Induction motor parameter identification method using factory data and characteristic curve

Abstract

The invention relates to an induction motor parameter identification method using factory data and a characteristic curve, and belongs to the field of induction motor parameter identification. The method comprises the following steps: S1, converting a torque-slip characteristic curve and a stator current-slip characteristic curve of the induction motor into discrete data points by using image recognition, and constructing a characteristic curve data set of the induction motor; s2, utilizing clustering analysis to carry out segmented clustering on the characteristic curve data set of the induction motor so as to simplify the characteristic curve data set; s3, constructing an induction motor parameter identification optimization model based on the obtained characteristic curve simplified data set and induction motor nameplate data; and S4, solving the parameter identification optimization model of the induction motor. According to the method, the problem of insufficient utilization of factory data volume of the induction motor at present can be effectively solved, the parameter identification precision is improved, and meanwhile, the convergence characteristic of an optimization algorithm during parameter identification is improved by introducing clustering analysis.

Description

technical field [0001] The invention belongs to the field of induction motor parameter identification, and relates to an induction motor parameter identification method using factory data and characteristic curves. Background technique [0002] Induction motors are a major component of power system loads. Whether the model is accurate or not has a very important influence on the results of power system simulation analysis. Therefore, determining reasonable induction motor model parameters is a key link in power system simulation modeling. [0003] Identifying induction motor parameters based on induction motor factory data is a more reasonable method to determine parameters. However, the existing research only uses the nameplate data of the induction motor, ignoring the torque-slip characteristic curve and the stator current-slip characteristic curve of the device. At present, the research on parameter identification of induction motor combining these two types of charact...

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Problems solved by technology

However, existing studies only use the nameplate data of induction motors, ignoring the torque-slip characteristic curve and stator current-slip characteristic curve of the equipment

At present, the research on parameter identification of induction motors combined with these two types of characteristic curves has not been reported in the literature.

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