一种基于平衡变压器的单相/三相供电方法  

Research on a Single-Phase to Three-Phase Power Supply Method Based on Balance Transformer

作　　者：欧阳帆[1] 周有庆[2] 汤清泉[3] 高乐[2] 刘伟良[1] 

机构地区：[1]湖南省电力试验研究院,长沙410007 [2]湖南大学电气与信息工程学院,长沙410082 [3]中国科学院等离子体物理研究所,合肥230031

出　　处：《电工技术学报》2008年第9期132-137,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(50247006)

摘　　要：提出了一种新的基于Y/>/D型平衡变压器的单相变三相供电方法。其原理是将单相电源分成并联的两条支路:一条直接接入平衡变压器一次侧α相,另一条经变流器移相成与之正交的β相,使其符合平衡变压器两相变三相的平衡变换条件,从而在二次侧获得三相对称电压。与单相变三相变流器相比,在同等负载条件下,该方法的变流器部分只需承受总负载的一半,因而更经济。最后,仿真实验证明了该方法的可行性和实用性。A new single-phase to three-phase power supply method based on Y/〉/D balance transformer is proposed. It is the method that single-phase power supply is separated into two branch circuits in parallel. One connects directly with primary-side of balance transformer as α-phase; the other connects as β-phase via an AC-DC-AC phase-shift converter. The α, β-phase are orthogonal, and match the two-phase to three-phase symmetry transformation condition of balance transformer, so that a high-quality symmetrical three-phase voltage output is produced in the secondary-side of the transformer. Compared with traditional single-phase to three-phase converter, the phase-shift converter in this method needs fewer power-electronic components and bears only half capacity of load. Simulation and experimental results are given at the last, which prove the method is correct and practical.

关 键 词：单相变三相 平衡变压器 逆变器 多环反馈 

分 类 号：TM46[电气工程—电器]