单相逆变器的滑模控制研究  

Research on Single Phase Inverter with Sliding Mode Control

作　　者：仵杰[1] 张帅斌 邢世艳 张英豪 WU Jie;ZHANG Shuaibin;XING Shiyan;ZHANG Yinghao(School of Electronic Engineering,Xi'an Shiyou University,Xi'an 710065,China)

机构地区：[1]西安石油大学电子工程学院,陕西西安710065

出　　处：《机械工程与自动化》2025年第2期41-44,共4页Mechanical Engineering & Automation

摘　　要：在逆变器中采用PI解耦控制可实现对正弦量无静差跟踪,但在对系统动态响应速度方面有所欠缺。针对这一问题,研究了一种滑模变结构控制器,通过二阶广义积分器产生dq坐标变换所需要的正交量,逆变器采用电压电流双闭环控制,根据逆变器dq旋转坐标系下的数学模型,分别设计了PI控制器和基于趋近率的滑模控制器。仿真结果表明:两者都能达到控制的目的,但滑模控制具有动态响应速度快、输出电压波形正弦度高和电压谐波畸变率小等特点。In the inverter,the adoption of PI decoupling control can realize the zero-static-error tracking of sinusoidal quantities,but it is deficient in the aspect of system dynamic response speed.Aiming at this problem,a sliding mode variable structure controller was investigated.The orthogonal quantities required for dg coordinate transformation were generated through a second-order generalized integrator.The inverter adopted a double closed-loop control of voltage and current.According to the mathematical model of the inverter in the dq rotating coordinate system,the PI controller and the sliding mode controller based on the reaching law were respectively designed.The simulation results indicate that both can achieve the control purpose.However,the sliding mode control has the characteristics of fast dynamic response speed,high sinusoidal degree of the output voltage waveform,and low voltage harmonic distortion ratio.

关 键 词：单相逆变器 滑模控制 二阶广义积分器 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置] TM464[自动化与计算机技术—控制科学与工程]