基于滑模控制的PWM整流器的研制  

Research on PWM Rectifier Based on Sliding-mode Control

作　　者：洪庆祖[1] 谢运祥[1] 

机构地区：[1]华南理工大学,电力学院,广东广州510640

出　　处：《电力电子技术》2012年第1期35-36,共2页Power Electronics

摘　　要：在建立三相PWM整流器的非线性数学模型的基础上,针对传统PI控制难以达到良好的控制效果的问题,采用电压外环为滑模变结构控制,电流内环为前馈解耦控制的方法,并且以DSP为主控芯片搭建实验样机,为降低开关损耗,采取五段式空间矢量调制,实验结果验证了控制策略的可行性和优越性。Aiming at the problem that traditional PI control is difficult to achieve good control effect, sliding model variable structure control is used in out-voltage-loop ,feed-forward decoupling control is adopted in current-loop, and test prototype with DSP as the controller chip is built which based on establishing nonlinear mathematical model of the three-phase PWM converter.In order to reduce the switching loss,five sections of space vector modulation is adopted.The experimental results verify the feasibility and advantage of control strategy.

关 键 词：整流器 滑模控制 前馈解耦 空间矢量调制 

分 类 号：TM461[电气工程—电器]