电流型双脉冲跨周期调制Buck变换器研究

发布时间：2018-05-19 22:19

本文选题：Buck变换器 + 双脉冲跨周期调制(DPSM)　；参考：《电子技术应用》2017年12期

【摘要】：提出一种断续导电模式(Discontinuous Conduction Mode,DCM)Buck变换器的电流型双脉冲跨周期调制(Dual Pulse Skipping Modulation,DPSM)技术。与电压型DPSM技术比较,电流型DPSM技术采用双环控制技术,检测电感电流以产生具有不同占空比的控制脉冲,克服电压型DPSM开关DC-DC变换器无法检测电感电流的问题,有效防止启动过程中电感电流过冲现象发生。以DCM Buck变换器为例说明电流型DPSM技术的原理和输出电压纹波与脉冲组合之间的关系。运用动力学分析方法建立电流型DPSM DCM Buck变换器的离散时间模型,得出高功率脉冲、低功率脉冲以及跨周期脉冲的组合规律。最后,给出仿真和实验结果,表明有着良好瞬态性能的电流型DPSM Buck变换器低输出电压纹波与较宽的负载可调范围等优点。
[Abstract]:A current type double pulse trans periodic modulation (Dual Pulse Skipping Modulation, DPSM) technology for a Discontinuous Conduction Mode (DCM) Buck converter is proposed. Compared with the voltage type DPSM technology, the current type DPSM technology uses a double loop control technique to detect the inductance current to produce a control pulse with different duty ratio. The voltage type DPSM switch DC-DC converter can not detect the inductance current problem, effectively prevent the inductor current overshoot during the starting process. Taking the DCM Buck converter as an example, the principle of the current type DPSM technology and the relation between the output voltage ripple and the pulse combination are illustrated. The current type DPSM DCM Buck change is established by using the dynamic analysis method. The discrete time model of the converter gives the combination law of high power pulse, low power pulse and cross cycle pulse. Finally, the simulation and experimental results are given, which shows the advantages of low output voltage ripple of current type DPSM Buck converter with good transient performance and wide adjustment of load.
【作者单位】：常州工程职业技术学院;江苏理工学院;
【基金】：常州市科技支撑计划(CE20150063)
【分类号】：TM46

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