随着新能源发电并网系统发展和各类新兴直流负载出现,直流配电网得到快速发展,高增益直流变换器成为不同电压等级互联的关键设备。提出了一种基于子模块级联结构的谐振式模块化直流变换器RMDC(resonant modular DC converter)拓扑,并利...随着新能源发电并网系统发展和各类新兴直流负载出现,直流配电网得到快速发展,高增益直流变换器成为不同电压等级互联的关键设备。提出了一种基于子模块级联结构的谐振式模块化直流变换器RMDC(resonant modular DC converter)拓扑,并利用子模块电容与桥臂电感构成串联谐振回路实现能量传递,同时级联结构易于获得较高的电压增益。首先分析了RMDC工作原理及关键参数和电压增益之间的数学关系;在此基础上,提出一种高增益控制方法;最后通过仿真和实验结果验证了理论分析和高增益控制方法的有效性和正确性。展开更多
This paper presents an output feedback design approach based on the adaptive control scheme developed for nonlinearly parameterized systems,to achieve global output regulation for a class of nonlinear systems in outpu...This paper presents an output feedback design approach based on the adaptive control scheme developed for nonlinearly parameterized systems,to achieve global output regulation for a class of nonlinear systems in output feedback form.We solve the output regulation problem without the knowledge of the sign and the value of the high frequency gain a priori.It is not necessary to have both the limiting assumptions that the exogenous signal co and the unknown parameter ju belong to a prior known compact set and the high frequency gain has a determinate lower and upper bounds.The effectiveness of the proposed algorithm is shown with the help of an example.展开更多
文摘随着新能源发电并网系统发展和各类新兴直流负载出现,直流配电网得到快速发展,高增益直流变换器成为不同电压等级互联的关键设备。提出了一种基于子模块级联结构的谐振式模块化直流变换器RMDC(resonant modular DC converter)拓扑,并利用子模块电容与桥臂电感构成串联谐振回路实现能量传递,同时级联结构易于获得较高的电压增益。首先分析了RMDC工作原理及关键参数和电压增益之间的数学关系;在此基础上,提出一种高增益控制方法;最后通过仿真和实验结果验证了理论分析和高增益控制方法的有效性和正确性。
基金supported by the National Natural Science Foundation of China(61663030,61663032)the Natural Science Foundation of Jiangxi Province(20142BAB207021)+4 种基金the Foundation of Jiangxi Educational Committee(GJJ150753)the Open Fund of Key Laboratory of Image Processing and Pattern Recognition of Jiangxi Province(Nanchang Hangkong University)(TX201404003)the Key Laboratory of Nondestructive Testing(Nanchang Hangkong University)Ministry of Education(ZD29529005)the Reform Project of Degree and Postgraduate Education in Jiangxi(JXYJG-2017-131)。
文摘This paper presents an output feedback design approach based on the adaptive control scheme developed for nonlinearly parameterized systems,to achieve global output regulation for a class of nonlinear systems in output feedback form.We solve the output regulation problem without the knowledge of the sign and the value of the high frequency gain a priori.It is not necessary to have both the limiting assumptions that the exogenous signal co and the unknown parameter ju belong to a prior known compact set and the high frequency gain has a determinate lower and upper bounds.The effectiveness of the proposed algorithm is shown with the help of an example.