浅析永磁同步电动机速度控制

Brief Analysis on Speed Control of PMSM

能源短缺与环境问题备受瞩目,各国积极推行节能减排。电机系统作为工业用电的主要耗能者,占比高达75%,节能工作在我国显得尤为紧迫。永磁同步电动机凭借其结构紧凑、效率高、重量轻等优势,在电机驱动领域脱颖而出。然而,传统的磁场定向控制方式虽高效可靠,但在面对未知扰动时,PI控制器的稳定性和精度却显得力不从心,难以满足高性能应用场景的需求。随着系统复杂性和精度要求的不断提高,PMSM控制面临着响应速度、跟踪精度以及电流保护等多重挑战。现以永磁同步电机为研究对象,通过建立数学模型,设计控制器,深入分析稳定性,并通过仿真实验对比控制策略,以期实现更为精准、高效的控制效果。

The energy shortage and environmental problems have attracted much attention,and the various countries have actively promoted energy conservation and emission reduction.The motor system as the main energy consumption of industrial electricity,accounting for up to 75%,the energy saving work of which is particularly urgent in our country.Because of the advantages such as compact structure,high efficiency and light weight,PMSM stands out in the field of motor drive field.However,although the traditionally-oriented control method of magnetic field is efficient and reliable,the stability and accuracy of PI controller are inadequate in the face of unknown disturbance,which is difficult to meet the needs of high-performance application situation.With the increasing of complexity and accuracy requirements of system,the control of PMSM faces multiple challenges such as response speed,tracking accuracy and current protection.Taking the PMSM as a research object,this paper analyzes its stability in depth through establishing the mathematical model and designing the controller,and compares the control strategy through simulation experiments,so as to achieve more accurate and efficient control effect.