Characteristics Analysis of the Operational Parameters of a Novel Rectifier Transformer With Filters  

作　　者：ZHAO Zhiyu LUO Longfu XU Jiazhu TRAN Thanhngoc ZHANG Zhiwen 

机构地区：[1]Hunan University

出　　处：《中国电机工程学报》2012年第22期I0012-I0012,14,共1页Proceedings of the CSEE

基　　金：国家自然科学基金项目（51077045,50907018,51077044）

摘　　要：新型整流变压器及其滤波系统由网侧、阀侧绕组,独立滤波绕组及与之相连的滤波器组构成,其特殊的滤波支路能够在滤波和无功补偿的同时改善变压器的运行特性。首先推导以谐波抑制因子为表达方式的谐波电流抑制模型以考察谐波传递情况;然后构建网侧绕组电流和负载电流之间的数学关系,藉此研究无功补偿特性,并分析相关的运行参数;之后建立阀侧电压与网侧电压的数学关系,以研究滤波器对阀侧电压的影响。理论分析表明,新型整流变压器及其滤波系统可以有效抑制谐波,降低网侧电流和视在功率,提高网侧功率因数并增加负载电压。实际应用在工业直流供电系统中的新型整流变压器的现场实测结果,验证了理论分析的正确性。该文更全面地揭示了新型整流变压器能改善整流系统的运行特性,所推导的数学模型将为新型整流变压器在降噪节能等方面的进一步研究提供理论依据。The nonlinearity of the converter leads to lots of harmonics and reactive power, which causes the increase of additional loss, vibration, noise, etc, so the transformer will be adversely affected. The new rectifier transformer is a special kind of transformer. Its grid side winding is connected to power grid, and the secondary winding is connected to the nonlinear load such as rectifiers and inverters which can be modeled as harmonic sources and can feed harmonic currents into the supply network. Its tertiary winding is connected to the filters as a harmonic suppression system that supplies a low-impedance path for harmonic flow.

关 键 词：整流变压器 参数特性 过滤器 非线性负载 运行 供电网络 绕组连接 次级绕组 

分 类 号：TM422[电气工程—电器] TV734.2[水利工程—水利水电工程]