永磁同步电机预测电流控制优化策略

以永磁同步电机调速系统为研究对象,优化其预测电流控制环节。在传统预测环节的基础上,经过一拍延时补偿后,应用无差拍控制理论减少循环寻优次数,最后将最大转矩电流比优化目标函数加入到多目标函数的构建中。在Matlab中建立仿真模型来验证优化后的控制策略,结果表明:预测电流控制优化策略可以减轻控制系统的运算负荷,提高系统效率并增强转速的控制能力,其性能相比传统预测电流控制策略具有一定的优越性。

Predictive Current Control Optimization Strategy of Permanent Magnet Synchronous Motor

Taking the speed control system of permanent magnet synchronous motor as the research object, its predictive current control process is optimized. Based on the traditional predictive process, the dead beat control is applied to reduce the number of circulation in the predictive model after one step delay. Then it puts the optimized objective function based on MTPA into the process of structuring multi-objective function. The Matlab simulation model is established to verify the optimized control strategy. The results show that the optimized predictive current control strategy can reduce the operating load of the control system, improve the system efficiency and enhance the speed control ability. Comparing with the traditional predictive current control strategy, it has some advantages.