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Three Phase Induction Motor Torque Ripple Minimization Based On a Novel Nonlinear Dynamic Inverse Controller

机译：基于新型非线性动态逆控制器的三相异步电动机转矩脉动最小化

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摘要

A Nonlinear Dynamic Inverse (NDI) controller is proposed in this work to minimize the ripple torque based on spaceudvector pulse width modulation (SVPWM) which is used in high power induction motors. The nonlinear dynamic inverseudcontroller canceled a non-desirable response of the induction motor and enhancing the performance. This cancellation attemptudby a carful nonlinear algebraic equations. First, a mathematical model of induction motor and linearization process were madeuddecoupling between two inputs have achieved. Then the desired new dynamic are derived from implementing the proposedudNDIC technique that reserves some benefits such as fast torque control, high torque at low speed, and fast speed response. Also,udthe proposed method greatly reduced the torque ripple which is the primary concerns of the classical hysteresis-based direct torque control (DTC) scheme and have an effect on the stator current distortion. The system stability with the designed (NDISVPWM) method is analyzed using the Lyapunov stability theory. Finally, the simulation results with MATLAB/Simulink achieved for a 50-HP IM drive. The results are verification proved that the proposed (NDI-SVPWM) system performs smaller torque ripple and faster torque response than the conventional SVM-based proportional plus integral (PI-DTC) method.
机译：在这项工作中，提出了一种非线性动态逆（NDI）控制器，用于基于大功率感应电动机中使用的空间矢量脉冲宽度调制（SVPWM）来最小化纹波转矩。非线性动态逆 udcontroller消除了感应电动机的不良响应，从而提高了性能。这种消除尝试是通过刻画的非线性代数方程来实现的。首先，建立了感应电动机和线性化过程的数学模型，实现了两个输入之间的去耦。然后，通过实施建议的 udNDIC技术可得出所需的新动态，该技术保留了一些优势，例如快速转矩控制，低速下的高转矩以及快速的速度响应。同样，所提出的方法大大减小了转矩脉动，这是基于经典磁滞的直接转矩控制（DTC）方案的主要考虑因素，并且对定子电流失真产生影响。使用Lyapunov稳定性理论分析了设计（NDISVPWM）方法的系统稳定性。最终，使用MATLAB / Simulink对50-HP IM驱动器进行了仿真。结果证明，与传统的基于SVM的比例加积分（PI-DTC）方法相比，所提出的（NDI-SVPWM）系统具有较小的转矩脉动和更快的转矩响应。

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