Permanent magnet synchronous motor parameter correction method and device based on model reference

Abstract

The invention provides a permanent magnet synchronous motor parameter correction method and device based on model reference, and the method comprises the steps: obtaining a first dynamic parameter table, and constructing an adjustable model according to the first dynamic parameter table; obtaining a rack calibration table, and constructing a reference model according to the rack calibration table; selecting n working points, determining a first adjustment precision parameter and a first combination parameter, and obtaining a first parameter of the adjustable model and a second parameter of the reference model; based on the first parameter, the second parameter, the first combination parameter and the first adjustment precision parameter, obtaining adjustment amount information and adjustment ratio information of each adjustable parameter in the first dynamic parameter table; and determining an adjustment parameter according to an optimization adjustment rule through the adjustment amount information and the adjustment ratio information, and performing optimization according to the adjustment parameter. The technical problems of low efficiency and low precision in the parameter correction process of the permanent magnet synchronous motor in the prior art are solved.

Description

technical field [0001] The invention relates to the related field of permanent magnet synchronous motors of electric vehicles, in particular to a method and device for parameter correction of permanent magnet synchronous motors based on model reference. Background technique [0002] With the popularity of electric vehicles and the advantages of permanent magnet synchronous motors, their applications are becoming more and more extensive. The torque control methods of model-based AC permanent magnet synchronous motors are complex and diverse, require a large amount of computation, and are time-consuming and labor-intensive in the development and verification process. The ideal verification process is the real vehicle test, followed by the motor bench verification, which is very inefficient, and sometimes the conditions are not available. [0003] However, in the process of correcting the parameters of the permanent magnet synchronous motor in the prior art, there are technical...

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Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for modifying parameters of permanent magnet synchronous motors based on model reference, which solves the technical problems of low efficiency and low precision in the process of modifying parameters of permanent magnet synchronous motors in the prior art. The design and verification of the model can speed up the progress of product development, greatly shorten the development cycle of the vehicle, expose the shortcomings of problems in advance, feedback and correct design errors, reduce the waste of subsequent resources, and achieve the technical effect of improving the efficiency and accuracy of parameter correction

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