Simulation system of current responding three-phase permanent magnet synchronous motor

Abstract

The invention provides a simulation system of a current responding three-phase permanent magnet synchronous motor. The simulation system comprises a three-phase DC / AC power electronic converter, a three-phase passive impedance network, a current control circuit and a motor behavior processor; the three-phase DC / AC power electronic converter and the three-phase passive impedance network are used for simulating the current responding characteristic of the current responding three-phase permanent magnet synchronous motor, and exchanging electrical energy with an external motor drive system; the current control circuit is used for closed-loop control on the current of a three-phase alternating current power port of the simulation system; and the motor behavior processor is used for generating a current reference signal of the current control circuit according to a voltage signal of the three-phase alternating current power port of the simulation system and an input load torque signal, and outputting a corresponding motor speed signal and a motor rotor position signal. The simulation system can be directly connected with a real motor drive system and exchange electrical energy, thus realizing an all-electronic motor drive test, and improving the test efficiency and the safety.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a simulation system of a current-responsive three-phase permanent magnet synchronous motor. Background technique [0002] Permanent magnet synchronous motor (Permanent Magnet Synchronous Machine, PMSM) and its supporting motor speed control drive system are widely used in wind power generation, industrial control, electric vehicles and other important fields of electric energy conversion and electric drive. In these applications, the power class and power density of permanent magnet synchronous motors are increasing, and the load characteristics are becoming more and more complex. During design, development and factory commissioning, it is often necessary to conduct a series of functional and reliability tests and verifications on the permanent magnet synchronous motor and its drive system. [0003] The traditional permanent magnet synchronous motor test method, in add...

AI Technical Summary

Problems solved by technology

When faced with more and more complex operating conditions, as well as higher and higher reliability and functional requirements, the traditional motor testing method will have a series of limitations: 1) It is difficult to simulate some complex 2) The parameters of the test system, especially the characteristics of the motor, are difficult to change freely; 3) The mechanical link greatly increases the loss of the test system and brings test safety and accuracy, etc. question

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