Stability Properties of Digital Predictive Current-Mode Controllers for Three-level Flying Capacitor Converters

被引：0
|
作者：
Bonanno, Giovanni [1 ]
Corradini, Luca [1 ]
机构：
[1] Univ Padua, Dept Informat Engn, Padua, Italy
来源：
2020 THIRTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2020) | 2020年
关键词：
BUCK CONVERTER;
D O I：
10.1109/apec39645.2020.9124324
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper investigates the stability properties of digital predictive current-mode control (DPCMC) of three-level flying capacitor Buck converters (3LFC) operated in single-sampling and multi-sampling mode. While DPCMC has been extensively studied for basic dc-dc topologies, a dedicated analysis is required when it comes to multi-level converters due to the interaction between the predictive control law and the flying-capacitors (FC) voltage dynamics. This work clarifies the operating point-dependent and load-dependent stability properties of average and valley DPCMC and combines them with recently published results for peak DPCMC in order to provide a comprehensive picture for these types of digital controllers. The developed analysis is validated through simulations and experimentally on a low-voltage 500 kHz, 12V-to-1.5V, 500mA 3LFC-Buck prototype.
引用
收藏
页码：312 / 319
页数：8
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