US 11,799,407 B2
Drive system and method for controlling a synchronous motor having several phases
Kai-Sven Becker, Schwieberdingen (DE); Zeger Bontinck, Muehlacker (DE); Ali Terro, Munich (DE); and Viktor Tihanyi, Budapest (HU)
Assigned to KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH, Munich (DE)
Appl. No. 17/764,754
Filed by Knorr-Bremse Systeme Fuer Nutzfahrzeuge GmbH, Munich (DE)
PCT Filed Oct. 6, 2020, PCT No. PCT/EP2020/077925
§ 371(c)(1), (2) Date Mar. 29, 2022,
PCT Pub. No. WO2021/073934, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 19203433 (EP), filed on Oct. 15, 2019.
Prior Publication US 2022/0360203 A1, Nov. 10, 2022
Int. Cl. H02P 21/14 (2016.01); H02P 29/024 (2016.01)
CPC H02P 21/14 (2013.01) [H02P 29/024 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A drive system, comprising:
a synchronous motor having several phases;
an input interface to input operating parameters to the synchronous motor;
a first device to execute a control algorithm for controlling the synchronous motor during operation without a fault of one of the phases;
a second device to execute a control algorithm for controlling the synchronous motor during operation when there is a determination of a fault of one of the phases;
a switch to switch between the first device and the second device depending on the determination of a fault of one of the phases;
a driver device to provide appropriate operating parameters for the synchronous motor;
sensors to detect a position and a current of the synchronous motor; and
a parameter estimator to execute a parameter estimation algorithm to estimate motor parameters based on the detected position and current of the synchronous motor;
wherein the drive system is configured to provide a zero sequence voltage calculated based on the estimated motor parameters for a neutral connector of the synchronous motor,
wherein the operating parameters, which are input via the input interface, include at least two of a voltage, a current, an electric speed, and a frequency,
wherein the motor parameters include an inductance, a phase resistance, and a permanent magnet flux linkage, and
wherein the input from the input interface is forwarded to the control algorithm for the operation without a fault of one of the phases and to the control algorithm for the operation when there is the determination of a fault of one of the phases, wherein depending on the detection if a fault of one of the phases is present, the input is processed by the first device or the second device, wherein depending on the detection, via the switch, an output of the first device or of the second device is forwarded to the driver device which provides the operating parameters to the synchronous motor, and wherein the sensors provide the operating parameters of the position and the current for the driver device and for the first device and the second device.