Coordinate Control of NP Voltage Balance in Two-Stage Three-level DC-AC Converters

被引：0
作者：
He, Zhou [1 ]
Ding, Hongfa [1 ]
Zhang, Ziqi [1 ]
Wu, Jiayang [2 ]
Zhang, Dandi [1 ]
Liu, YingZhe [1 ]
Xiao, Ziheng [3 ]
Yao, Zhigang [3 ,4 ]
Tang, Yi [5 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, Wuhan, Peoples R China
[2] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Peoples R China
[3] Nanyang Technol Univ, Energy Res Inst, Singapore, Singapore
[4] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu, Peoples R China
[5] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore, Singapore
来源：
2024 IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, APEC | 2024年
关键词：
Coordinate Control; Neutral-point Voltage Balancing; Two-stage converter; OSCILLATIONS; MODULATION; STRATEGY; DESIGN;
D O I：
10.1109/APEC48139.2024.10509106
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：
In this article, NP voltage coordinate control model in two-stage DC-AC converters is originally proposed. In the proposed model, the timely predicted NP current of DC-AC converters is directly used as the power allocation coefficient of DC-DC converters, which helps to compensate NP AC fluctuation. Besides, the decoupled PI control is used to overcome NP DC bias. With the balanced and less-fluctuated NP voltage, waveform quality of AC-DC converters is improved with smaller DC-link capacitance. Effectiveness of the NP voltage coordinate control model is validated by experiment based on the three-phase/level/wire T-type converter connected with a three-level boost converter.
引用
收藏
页码：2749 / 2755
页数：7
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