Modular multilevel converter-railway static power conditioner(MMC-RPC)is a coupled multi-variable non-linear system,and the traditional direct power control method of PI control is difficult to achieve precise decoupling of the system control.In this paper,a feedback linearized direct power control method based on linear extended state observer is proposed.According to the Lie derivative,the MMC-RPC two-input/two-output power affine model is constructed,and an accurate feedback linearized power decoupling controller is designed.Aiming at the influence of uncertain factors and other disturbances on the effect of precise feedback linearization control,a linear expansion state observer is designed to observe and compensate the disturbances,and to achieve precise power tracking control.Finally,the proposed control method is validated by building a simulation model on the MATLAB/Simulink platform.
关键词
模块化多电平铁路功率调节器/反馈线性化/线性扩张状态观测器/直接功率
Key words
MMC-RPC/feedback linearization/linear extended state observer/direct power control
维普
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