基于近似电感电流纹波补偿的PT控制变换器  

PT Control Converter Based on Approximate Inductance Current Ripple Compensation

作　　者：姚雷 魏国安 徐瑞东[1] 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)

机构地区：[1]中国矿业大学,电气工程学院,江苏徐州221116 [2]南京韦兹科技有限公司,江苏南京211500

出　　处：《电力电子技术》2022年第11期131-132,137,共3页Power Electronics

基　　金：国家自然科学基金(51977208)。

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.

关 键 词：变换器 脉冲序列控制 电压低频振荡 

分 类 号：TM46[电气工程—电器]