H桥直流变换器的滑模变结构控制
|
摘要
H桥直流变换器具有非线性特征,此处采用滑模变结构控制来扩大系统的稳定工作域。首先在分析电路工作原理的基础上,建立主电路的非线性模型,然后设计了滑模变结构控制算法。接下来利用分岔图法研究了系统在不同电路参数下的非线性特性和稳定工作域,发现系统具有输出电压可调范围宽、鲁棒性强的优势。最后通过仿真和实验验证了理论分析的正确性。此处为H桥变换器提供了一种新的控制方案,并创新性地采用非线性理论对系统的稳定域进行研究,扩展了非线性理论的应用范围。
For H-bridge DC converter has nonlinear characteristics,sliding mode variable structure control is adopted to expand system stability domain.Firstly,the nonlinear model of the main circuit is established based on principle analysis, then the sliding mode variable structure control algorithm is designed.The system nonlinear features and stability domain are studied by using bifurcation diagram method under different circuit parameters, and the advantages are found that the system has a wide and adjustable range of output voltage and strong robustness.Finally,the simulation and experiment studies are conducted to verify the theory.A new control scheme for H-bridge converter is provided and the nonlinear theory is innovatively applied to study the stability of the system and the application scope of non-linear theory is extended.
For H-bridge DC converter has nonlinear characteristics,sliding mode variable structure control is adopted to expand system stability domain.Firstly,the nonlinear model of the main circuit is established based on principle analysis, then the sliding mode variable structure control algorithm is designed.The system nonlinear features and stability domain are studied by using bifurcation diagram method under different circuit parameters, and the advantages are found that the system has a wide and adjustable range of output voltage and strong robustness.Finally,the simulation and experiment studies are conducted to verify the theory.A new control scheme for H-bridge converter is provided and the nonlinear theory is innovatively applied to study the stability of the system and the application scope of non-linear theory is extended.
引文
[1]郭珂,周林,龙崦平.H桥变换器中分岔与混沌现象的研究进展与趋势[J].重庆大学学报,2013,36(7):52-60.
[2]罗晓曙.DC/DC变换器的非线性动力行为及混沌控制[M].北京:科学出版社,2012.
[3]马西奎.电力电子系统的非线性动力学分析[M].北京:科学出版社,2017.
[4]陈庆学.DC/DC变换器滑模变结构控制的研究[D].杭州:浙江工业大学,2009.
[5]田力,曹龙汉,李锐,等.Boost变换器PWM模糊滑模变结构控制器设计[J].西南科技大学学报,2013,28(2):78-83.
[2]罗晓曙.DC/DC变换器的非线性动力行为及混沌控制[M].北京:科学出版社,2012.
[3]马西奎.电力电子系统的非线性动力学分析[M].北京:科学出版社,2017.
[4]陈庆学.DC/DC变换器滑模变结构控制的研究[D].杭州:浙江工业大学,2009.
[5]田力,曹龙汉,李锐,等.Boost变换器PWM模糊滑模变结构控制器设计[J].西南科技大学学报,2013,28(2):78-83.