An adaptive current compensation control for a single-sided linear induction motor(SLIM) with nonlinear disturbance observer was developed. First, to maintain t-axis secondary component flux constant with consideratio...An adaptive current compensation control for a single-sided linear induction motor(SLIM) with nonlinear disturbance observer was developed. First, to maintain t-axis secondary component flux constant with consideration of the specially dynamic eddy-effect(DEE) of the SLIM, a instantaneously tracing compensation of m-axis current component was analyzed. Second,adaptive current compensation based on Taylor-discretization algorithm was proposed. Third, an effective kind of nonlinear disturbance observer(NDOB) was employed to estimate and compensate the undesired load vibrations, then the robustness of the control system could be guaranteed. Experimental verification of the feasibility of the proposed method for an SLIM control system was performed, and it showed that the proposed adaptive compensation scheme with NDOB could significantly promote speed dynamical response and minimize speed ripple under the conditions of external load coupled vibrations and unavoidable feedback control variables measured errors, i.e., current and speed.展开更多
基于微分代数控制系统的反馈线性化方法,进一步研究了具有非线性负荷的电力系统中静止无功补偿器(Static var compensator,SVC)和发电机三阶模型的励磁控制,表明具有非线性负荷和SVC装置的NDAS(3)仍可以通过状态反馈精确线性化,从而得...基于微分代数控制系统的反馈线性化方法,进一步研究了具有非线性负荷的电力系统中静止无功补偿器(Static var compensator,SVC)和发电机三阶模型的励磁控制,表明具有非线性负荷和SVC装置的NDAS(3)仍可以通过状态反馈精确线性化,从而得到具有代数方程的Brunovsky标准型。提出了具有非线性负荷的电力系统SVC与发电机励磁控制的完全精确线性化设计。该控制方法可以同时满足发电机功角稳定和SVC节点处电压。仿真结果表明该方法具有很好的效果和优越性。展开更多
论文提出一种针对单边直线感应电机(single-sided linear induction motors,SLIMs)的基于非线性负载扰动观测器的预测电流补偿控制策略。首先考虑到SLIM特有的动态端部效应的影响,通过跟踪补偿M-轴电流分量来维持次级磁链T-轴分量的恒定...论文提出一种针对单边直线感应电机(single-sided linear induction motors,SLIMs)的基于非线性负载扰动观测器的预测电流补偿控制策略。首先考虑到SLIM特有的动态端部效应的影响,通过跟踪补偿M-轴电流分量来维持次级磁链T-轴分量的恒定,而后在一次线性条件下,引入一阶离散泰勒级数对速度状态进行预测。另一方面将电机气隙变化与各类边端效应对电机推力输出的影响统一为系统受到负载扰动的影响,而应对此扰动,通过非线性扰动观测器,在预测前向控制通路增加了实时补偿控制量,借此提升整个预测控制系统的鲁棒特性。最后实验对所提算法的有效性进行了验证。展开更多
基金Project(114601034)supported by the Scholarship Award for Excellent Doctoral Students Granted by the Ministry of Education of ChinaProject(61273158)supported by the National Natural Science Foundation of China
文摘An adaptive current compensation control for a single-sided linear induction motor(SLIM) with nonlinear disturbance observer was developed. First, to maintain t-axis secondary component flux constant with consideration of the specially dynamic eddy-effect(DEE) of the SLIM, a instantaneously tracing compensation of m-axis current component was analyzed. Second,adaptive current compensation based on Taylor-discretization algorithm was proposed. Third, an effective kind of nonlinear disturbance observer(NDOB) was employed to estimate and compensate the undesired load vibrations, then the robustness of the control system could be guaranteed. Experimental verification of the feasibility of the proposed method for an SLIM control system was performed, and it showed that the proposed adaptive compensation scheme with NDOB could significantly promote speed dynamical response and minimize speed ripple under the conditions of external load coupled vibrations and unavoidable feedback control variables measured errors, i.e., current and speed.
文摘基于微分代数控制系统的反馈线性化方法,进一步研究了具有非线性负荷的电力系统中静止无功补偿器(Static var compensator,SVC)和发电机三阶模型的励磁控制,表明具有非线性负荷和SVC装置的NDAS(3)仍可以通过状态反馈精确线性化,从而得到具有代数方程的Brunovsky标准型。提出了具有非线性负荷的电力系统SVC与发电机励磁控制的完全精确线性化设计。该控制方法可以同时满足发电机功角稳定和SVC节点处电压。仿真结果表明该方法具有很好的效果和优越性。
文摘论文提出一种针对单边直线感应电机(single-sided linear induction motors,SLIMs)的基于非线性负载扰动观测器的预测电流补偿控制策略。首先考虑到SLIM特有的动态端部效应的影响,通过跟踪补偿M-轴电流分量来维持次级磁链T-轴分量的恒定,而后在一次线性条件下,引入一阶离散泰勒级数对速度状态进行预测。另一方面将电机气隙变化与各类边端效应对电机推力输出的影响统一为系统受到负载扰动的影响,而应对此扰动,通过非线性扰动观测器,在预测前向控制通路增加了实时补偿控制量,借此提升整个预测控制系统的鲁棒特性。最后实验对所提算法的有效性进行了验证。
