Predictive Torque Control of Open End Winding PMSM Under Single Phase Fault with Torque Ripple Suppression GuangXi Universsity

Format:

Book

Conference/Event

Author/Creator:

Zhang, Dongdong, author.

Contributor:

Lin, Xiaogang

Mo, Fushen

Conference Name:

SAE 2024 Vehicle Powertrain Diversification Technology Forum (2024-12-06 : Xi'An, China)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2025

Summary:

To enhance the operating performance of the common-bus open-winding permanent magnet synchronous motor under single-phase open-circuit faults, this paper proposes a model predictive torque control strategy with torque ripple suppression. First, the operating principles of the model predictive torque control system for both normal operation and single-phase fault conditions are analyzed. Based on this analysis, the electromagnetic torque controller in the model predictive torque control system is restructured. However, if the conventional space vector modulation strategy used during fault-free operation is continued, the required stator voltage cannot be achieved. Therefore, analyze the phase relationship of the current before and after the fault, derive a new Clark transformation matrix, and then based on the principle of torque invariance that can be generated by the fundamental magnetic flux, derive the coefficients of the Park transformation of the two-phase current. To simplify the inductance matrix into a focusing matrix, a Park transformation matrix for two-phase voltages can be derived. Based on this, derive a new coordinate transformation matrix, and based on the new coordinate transformation matrix, a torque formula considering the third harmonic magnetic flux is derived to suppress torque ripple, and the model predictive torque control method is used to control the motor system. Finally, the proposed fault-tolerant model predictive control strategy is validated using MATLAB/Simulink. Simulation results show that when a single-phase fault occurs in the motor drive system, the proposed strategy can keep the electromagnetic torque and stator magnetic flux ripple relatively small. The research results can provide theoretical basis for the control of common busbar open winding permanent magnet synchronous motors after phase failure

Notes:

Vendor supplied data

Publisher Number:

2025-01-7053

Access Restriction:

Restricted for use by site license