公开(公告)号：US11286983B2

公开(公告)日：2022-03-29

申请号：US15737542

申请日：2016-05-11

申请人： LAPPEENRANNAN TEKNILLINEN YLIOPISTO

发明人： Rafal Jastrzebski ,  Pekko Jaatinen

IPC分类号： H02P8/38 ,  H02P7/29 ,  F16C32/04 ,  H02P4/00 ,  H02P27/08 ,  H02K11/215 ,  H02P25/16 ,  H02P29/40 ,  H02K11/21 ,  G05B17/02 ,  H02K7/09

摘要： An electrical drive includes an electrical machine, a first converter stage connected to terminals of stator phase-windings of the electrical machine, and a second converter stage connected to intermediate points of the stator phase-windings. A control device determines first component currents and second component currents so that torque is generated in accordance with electrical machine control and magnetic levitation force is directed to a rotor of the electrical machine in accordance with levitation control when portions of the phase-windings between the terminals and the intermediate points carry both the first and second component currents and the other portions of the phase-windings carry the first component currents. The reference currents for the first converter stage are determined based on the first and second component currents, and the reference currents for the second converter stage are determined based on the second component currents.

公开(公告)号：US11221235B2

公开(公告)日：2022-01-11

申请号：US16310172

申请日：2017-06-13

申请人： Lappeenrannan teknillinen yliopisto

发明人： Rafal Jastrzebski ,  Kimmo Tolsa

IPC分类号： G01D5/20 ,  H01F27/28 ,  H01F27/24

摘要： A position sensor for sensing position or motion, includes: a ferrite core, and a sensor coil configured to provide a sensor signal. The sensor coil is implemented on a printed circuit board, and the ferrite core is configured to be fitted into the printed circuit board.