Vector Control of Permanent Magnet Synchronous Motors

In this document, we will discuss the following topics: application background, simulation modeling capabilities of PMSM, MATLAB/Simulink implementation, various modules of PMSM control system, and methods for simulation model design and analysis.

Application Background:

Permanent Magnet Synchronous Motors (PMSM) are widely used in CNC machine tools, industrial robots, and other fields due to their high torque-to-inertia ratio, high power density, high efficiency, good reliability, and easy maintenance.

Simulation Modeling Capabilities of PMSM:

We utilize powerful simulation modeling capabilities to create mathematical models of PMSM, implemented through MATLAB/Simulink. The complete PMSM control system is divided into multiple independent modules, including the PMSM main body module, inverter module, coordinate transformation module (implementing Clarke and Park transformations), Space Vector PWM (SVPWM) module, and production modules. By combining these modules, we establish a comprehensive simulation model of the PMSM control system, where each module represents specific mathematical operations and control algorithms.

Simulation Model Design and Analysis Methods:

Using SIMULINK for simulation model development offers significant advantages compared to traditional programming software. Instead of writing complex program code, system modeling is achieved through basic functional blocks that represent mathematical operations and control functions. The block diagram approach allows for visual representation of system dynamics and easier parameter tuning. Through motor simulation, we can analyze various simulation waveforms such as torque, speed, and current responses, providing an effective method for PMSM control system design and analysis.

Key Technologies:

With advancements in permanent magnet materials and control technologies, Permanent Magnet Synchronous Motors (PMSM) have found widespread applications across various fields. Establishing simulation models for PMSM and their control systems is crucial for validating different control algorithms and optimizing the entire control system. To achieve high-performance vector control, we implement PMSM drive technology using field-oriented control (FOC) principles, which involves coordinate transformations, current regulation, and advanced PWM techniques for precise motor control.