor 失效
标题翻译：开关磁阻电机控制器
公开(公告)号：US5589752A
公开(公告)日：1996-12-31
申请号：US428367
申请日：1995-04-25
申请人： Shinichiro Iwasaki , Masanori Sugiyama , Chiaki Umemura , Akemi Ookawa , Hisayoshi Takahashi
发明人： Shinichiro Iwasaki , Masanori Sugiyama , Chiaki Umemura , Akemi Ookawa , Hisayoshi Takahashi
IPC分类号： H02K19/10 , H02P25/08 , H02P5/05
CPC分类号： H02K19/10 , H02P25/08
摘要： The generation of oscillations and acoustic noises which result from a rapid change in the magnetic flux upon switching the energization is suppressed, while simultaneously preventing a reduction in the driving efficiency and preventing a resonance from occurring. The current waveform as the current rises or fails is switched in accordance with the rotational speed of the SR motor to minimize a change in the magnetic flux, thus suppressing a reduction in the driving torque. A time interval required for the current to rise or fall is chosen to be greater than one-half the period of the natural frequency of SR motor.
摘要翻译：抑制了在切换通电时由磁通的快速变化引起的振荡和声音噪声的产生，同时防止了驱动效率的降低和防止共振的发生。根据SR电动机的转速来切换电流上升或者失效的电流波形，以最小化磁通的变化，从而抑制驱动转矩的降低。电流上升或下降所需的时间间隔选择为大于SR电机固有频率周期的一半。

6. 发明授权

US5532567A Controller for switched reluctance motor 失效
标题翻译：开关磁阻电机控制器
公开(公告)号：US5532567A
公开(公告)日：1996-07-02
申请号：US411974
申请日：1995-03-28
申请人： Shinichiro Iwasaki , Masanori Sugiyama , Chiaki Umemura , Akemi Ookawa , Hisayoshi Takahashi
发明人： Shinichiro Iwasaki , Masanori Sugiyama , Chiaki Umemura , Akemi Ookawa , Hisayoshi Takahashi
IPC分类号： H02P25/08 , H02P7/05
CPC分类号： H02P25/0925
摘要： Suppression of a peak noise level as may be caused by a resonance when an SR motor is driven is intended. An offset is intentionally provided between a position for a maximum drive efficiency where the energization is to be switched and a position where the energization is actually switched. Such offsets s1, s2, s3, . . . are generated in terms of random numbers, producing a fluctuation in the frequency of the oscillations which result. The fluctuation in the frequency is effective to prevent the occurrence of a resonance. In order to avoid a resulting reduction in the drive efficiency, the magnitude of such offsets are limited to lie within a permissible shift angle, which is in turn determined in terms of the prevailing torque and number of revolutions, by reference to a map.
摘要翻译：希望在SR电动机被驱动时由谐振引起的峰值噪声电平的抑制。在要切换通电的最大驱动效率的位置和实际切换通电的位置之间有意地设置偏移。这样的偏移量s1，s2，s3，...。。。以随机数生成，产生振荡频率的波动。频率的波动对于防止共振的发生是有效的。为了避免由此导致的驱动效率的降低，这种偏移量的大小被限制在参考地图的允许的换档角度之内，其可以根据主要的转矩和转速来确定。

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