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Permanent magnet synchronous motor parameter identification system based on improved least-squares method

A permanent magnet synchronous motor and least squares technology, applied in the control system, control generator, motor control and other directions, can solve the problems of slow parameter identification efficiency, inability to change in real time, low applicability, etc., to improve computational efficiency and computational efficiency. Speed, increase calculation speed, reduce the effect of space

Inactive Publication Date: 2017-12-01
WUHAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

These methods not only have high cost, slow parameter identification efficiency, and low applicability, but also the identified parameters cannot be changed in real time to keep consistent with the actual value. Therefore, a permanent magnet synchronous motor parameter with high calculation efficiency, real-time and accuracy Identification system is very much needed

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  • Permanent magnet synchronous motor parameter identification system based on improved least-squares method
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  • Permanent magnet synchronous motor parameter identification system based on improved least-squares method

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Embodiment Construction

[0031] The invention discloses a permanent magnet synchronous motor parameter identification system based on the improved least squares method, which uses the parameter identification algorithm based on the improved least squares method to identify the permanent magnet synchronous motor through the parameter acquisition system and the control system of the permanent magnet synchronous motor Real-time resistance value, real-time inductance value, real-time permanent magnet flux linkage value, the identification system includes permanent magnet synchronous motor parameter acquisition system, permanent magnet synchronous motor control system and parameter identification algorithm, wherein: the permanent magnet synchronous motor parameter acquisition system has A voltage collector, a current collector, and a speed collector are connected to the measured permanent magnet synchronous motor through a data transmission line; the permanent magnet synchronous motor control system uses a d...

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Abstract

The invention discloses a permanent magnet synchronous motor parameter identification system based on an improved least-squares method. The real-time resistance value, the real-time inductance value and the real-time permanent magnet magnetic chain value of a permanent magnet synchronous motor are identified through a permanent magnet synchronous motor parameter collecting system and a control system by using a parameter identification algorithm based on the improved least-squares method. The identification system comprises a permanent magnet synchronous motor parameter collection system, a permanent magnet synchronous motor control system and a parameter identification algorithm, wherein the permanent magnet synchronous motor parameter collection system comprises a voltage collector, a current collector and a rotating speed collector; the voltage collector, the current collector and the rotating speed collector are connected with a tested permanent magnet synchronous motor through data transmission wires; the permanent magnet synchronous motor control system uses a sine wave vector control system with the direct axis current id being 0; and the parameter identification algorithm uses the permanent magnet synchronous motor parameter identification method based on the improved least-squares method. The permanent magnet synchronous motor parameter identification efficiency can be improved; the identification speed is accelerated; and the parameter identification accuracy can be ensured.

Description

technical field [0001] The invention relates to a permanent magnet synchronous motor parameter identification system, in particular to a permanent magnet synchronous motor parameter identification system based on an improved least square method. Background technique [0002] Nowadays, due to the continuous development of motor control theory and control technology, as well as the urgent requirement of high-precision motor control technology, researchers pay more attention to improving the control performance of permanent magnet synchronous motors by obtaining high-precision motor parameters in real time. If the parameters of the designed controller do not match the parameters of the controlled motor properly, it will have an impact on the control performance of the entire system. [0003] At present, the main methods at home and abroad are to set some motor parameters as fixed values ​​for identification, to use the special state of the motor for motor parameter identificati...

Claims

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Application Information

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IPC IPC(8): H02P21/14H02P25/022
CPCH02P21/14H02P25/024H02P2207/05
Inventor 曹小华魏恒杨非凡王鑫任晓玉徐志姜
Owner WUHAN UNIV OF TECH
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