公开(公告)号：US11621659B2

公开(公告)日：2023-04-04

申请号：US17043297

申请日：2019-04-09

申请人： MOVING MAGNET TECHNOLOGIES

发明人： Geoffroy Petrement ,  Guillaume Callerant

IPC分类号： H02K41/00 ,  H02P8/00 ,  H02P8/16

摘要： A method for controlling a polyphase actuator includes supplying each phase with a periodically varying voltage having a periodic sequence of steps Pi that have a constant duration and an amplitude An,i, where n corresponds to the rank of the phase and i to the rank of the step. The method further includes determining a target position PCi of a rotor of the actuator, in order to define a sinusoidal voltage envelope. The actuator further includes a movable member, a stator equipped with electrical coils and a sensor detecting the mechanical position of the movable member with respect to the stator, as well as a microcontroller. The microcontroller determines, at times Tcapteur, a mechanical position of a mechanical member, the microcontroller calculates, at each of the times Tcapteur, a difference between the mechanical position and a target position PCi corresponding to the step Pi and the microcontroller calculates a coefficient k as a function of the difference. The microcontroller also weights the amplitude of a power supply applied to the phases by a coefficient k in order to supply the phases with weighted amplitude voltages An,i*k.

公开(公告)号：US20230024531A1

公开(公告)日：2023-01-26

申请号：US17757626

申请日：2020-12-18

申请人： Moving Magnet Technologies

发明人： Mathieu Gerber ,  Damien Laforge ,  Guillaume Callerant

IPC分类号： H02K3/28 ,  H02K3/12 ,  H02P25/18 ,  H02P27/08

摘要： An electric machine comprising a first and a second three-phase winding and comprising a stator formed of a cylindrical yoke made of a soft ferromagnetic material extended radially by a set of teeth, a portion of the set of teeth bearing the windings, the windings being distinct from one another, the first three-phase winding being connected in a delta configuration, the second three-phase winding being connected in a star configuration.