公开(公告)号：US3889140A

公开(公告)日：1975-06-10

申请号：US36827973

申请日：1973-06-08

申请人： MAX BAERMANN FA

发明人： BAERMANN MAX

IPC分类号： H02K49/02 ,  H02K49/04

CPC分类号： H02K49/046 ,  H02K49/02 ,  H02K49/043

摘要： An induction brake or clutch capable of producing high torques over prolonged periods without excessive heating. The braking currents are generated in low resistance windings and dissipated in external higher resistance members so that the heat does not detrimentally effect the device. Permanent magnets are employed to generate flux and reduce the heat normally generated internally by exciting currents. Poles on a stationary member are arranged in two axially adjacent rings which are relatively circumferentially movable at least one pole pitch so that the torque may be readily adjusted. In a preferred embodiment the rotating member has permanent and electromagnet exciting field poles for the low resistance windings and other windings excited by stationary permanent magnets connected to the electromagnets through a rectifier.

摘要翻译： 一种能够长时间不产生过度加热而产生高转矩的感应制动器或离合器。 制动电流在低电阻绕组中产生，并在外部较高电阻部件中消散，因此热量不会对器件产生不利影响。 采用永久磁铁来产生磁通，并减少由激励电流内部正常产生的热量。 固定构件上的极子布置在两个轴向相邻的环中，其相对周向地可移动至少一个极间距，使得扭矩可以容易地调节。 在优选实施例中，旋转构件具有用于低电阻绕组的永久和电磁激励场极以及通过整流器连接到电磁体的固定永磁体激励的其它绕组。