US 12,107,481 B2
System including an electric motor and transmission of sensor data
Klaus Stanek, Forst (DE)
Assigned to SEW-EURODRIVE GMBH & CO. KG, Bruchsal (DE)
Appl. No. 17/777,308
Filed by SEW-EURODRIVE GMBH & CO. KG, Bruchsal (DE)
PCT Filed Oct. 28, 2020, PCT No. PCT/EP2020/025480
§ 371(c)(1), (2) Date May 17, 2022,
PCT Pub. No. WO2021/104662, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 102019008147.1 (DE), filed on Nov. 25, 2019.
Prior Publication US 2022/0407382 A1, Dec. 22, 2022
Int. Cl. E05F 15/622 (2015.01); H02K 5/22 (2006.01); H02K 11/35 (2016.01); H02K 3/28 (2006.01)
CPC H02K 5/225 (2013.01) [H02K 11/35 (2016.01); H02K 3/28 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
an electric motor having a terminal box into which a three-phase power cable is arranged and in which a stator winding and/or wire ends of a winding wire of the stator winding of the electric motor is electrically connected to electrical lines of the three-phase power cable;
wherein a data collector is arranged in the terminal box of the electric motor, includes a data storer, and is electrically connected to at least one sensor arranged in and/or on the electric motor;
wherein the data collector includes an electronic circuit adapted to modulate and demodulate voltage portions;
wherein the data storer is adapted to store values of a physical quantity detected by the sensor, which are transmittable via the electrical lines of the three-phase power cable by the modulation to a signal electronics arranged in a switch cabinet and having an electronic circuit adapted to modulate and demodulate further voltage portions; and
wherein the signal electronics arranged in the switch cabinet includes an inverter arranged in the switch cabinet and adapted to be fed from an AC supply network, the signal electronics being adapted to generate pulse-width modulated drive signals for controllable semiconductor switches of the inverter.
 
10. A system, comprising:
an electric motor having a terminal box into which a three-phase power cable is arranged and in which a stator winding and/or wire ends of a winding wire of the stator winding of the electric motor is electrically connected to electrical lines of the three-phase power cable;
wherein a data collector is arranged in the terminal box of the electric motor includes a data storer, and is electrically connected to at least one sensor arranged in and/or on the electric motor;
wherein the data collector includes an electronic circuit adapted to modulate and demodulate voltage portions; and
wherein the modulation and demodulation of the voltage portions takes place in the range of one or more zero crossings of a motor phase current.