【摘要】 针对采用BP调节器时无法消除逆变侧电流环前向通道中诸多扰动的问题,提出了一种扰动观测器前馈补偿法与BP调节器相结合的方法。将系统被控对象中所有非线性扰动视为一个扰动进行观测并前馈补偿,显著改善了并网电流质量。给出了理论分析和系统设计方法,最后通过仿真和试验验证了该方法的有效性。更多还原

【Abstract】 For the problem of disturbance outside the current loop bandwidth when using BP regulator,the paper proposes a method which combines disturbance observer feedforward compensation and BP regulator.Regarding all nonlinear disturbances among the controlled objects as one disturbance,the feedforward compensation is carried out to improve the quality of grid-connected current significantly according to the observation of the disturbance.What’s more,this paper proposes the method of theoretical analysis and system design,and verifies its effectiveness by simulation and experimental results.更多还原