分数阶滑模直接转矩异步发电内模控制

Fractional Sliding Mode Direct Torque Asynchronous Power Generation Internal Model Control

在强冲击负载和宽转速范围情况下,为提高异步发电的非线性鲁棒稳定性能,改善整数阶滑模转矩控制存在的抖振,减小非线性系统模型不确定性的影响,通过引入分数阶微积分算子和内模控制算法,提出一种分数阶滑模直接转矩异步发电内模控制方法。为验证控制方法的有效性,进行了仿真验证和样机测试,仿真及实测结果表明,在负载冲击和转速宽范围突变情况下,与传统整数阶滑模前馈解耦控制相比,新控制方法能有效减小磁链和转矩脉动,削减系统抖振,改善系统对不精确模型的控制效果,提升了系统的鲁棒性能。

In order to improve the nonlinear robust stability of asynchronous power generation under high impact load and wide speed range,improve the chattering of integer-order sliding mode torque control and reduce the influence of nonlinear system model uncertainty.A method of internal model control for fractional-order sliding mode direct torque asynchronous power generation is proposed by fractional calculus operator and internal model control algorithm.In order to verify the effectiveness of the control method,simulation verification and prototype test are carried out.The simulation and actual test results show that the new control method is compared with the traditional integer-order sliding mode feedforward decoupling control under the condition of sudden load shock and wide range of speed.It can effectively reduce the flux linkage and torque ripple,reduce system chattering,improve the control effect of the system on inaccurate models,and improve the robust performance of the system.