Automated calibration method and system for interior permanent magnet synchronous motor (ipmsm)

The automated calibration method enables efficient calibration of parameters for embedded permanent magnet synchronous motors, solving the problems of long calibration time and large torque error in traditional calibration methods. This improves the motor's operating efficiency and dynamic response performance, making it suitable for the needs of large-scale motor production.

CN122247286APending Publication Date: 2026-06-19NANJING WEIFU JINNING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING WEIFU JINNING
Filing Date
2026-03-12
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional calibration methods for embedded permanent magnet synchronous motors (IPMSMs) are time-consuming and have large torque errors, which seriously affect the motor's operating efficiency and dynamic response performance, becoming a bottleneck for the mass production of motors.

Method used

An automated calibration method is adopted, including inner loop parameter diagnosis, high-precision zero-position angle compensation, Iqd command generation, current scanning and data acquisition, algorithm optimization and data output, to construct torque line sets such as MTPA, thereby achieving efficient calibration of motor parameters.

Benefits of technology

It shortens the calibration time of a single motor to 1/5 of the traditional method, controls the torque error within 5%, improves the dynamic response speed of motor control performance, and provides technical support for the mass production of motors.

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Abstract

This invention relates to an automated calibration method and system for an embedded permanent magnet synchronous motor (IPMSM), belonging to the field of embedded permanent magnet synchronous motors. This technical solution integrates motor zero-position calibration, parameter calibration, and maximum torque per ampere (MTPA) calibration to construct a complete and efficient automated calibration process. Specifically, motor zero-position calibration uses a high-precision encoder to monitor the rotor position in real time and quickly locks the rotor at zero position using a closed-loop control algorithm. Parameter calibration employs an optimization method based on an isotorque line model, maximizing motor torque output by adjusting the current distribution strategy. Under these conditions, the calibration time for a single motor is reduced to 1 / 5 of the traditional method, and the torque error is controlled within 5%, effectively improving the dynamic response speed of motor control performance and providing technical support for the mass production of motors.
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