Practical Controller Design of Three-Phase Dual Active Bridge Converter for Low Voltage DC Distribution System

被引：4
|
作者：
Choi, Hyun-jun [1 ]
Lee, Won-bin [1 ]
Jung, Jee-hoon [2 ]
机构：
[1] LG Elect, Home Appliance & Air Solut H&A, 170 Seongsanpaechong Ro, Chang Won 51533, South Korea
[2] Ulsan Natl Inst Sci & Technol UNIST, Dept Elect Engn, Ulsan 44919, South Korea
来源：
ELECTRONICS | 2020年 / 9卷 / 12期
关键词：
three-phase dual-active-bridge converter; practical controller design; ESR zero; small-signal mode; output impedance; OPERATION;
D O I：
10.3390/electronics9122101
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In a low voltage DC (LVDC) distribution system, isolated bi-directional DC-DC converters are key devices to control power flows. A three-phase dual-active-bridge (3P-DAB) converter is one of the suitable candidates due to inherent soft-switching capability, low conduction loss, and high-power density. However, the 3P-DAB converter requires a well-designed controller due to the influence of the equivalent series resistance (ESR) of an output filter capacitor, degrading the performance of the 3P-DAB converter in terms of high-frequency noise. Unfortunately, there is little research that considers the practical design methodology of the 3P-DAB converter's controller because of its complexity. In this paper, the influence of the ESR on the 3P-DAB converter is presented. Additionally, the generalized average small-signal model (SSM) of the 3P-DAB converter including the ESR of the capacitive output filter is presented. Based on this model, an extended small-signal model and appropriate controller design guide, and performance comparison are presented based on the frequency domain analysis. Finally, experimental results verify the validity of the proposed controller using a 25 kW prototype 3P-DAB converter.
引用
收藏
页码：1 / 19
页数：19
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