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2. 发明授权

US4698537A Electrical drive systems incorporating variable reluctance motors 失效
标题翻译：配有可变磁阻电机的电气驱动系统
公开(公告)号：US4698537A
公开(公告)日：1987-10-06
申请号：US816867
申请日：1986-01-07
申请人： John V. Byrne , Jeremiah B. O'Dwyer
发明人： John V. Byrne , Jeremiah B. O'Dwyer
IPC分类号： H02K19/10 , H02P1/16 , H02K17/12
CPC分类号： H02K1/246 , H02K19/103 , H02P1/163
摘要： In a two-phase salient pole variable reluctance motor in which the number of stator poles is four or a multiple of four, alternate stator poles carry windings of different phases and each stator pole has an elongated pole shoe, so that the pole tips of each adjacent pair of stator poles are closely spaced. Each rotor pole has an iron depletion layer in the vicinity of its poleface surface which defines a saturating zone, across which the greater part of the magnetomotive force produced by stator windings is developed by uniform flux build-up with rotor angle throughout almost the entire duration of pole overlap. A working stroke approximating a stator pole pitch is achieved. The circumferential extent of each rotor pole is matched to that of the stator poles so that when the rotor poles are fully aligned with a pair of stator poles, each rotor poletip is located in the vicinity of a pair of spaced apart stator pole tips, the relative disposition of the pole tips being such that when both phases of the motor are then simultaneously excited, fringing flux passes through the rotor poletips, this flux being relatively strong for one poletip of each rotor pole and relatively weak for the other poletip. When the rotor poles are initially positioned so that there is partial overlap between rotor and stator poles, the motor is started by a conventional reluctance motor phase sequence, but when the rotor poles are initially fully aligned with stator poles, in which position neither phase acting alone is capable of producing torque, both phases are excited simultaneously, so that torque is applied to the rotor by the flux asymmetry to move the rotor into normal phase energization. The motor is bi-directional and self-starting in both senses from any rotor position.
摘要翻译：在定子极数为4或4的倍数的两相凸极可变磁阻电动机中，交替的定子极承载不同相的绕组，每个定子极具有细长的极靴，使得每个相邻的一对定子极间隔紧密。每个转子极在其极面表面附近具有铁耗尽层，其限定了饱和区域，通过该饱和区域，由定子绕组产生的大部分磁动势由几何整个持续时间内具有转子角度的均匀磁通积分而形成的极重叠。达到接近定子极间距的工作行程。每个转子极的圆周范围与定子极的圆周范围匹配，使得当转子磁极与一对定子极完全对准时，每个转子小齿轮位于一对间隔开的定子极尖附近，极尖的相对布置使得当马达的两相然后同时被激发时，边缘的通量穿过转子叶片，该通量对于每个转子极的一个poletip相对较强并且对于另一个poletip相对较弱。当转子极初始定位使得转子和定子极之间存在部分重叠时，电动机由常规的磁阻电动机相序启动，但是当转子极初始完全与定子极对齐时，单独能够产生扭矩，两相被同时激励，从而通过磁通不对称性将转矩施加到转子以将转子移动到正常相通电。电动机是从任何转子位置的双重感觉和自启动。

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