Current passive control method for dual-inertia permanent magnet synchronous motor

Abstract

The invention relates to a current passive control method for a dual-inertia permanent magnet synchronous motor. A dual-inertia permanent magnet synchronous motor system and a current passive controller are included; the dual-inertia permanent magnet synchronous motor system is a high-precision permanent magnet synchronous motor mathematical model built on the basis of a motor body and a load; the current passive controller is used for constructing the dual-inertia permanent magnet synchronous motor system into a port controlled Hamiltonian dissipation (PCHD) system, a current loop controller is designed through an interconnection and damping configuration passive control method, axis d and axis q current control is achieved, and the speed regulation on the permanent magnet synchronous motor is achieved. The method has the following advantages that the control system formed by the motor and the load is equivalent to the two inertial elements of the motor and the load; by means of the passive control theory, the current loop controller of the dual-inertia permanent magnet synchronous motor system is designed. Accordingly, high-precision speed regulation of the dual-inertia permanent magnet synchronous motor system is achieved, and meanwhile high robustness and antijamming capability are achieved.

Description

technical field [0001] The invention relates to a current passive control method of a double inertia permanent magnet synchronous motor. Background technique [0002] The permanent magnet synchronous motor has the advantages of simple structure, high efficiency, high power factor, high power density, high torque-to-current ratio, and low moment of inertia. However, the nonlinear dynamic coupling of the permanent magnet synchronous motor and its time-varying motor parameters make it difficult to control. In the actual system, the motor itself also has many external disturbances, and the internal parameters of the motor will also change with the ambient temperature and humidity, etc. Factors change. [0003] As a new nonlinear system analysis and design method, passive control theory has attracted extensive attention from the control community due to its good physical interpretation and global convergence characteristics, and has been widely used in robotics, power converters...

AI Technical Summary

Problems solved by technology

Some scholars have designed a motor current loop controller based on passive control theory, but because the motor is only equivalent to a single inertia system, and the coupling and load inertia are ignored, the designed controller often cannot achieve high motor performance. Accurate speed regulation; some scholars have designed nonlinear controllers for dual-inertia permanent magnet synchronous motor systems, but the designed controllers are too complicated to be applied to actual processes

So far, the dual inertia permanent magnet synchronous motor current controller based on passive control theory has not yet appeared in the field of permanent magnet synchronous motor control

Images