Research on Leading Angle Flux-weakening Control Strategy of Permanent Magnet Synchronous Motor Based on Over-modulation Algorithm

To widen the speed range of PMSM, a new governing system combining leading angle flux-weakening control and SVPWM over-modulation is proposed in this paper. The inverter shifts to over-modulation state after the motor reaches the rated speed, thus the inverter fundamental output voltage amplitude is...

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Bibliographic Details
Published in:IEEE Advanced Information Technology, Electronic and Automation Control Conference (IAEAC) (Online) Vol. 5; pp. 1035 - 1041
Main Authors: Qiao, Mingzhong, Peng, Wei, Zhu, Peng, Jiang, Chao, Lu, Xihao
Format: Conference Proceeding
Language:English
Published: IEEE 12.03.2021
Subjects:
Analytical models
flux-weakening control
Inverters
leading angle
over-modulation
Permanent magnet motors
PI control
PMSM
Space vector pulse width modulation
Synchronous motors
Voltage control
ISSN:2689-6621
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Summary:To widen the speed range of PMSM, a new governing system combining leading angle flux-weakening control and SVPWM over-modulation is proposed in this paper. The inverter shifts to over-modulation state after the motor reaches the rated speed, thus the inverter fundamental output voltage amplitude is effectively increased. Then the inverter enters the flux-weakening control state, to maximize the speed range. Leading angle flux-weakening control uses three closed-loop control of speed, current and voltage, these three PI controllers work together to produce a current leading angle and current module, giving a quadrature-axis(q-axis) current and a direct-axis(d-axis) current. Simulation and experimental platform are established to verify the control system, both the simulation and experimental results proved the correctness and feasibility of the theoretical analysis.
ISSN:2689-6621
DOI:10.1109/IAEAC50856.2021.9391018