摘要
针对传统脉冲序列(PT)控制变换器的电压低频振荡问题,提出了一种新的近似电感电流纹波补偿脉冲序列(AIC-PT)控制方法。通过增设纹波补偿电路构造出与电感电流纹波近似的信号,并与输出电压叠加实现反馈控制。以Buck变换器为例,阐述了AIC-PT控制抑制低频振荡的机理,并建立其同步开关映射模型。实验结果表明,AIC-PT控制方式可以有效抑制变换器的低频振荡。
Aiming at the problem of voltage low-frequency oscillation of traditional pulse train(PT)control converter,a new approximate inductor current ripple compensation pulse train(AIC-PT)control method is proposed.By adding a ripple compensation circuit,a signal similar to the inductance current ripple is constructed and superimposed with the output voltage to realize feedback control.Taking Buck converter as an example,the mechanism of AIC-PT control is expounded to suppress low-frequency oscillation,and its synchronous switch mapping model is established.The experimental results show that AIC-PT control mode can effectively suppress the low-frequency oscillation of the converter.
作者
姚雷
魏国安
徐瑞东
俞普德
YAO Lei;WEI Guo-an;XU Rui-dong;YU Pu-de(China University of Mining and Technology,Xuzhou 221116,China;不详)
出处
《电力电子技术》
CSCD
北大核心
2022年第11期131-132,137,共3页
Power Electronics
基金
国家自然科学基金(51977208)。
关键词
变换器
脉冲序列控制
电压低频振荡
converter
pulse train control
voltage low-frequency oscillation
