Improvement and Semi-Physical Simulation Study of Vector Control of Ship Load Motors

In order to address the issues of slow speed response, high overshoot and poor robustness in the speed sensorless vector control system of a ship loaded three-phase asynchronous motor, the traditional space vector control research approach has been improved by means of improvements to the traditional speed discrimination system research model. In this study, we propose an enhancement of the speed sensorless vector control of ship propulsion motors. This enhancement is based on the Model Reference Adaptive System (MRAS) and Popov super stability theory, and is implemented in the MATLAB-Simulink environment. We also constructed a speed recognition system, the purpose of which is to simulate and analyze the parameters of ship propulsion motors under various working conditions, including speed, torque, and flux linkage.

针对船舶负载三相异步电机无速度传感器矢量控制系统存在的响应速度慢、超调量大、鲁棒性差等问题，本文通过改进传统速度辨识系统研究模型，对传统空间矢量控制研究方法进行优化。本研究提出一种船舶推进电机无速度传感器矢量控制改进方案，该方案基于模型参考自适应系统（Model Reference Adaptive System，MRAS）与波波夫超稳定性理论，并在MATLAB-Simulink环境中实现。此外，本文搭建了速度辨识系统，用于模拟并分析船舶推进电机在不同工况下的转速、转矩及磁链等参数。