Single-phase simulator of current-responsive permanent magnet synchronous motor and its drive system

Abstract

The invention provides a single-phase simulator of a current-responsive permanent magnet synchronous motor and a driving system thereof. The main components of the single-phase simulator comprise a single-phase H-bridge circuit, a driving behavior processor, a motor behavior processor, a voltage control link and a current control link. The single-phase H-bridge circuit is used for simulating operating states of a permanent magnet synchronous motor and the driving system at a circuit level. The driving behavior processor is used for simulating electrical characteristics of the driving system. The motor behavior processor is used for simulating electrical and mechanical behavior characteristics of the permanent magnet synchronous motor. The single-phase simulator can simulate voltage added to a port of any phase of a three-phase or multi-phase permanent magnet synchronous motor by the driving system in the single-phase circuit and current response of the permanent magnet synchronous motor to the voltage, the simulation of dynamic and static electrical and mechanical behaviors of the permanent magnet synchronous motor and the driving system is realized, the full-electricity experiments and tests of the motor and the driving system can be realized by the simulator, the test cost is saved, and the test efficiency and safety are improved.

Description

technical field [0001] The invention relates to the technical fields of power electronics and motors, in particular to a current-responsive permanent magnet synchronous motor and a single-phase simulator for its drive system. Background technique [0002] Permanent magnet synchronous motor (Permanent Magnet Synchronous Machine, PMSM) and its supporting 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,...

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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;

[0007] 4. The test system must be based on three-phase or multi-phase circuits, and the construction cost is relatively high

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