Voltage and Power Balance Control for a Cascaded Multilevel Solid State Transformer

被引：66

作者：

Zhao, Tiefu ^{[1
]}

Wang, Gangyao ^{[1
]}

Zeng, Jie ^{[1
]}

Dutta, Sumit ^{[1
]}

Bhattacharya, Subhashish ^{[1
]}

Huang, Alex Q. ^{[1
]}

机构：

[1] N Carolina State Univ, Future Renewable Elect Energy Delivery & Manageme, Raleigh, NC 27695 USA

来源：

2010 TWENTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) | 2010年

关键词：

STRATEGY;

D O I：

10.1109/APEC.2010.5433584

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 paper, a 20kVA Solid State Transformer (SST) based on 6.5kV IGBT is proposed for interface with 7.2kV distribution system voltage. The proposed SST consists of a cascaded multilevel AC/DC rectifier stage, a Dual Active Bridge (DAB) converter stage with high frequency transformers and a DC/AC inverter stage. Based on the single phase d-q vector control, a novel control strategy is proposed to balance the rectifier capacitor voltages and the real power through the DAB parallel modules. Furthermore, the power constraints of the voltage balance control are analyzed. The SST switching model simulation demonstrates the effectiveness of the proposed voltage and power balance controller. A 3kW SST scale-down prototype is implemented. The experiment results verify the single phase d-q vector controller for the SST cascaded multilevel rectifier.

引用

页码：761 / 767

页数：7

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