US 12,119,774 B2
Planar drive system
Lukas Bentfeld, Delbrück (DE); Rolf Brinkmann, Bad Salzuflen (DE); Patrick Jebramcik, Gütersloh (DE); and Tim Kaulmann, Paderborn (DE)
Assigned to Beckhoff Automation GmbH, Verl (DE)
Filed by Beckhoff Automation GmbH, Verl (DE)
Filed on Nov. 16, 2022, as Appl. No. 17/988,079.
Application 17/988,079 is a continuation of application No. PCT/EP2021/063868, filed on May 25, 2021.
Claims priority of application No. 20176561 (EP), filed on May 26, 2020.
Prior Publication US 2023/0071070 A1, Mar. 9, 2023
Int. Cl. H02K 41/03 (2006.01); H02P 6/00 (2016.01); H02P 6/10 (2006.01); H02P 25/064 (2016.01)
CPC H02P 6/10 (2013.01) [H02P 6/006 (2013.01); H02P 25/064 (2016.02)] 19 Claims
OG exemplary drawing
 
1. A planar drive system comprising:
a stator, and
a rotor;
wherein the stator comprises a plurality of energizable stator conductors,
wherein the rotor comprises a magnet device having at least one rotor magnet,
wherein a magnetic interaction is producible between energized stator conductors of the stator and the magnet device of the rotor in order to drive the rotor,
wherein the stator is configured to carry out energization of the energizable stator conductors such that an alternating magnetic field is generated via the energized stator conductors,
wherein the rotor comprises at least one rotor coil in which an alternating voltage is inducible due to the alternating magnetic field, and
wherein the planar drive system is configured to transmit data from the stator to the rotor, in that the stator is configured to temporarily influence the energization of the energizable stator conductors in order to thereby temporarily cause a change with respect to the alternating voltage inducible in the at least one rotor coil of the rotor.
 
12. A planar drive system comprising:
a stator, and
a rotor;
wherein the stator comprises a plurality of energizable stator conductors,
wherein the rotor comprises a magnet device having at least one rotor magnet,
wherein a magnetic interaction is producible between energized stator conductors of the stator and the magnet device of the rotor in order to drive the rotor,
wherein the stator is configured to carry out energization of the energizable stator conductors by a current control based on a pulse-width modulation, so that the energizable stator conductors are supplied with pulse-width modulated periodic voltage pulses,
wherein, due to the current control based on pulse-width modulation, a ripple current in the energized stator conductors of the stator and thereby an alternating magnetic field are generated,
wherein the rotor comprises at least one rotor coil in which an alternating voltage is inducible due to the alternating magnetic field,
wherein the planar drive system is configured to transmit data from the stator to the rotor, in that the stator is configured to temporarily influence the energization of the energizable stator conductors in order to thereby temporarily cause a change with respect to the alternating voltage inducible in the at least one rotor coil of the rotor, and
wherein the stator comprises an influencing device for temporarily influencing the energization of the energizable stator conductors for this purpose, which is configured to temporarily influence the current control such that a change with respect to the ripple current is caused in the energized stator conductors of the stator.
 
16. A planar drive system comprising:
a stator, and
a rotor;
wherein the stator comprises a plurality of energizable stator conductors,
wherein the rotor comprises a magnet device having at least one rotor magnet,
wherein a magnetic interaction is producible between energized stator conductors of the stator and the magnet device of the rotor in order to drive the rotor,
wherein the stator is configured to carry out the energization of the energizable stator conductors by a current control based on a pulse-width modulation, so that the energizable stator conductors are supplied with pulse-width modulated periodic voltage pulses,
wherein, due to the current control based on pulse-width modulation, a ripple current in the energized stator conductors of the stator and thereby an alternating magnetic field are generated,
wherein the rotor comprises at least one rotor coil in which an alternating voltage is inducible due to the alternating magnetic field,
wherein the planar drive system is configured to transmit data from the stator to the rotor, in that the stator is configured to temporarily influence the energization of the energizable stator conductors in order to thereby temporarily cause a change with respect to the alternating voltage inducible in the at least one rotor coil of the rotor, and
wherein the temporary influence of the energization of the energizable stator conductors comprises temporarily influencing the current control such that a change with respect to the ripple current is caused in the energized stator conductors of the stator.