谷值V~2控制Boost变换器原理及稳定性分析

发布时间：2019-03-22 06:59

【摘要】：分析了Boost变换器的输出电压纹波,将谷值V2控制技术应用于Boost变换器。详细分析了谷值V2控制Boost变换器的工作原理,讨论了系统的稳定性,研究了斜坡补偿对其稳定性的影响。搭建了基于PSIM软件的仿真模型和实验平台,仿真及实验结果表明:工作于连续导电模式的谷值V2控制Boost变换器稳定工作范围为占空比大于0.5;在占空比小于0.5时会发生次谐波振荡,该次谐波振荡可以通过加入适当的斜坡补偿有效地消除。
[Abstract]:The output voltage ripple of the Boost converter is analyzed, and the valley V2 control technology is applied to the Boost converter. The working principle of valley V 2 controlled Boost converter is analyzed in detail. The stability of the system is discussed and the effect of slope compensation on the stability of the converter is studied. The simulation model and experimental platform based on PSIM software are built. The simulation and experimental results show that the stable operating range of Boost converter controlled by valley V2 operating in continuous conduction mode is more than 0.5 duty cycle. The subharmonic oscillation will occur when the duty ratio is less than 0.5, which can be effectively eliminated by adding appropriate slope compensation.
【作者单位】：西南交通大学电气工程学院磁浮技术与磁浮列车教育部重点实验室;
【基金】：国家自然科学基金资助项目(51177140,61371033) 高等学校博士学科点专项科研基金资助项目(201301-84120011) 四川省青年科技基金资助项目(2013JQ0033) 中央高校基本科研业务费专项资金资助项目(SWJTU11BR33,2682013ZT20)~~
【分类号】：TM46

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