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永磁同步电机高效非线性模型预测控制

DOI: 10.3724/SP.J.1004.2014.01958, PP. 1958-1966

Keywords: 永磁同步电机,模型预测控制,输入-输出反馈线性化,非线性,转速控制

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Abstract:

?永磁电机控制器要求电机有很强的转速跟踪能力,并且要保证系统参数变化及负荷扰动下系统的鲁棒性.永磁电机包含很多不确定因素,是强耦合的非线性系统,传统的线性控制器很难对其进行控制.针对永磁电机的转速控制构造非线性模型预测控制方法.非线性永磁电机模型通过输入-输出反馈线性化策略解耦成为新的线性系统.为保证可行解的收敛性,提出一种迭代二次规划方法来处理由输入-输出反馈线性化导致的非线性约束.仿真结果表明,控制器能有效降低计算负担,具有很好的动态控制性能,能抑制转矩脉动,并保证在参数变化和负荷扰动下控制系统的鲁棒性.

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