摘要
研究了船用电流控制型的Buck-boost变换器的设计,目的是通过设计的变换器实现输出电压可调,并且输出的电压要趋于稳定.通过分析Buck-boost电路以及主要工作原件的波形图,得出输出电压U0和占空比α的关系,根据电路中的关系,计算出电感L和电容C的最小值.然后在原电路基础上设计出了一个电流型控制的Buck-boost电路,这个电路负载输出电压的反馈与设定的基准电压形成电压环,电压环输出的结果与电感电流的反馈形成电流环的双环控制.通过改变基准电压的大小从而改变输出电压的大小.最后利用PSIM软件分别对Buck-boost电路以及电流型控制的Buck-boost电路行仿真.
In this paper,the design of Buck-boost converter for marine current control are studied,which aims to realize the adjustable output voltage through the designed converter,and the output voltage should be stable.By analyzing the buck-boost circuit and the waveforms of the main working components,the relationship between output voltage U 0 and duty cycleαare obtained,and the minimum values of inductance L and capacitance C according to the relationship in the circuit are calculated.Then on the basis of the original circuit,a current-controlled buck-boost circuit is designed.A voltage loop is formed by the feedback of the load output voltage of this circuit and the set reference voltage,and a double-loop control of the current loop is formed by the output result of the voltage loop and the feedback of the inductive current.The output voltage is changed by changing the size of the reference voltage.Finally,PSIM software is used to simulate buck-boost circuit and buck-boost circuit respectively.
作者
梁锋林
LIANG Feng-lin(Meizhouwan Vocational Technology College Department of Automation Engineering,Putian 351119,Fujian,China)
出处
《兰州文理学院学报（自然科学版）》
2020年第4期44-51,61,共9页
Journal of Lanzhou University of Arts and Science(Natural Sciences)
