Three-phase simulator of current-response permanent magnet synchronous motor and drive system thereof

Abstract

The invention provides a three-phase simulator of a current-response permanent magnet synchronous motor and a drive system thereof. The three-phase simulator comprises at least two three-phase DC/AC converters, an electrical impedance network, a direct current power supply, a drive behavior processor, a motor behavior processor, a voltage control link and a current control link. Each three-phase DC/AC converter is used to simulate the working status of the permanent magnet synchronous motor and the drive system thereof at the circuit level. The drive behavior processor is used to simulate theelectrical characteristics of the drive system. The motor behavior processor is used to simulate the electrical and mechanical behavior characteristics of the permanent magnet synchronous motor. According to the invention, the simulator can simulate voltage applied to the three-phase permanent magnet synchronous motor port by the drive system and the current response of the permanent magnet synchronous motor to the voltage, so as to simulate the dynamic and static electrical and mechanical behaviors of the permanent magnet synchronous motor and the drive system thereof; the simulator can realize all-electric experiment and test of the motor and the drive system thereof; the test cost is saved; and the test efficiency and safety are improved.

Description

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

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Problems solved by technology

[0004] 1. It is difficult to simulate some complex, highly dynamic and long-term load torque characteristics for the traction motor system;

[0005] 2. The parameters of the test system, especially the motor characteristics, are difficult to change freely;

[0006] 3. The mechanical link greatly increases the loss of the test system, and brings problems such as test safety and accuracy

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