【摘要】 为建立三相电压型四桥臂逆变器的线性化控制模型,将微分几何理论应用到该系统中。利用开关函数和开关周期平均算子建立系统动态数学模型,合理选取状态变量、输入变量和输出变量,得到其仿射非线性系统模型。根据非线性微分几何理论,验证了该模型满足线性化的条件,通过非线性坐标变换将原来的非线性系统转化为既能控制又能观测的线性系统,并推导出原非线性系统的控制规律模型。通过实验验证了其有效性。更多还原

【Abstract】 In order to establish linearization control models of three-phase voltage source four-leg inverter,the differential geometry theory is used.The dynamic mathematical model is established with the switching function and the average switch period operator.The state variables,input variables and output variables are selected reasonably and the affine nonlinear system models are obtained.The conditions for linearization are verified with the differential geometry theory.The nonlinear system is transformed into the linear system controlled and observed through nonlinear coordinate transformation.The control law models are deduced.The effectiveness of the models are verified with the experiment.更多还原