Star/Hexagon Transformer Based Three-Phase Four-Wire DSTATCOM for Power Quality Improvement

被引：0
|
作者：
Singh, Bhim [1 ]
Pychadathil, Jayaprakash [1 ]
Kothari, Dwarkadas Pralhaddas [2 ]
机构：
[1] Indian Inst Technol, New Delhi 110016, India
[2] Vellore Inst Technol, Vellore, Tamil Nadu, India
来源：
INTERNATIONAL JOURNAL OF EMERGING ELECTRIC POWER SYSTEMS | 2008年 / 9卷 / 06期
关键词：
power quality improvement; DSTATCOM; voltage source converter; star/polygon transformer; neutral current compensation;
D O I：
10.2202/1553-779X.1983
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：
A new topology of DSTATCOM (distribution static compensator) is proposed for power quality improvement in three-phase four-wire distribution systems. A three-leg VSC (Voltage Source Converter) is integrated with a star/hexagon transformer for the compensation of reactive power for voltage regulation or for power factor correction along with load balancing, elimination of harmonics currents and neutral current compensation. The star/hexagon connected transformer provides a path to the zero sequence current in a three-phase four-wire distribution system. In order to optimize the voltage rating of the VSC, the star/hexagon transformer is designed to have a suitable voltage rating for the secondary windings for integrating the three-leg VSC. This transformer connection provides the selection of 'off the shelf' VSC for this application and it also provides isolation for the VSC system. The performance of the proposed DSTATCOM system is validated through simulations using MATLAB software with its Simulink and Power System Block set (PSB) toolboxes.
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页数：19
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