基于电容ESR的升压变换器环路补偿研究  

Loop Compensation Study of Boost Converter Based on Capacitor ESR

作　　者：郭颖娜 王晓凡 程为彬 冷明全 

机构地区：[1]陕西省油气井测控技术重点实验室,陕西西安710065

出　　处：《湘潭大学自然科学学报》2016年第4期62-66,共5页Natural Science Journal of Xiangtan University

基　　金：陕西省科学技术研究发展计划项目(2013K07-14);陕西省教育厅重点实验室科研计划项目(15JS083)

摘　　要：运用双极点双零点控制理论,设计了电压控制模式下升压变换器的补偿环路.通过选择在合适频率点处放置零极点来矫正系统的响应曲线,以达到增大相位裕度的目的.利用Cadence 16.6对所设计环路进行电路仿真,对比分析了补偿前后穿越频率点处的相位裕度和幅值.在负载电流跳变时,对不同输入电压下的输出电压稳定性进行仿真验证.结果表明,在受到负载突变干扰时,变换器能够在很短时间内恢复正常工作,满足宽范围输入电压的输出稳定性要求.The compensation loop of the voltage controlled Boost converter is designed by using the double zero-pole point control theory.The response curve of the system is corrected by selecting the zero-pole at the appropriate frequency point to achieve the purpose of increasing the phase margin.By using Cadence16.6to simulate the designed circuit,the phase margin and the amplitude of the crossing frequency point are compared and analyzed.When the load current is changed,the output voltage stability under different input voltage is simulated and verified.The results show that the converter can resume normal work in a very short time and meet the output stability requirements of the wide range input voltage when it is disturbed by the jump of load current.

关 键 词：电容ESR 环路补偿 宽范围 输入电压 稳定性 

分 类 号：TP273.1[自动化与计算机技术—检测技术与自动化装置]