Improved Digital Average Voltage Control for Switching Converter With Capacitor Current Compensation

被引：2
|
作者：
Zhou, Guohua [1 ]
Mao, Guihua [1 ]
Zhang, Wei [1 ]
Hu, Qiming [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu 611756, Peoples R China
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2020年 / 67卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Capacitors; Transient analysis; Switches; Voltage control; Stability analysis; Circuit stability; Digital average voltage control; capacitor current compensation; sampled-data modeling; stability; transient performance; PREDICTIVE CONTROL; BUCK CONVERTER;
D O I：
10.1109/TCSII.2020.2984527
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Taking a buck converter in continuous conduction mode as an example, the improved digital average voltage (IDAV) control technique with capacitor current compensation is presented, and the operation principle and control law are analyzed in detail. The stability and transient performance impacted by the compensation coefficient are investigated by sampled-data modeling, and the optimal compensation coefficient for the fastest load transient performance is found. The analysis results show that the compensation coefficient can be regarded as a virtual equivalent series resistor (ESR) of the capacitor, which affects the stability and transient performance of the system without increasing output voltage ripple. Experimental results are given to verify the correctness of the theoretical analysis.
引用
收藏
页码：3197 / 3201
页数：5
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