【摘要】 电压型PWM逆变器是一非线性、多变量、强耦合的系统,建立精确的数学模型极其困难。采用自抗扰控制器,用配置非线性结构替代极点配置进行控制系统的设计,依靠期望轨迹与实际轨迹的误差大小和方向来实施非线性反馈控制,对逆变器的数学模型要求并不高。仿真和实验结果表明,该控制策略能较好地实现电压型PWM逆变器的控制,具有较好的动态特性和较强的鲁棒性。更多还原

【Abstract】 Voltage source PWM-inverter is a nonlinear multivariable system with strong coupling. Its very difficult to present the inverters perfect model. The paper introduces the theory of Auto-disturbance rejection controller.The design use the allocation nonlinear construction instead of the pole-zero assignment. The nonlinear state error feedback control law depend on the error of expected and practice trace. Its without an explicit mathematical model of the plant. The simulation and experiment results confirm the control strategy realize the voltage source PWM-inverters control. It has preferably dynamic characteristics and robust quality.更多还原