A Dynamic Voltage Restorer Equipped With a High-Frequency Isolated DC-DC Converter

被引：65

作者：

Jimichi, Takushi ^{[1
]}

Fujita, Hideaki ^{[1
]}

Akagi, Hirofumi ^{[1
]}

机构：

[1] Tokyo Inst Technol, Tokyo 1528550, Japan

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2011年 / 47卷 / 01期

关键词：

Dynamic voltage restorers (DVRs); high-frequency transformers; isolated dc-dc converters; magnetic-flux bias; series transformers; voltage sags;

D O I：

10.1109/TIA.2010.2091374

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a dynamic voltage restorer (DVR) that is characterized by the use of a high-frequency unidirectional isolated dc-dc converter. A traditional DVR has a large and bulky series transformer even for three-phase low-voltage up to 480-V applications because the transformer operates at the line frequency (50 or 60 Hz). The emergence of state-of-the-art semiconductor devices and magnetic cores has driven power electronic engineers to develop compact high-frequency isolated dc-dc converters. This paper discusses the control and performance of a low-voltage DVR using a high-frequency isolated dc-dc converter. The high-frequency (20-kHz) transformer in the dc-dc converter is much smaller, for example, one-hundredth, in volume than the line-frequency transformer. Moreover, connecting the shunt converter to the load side brings a significant reduction in energy-storage capacity to the DVR. Experimental results obtained from a three-phase three-wire 200-V 5-kW laboratory system confirm the viability and effectiveness of the system configuration.

引用

页码：169 / 175

页数：7

共 9 条

[1] A 3-PHASE SOFT-SWITCHED HIGH-POWER-DENSITY DC-DC CONVERTER FOR HIGH-POWER APPLICATIONS [J].