摘要
传统的矢量控制方法基于异步电机的稳态模型,控制性能受电机的参数影响很大。本文结合异步电机的特性和要求在控制策略中设计了转速、电流、磁链等多个闭环,采用了对参数依赖性很小的偏差电压解耦方式,并结合电机的电压模型和电流模型对传统的转子磁链计算进行了补偿和修正,有效地降低参数变化对系统的影响。DSP芯片TMS320F2812有着强大的运算能力和优良的控制性能,基于该芯片的硬件系统很好地实现了控制方案,实验表明该控制系统精度高,实时性和动态响应都较好。
Traditional vector control is based on steady-state model of asynchronous motor. The performance of the control system is affected greatly by motor parameters. Combining with the speciality of asynchronous motor, a number of closed loop of the rotational speed, current, and flux are designed in control strategy. Deviation voltage deeoupling which depends little on parameters is adopted. Conventional calculation of rotor flux is compensated and corrected. This system effectively reduces the bad effect of the parameters variation. DSP chip TMS320F2812 has powerful operation ability and excellent control capability. The hardware system based on this chip well implements this control scheme. Experimentation indicates that this control system has the advantages of high precision, good real-time characteristics and dynamic response.
出处
《大电机技术》
北大核心
2010年第1期32-36,40,共6页
Large Electric Machine and Hydraulic Turbine
