Synchronous motor control method and device, electronic equipment and storage medium

By dividing the virtual voltage vector on the output voltage vector plane and combining the current prediction model and cost function, the optimal voltage vector is determined to control the permanent magnet linear synchronous motor, the problems of current harmonics and thrust fluctuations in the prior art are solved, and the steady-state control performance of the motor is improved.

CN119652179APending Publication Date: 2025-03-18HUNAN CHONGDE IND TECH
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Patent Information

Application Number
CN202411820373.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

In the prior art, when controlling permanent magnet linear synchronous motors, only one basic voltage vector is usually used, which causes the optimal voltage vector to be not accurately determined, resulting in current harmonics and thrust fluctuations, and reducing the working performance of the motor.

Method used

By dividing the virtual voltage vector on the output voltage vector plane, and combining the current prediction model and cost function, the optimal voltage vector is determined to control the permanent magnet linear synchronous motor.

Benefits of technology

This method can accurately determine the optimal voltage vector from multiple voltage vectors, reduce current harmonics and thrust fluctuations, and improve the steady-state control performance of permanent magnet linear synchronous motors.

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Abstract

The invention discloses a synchronous motor control method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the switching state of an inverter of a permanent magnet linear synchronous motor according to a preset period when the permanent magnet linear synchronous motor is in an operation state, and determining an output voltage vector plane according to the switching state of the inverter; dividing the output voltage vector plane according to preset division times to obtain each divided virtual voltage vector; obtaining operation parameters of the permanent magnet linear synchronous motor, and obtaining an optimal voltage vector according to the operation parameters, each virtual voltage vector and a predetermined current prediction model; and controlling the permanent magnet linear synchronous motor based on the optimal voltage vector. The method has the advantages that the flexibility and adaptability of motor control are improved, and different motor operation states can be better coped with.
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