Study On the Optimal DC Voltage Control For Power Electronic Transformer

被引：0
|
作者：
Zhou, Ke [1 ]
Chu, Hongbo [1 ]
Lan, Zheng [2 ]
Hu, Yangkai [2 ]
Sun, Zhiyuan [1 ]
Liu, Mosi [1 ]
机构：
[1] Guangxi Grid Co Ltd, Elect Power Res Inst, Nanning 530023, Guangxi, Peoples R China
[2] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China
来源：
2015 5TH INTERNATIONAL CONFERENCE ON ELECTRIC UTILITY DEREGULATION AND RESTRUCTURING AND POWER TECHNOLOGIES (DRPT 2015) | 2015年
关键词：
DC-link voltage; capacitor voltage control; power loss; distorted current of power supply; adaptive regulator; CONVERTER; STRATEGY;
D O I：
暂无
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：
Power electronic transformer (PET), the key equipment for future smart grid, is vital for the whole power grid to be in normal operation. The mathematical relationship between the DC-link voltage and the system parameters for PET were analyzed in this paper. Based on the analysis, the optimal DC-link voltage for PET is obtained by mathematical deduction. Then, a novel adaptive voltage regulation method is proposed, in which the DC-link voltage reference value will be maintained in the required optimal voltage level, and it also can be adaptively changed according to different grid voltage levels and load levels. Therefore, PET can avoid the grid voltage and load level fluctuation impact on the input current distortion and output voltage stability. Finally, representative simulation results in PSCAD/EMTDC verify the validity and effectiveness of the optimal DC-link voltage design and the proposed adaptive voltage regulation method.
引用
收藏
页码：2270 / 2275
页数：6
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