Wide range speed regulation control method, device and equipment for permanent magnet synchronous motor

Abstract

The invention discloses a wide-range speed regulation control method, device and equipment of a permanent magnet synchronous motor. The method includes: obtaining a query table of d and q axis current reference values ​​of the permanent magnet synchronous motor; selecting a calculation method of the d and q axis current reference values; Calculate the fitting data point element subscript; obtain the fitting data value; obtain the d and q axis current reference values ​​by data fitting; obtain the IO parameter matrix estimation law of the permanent magnet synchronous motor, the voltage reference difference estimation law and the voltage dynamic limit value Estimation law; obtain the estimated value of the IO parameter matrix of the current control cycle; obtain the d, q axis voltage reference difference of the current control cycle; obtain the d, q axis dynamic voltage limit value of the current control cycle; calculate the d, q axis of the current control cycle q-axis voltage reference value; dynamically limit the d and q-axis voltage reference values; control the permanent magnet synchronous motor. This method has the advantages of strong robustness, continuous current operating point, fast current response, high tracking accuracy, and small data storage capacity.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a wide-range speed regulation control method, device and equipment for a permanent magnet synchronous motor based on a data fitting look-up method and a model-free self-adaptive algorithm. Background technique [0002] Permanent magnet synchronous motor is a new type of motor controlled by mechatronics. It has the advantages of high efficiency, excellent torque performance, and small size. It is widely used in many fields such as industrial automation control, aerospace, and machinery. [0003] The permanent magnet synchronous motor is a high-order, nonlinear, and strongly coupled system, which is difficult to accurately model, and its current model has high uncertainty. control performance. To ensure the high dynamic performance and precise tracking of the whole motor system, it is necessary to have a current response with fast tracking speed, small static error and stron...

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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a permanent magnet synchronous motor wide-range speed regulation control method, device and equipment to solve the problems of discontinuous current reference value and slow current response speed in the current field weakening control method of permanent magnet synchronous motor question

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