摘要
采用磁集成技术将变压器与电抗器集成,能够进一步提高大电流输出地铁牵引变压器的功率密度和工作效率,改善输出波纹;有效减少一次侧逆变管损耗,磁件的体积和损耗。综述了磁集成的概念,针对深圳地铁3号线的应用实例,分析集成磁件的等效电路和工作原理,着重讨论其漏抗设计并采用三维有限元稳态非线性法对该地铁变压器进行建模,仿真计算得出的变压器漏抗值与现场试验数据非常接近,验证了该集成磁件能够完全取代多重逆变系统中的平衡电抗器。
The integrating of transformer and reactor by integrated magnetic technology can effectively increase the efficiency of the heavy current supply metro traction transformer,improve the output ripple and reduce the loss of the inverter diodes at the primary side. The paper gives an overuiew on the conception of the integrated magnetic thechnology. The equivalent circuit of the integrated magnetics as well as its working principle is also analyzed in detail. The design of leakage reactance is discussed,and the simulation result of the metro transformer by the 3D finite element static nonlinear method is very close to the measured values by short-circuit experiment. The integrated magnetics is proved to be able to replace the balance-reactor in the multiple inverter system.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2007年第3期58-61,95,共5页
Proceedings of the CSU-EPSA
关键词
牵引变压器
磁集成技术
等效电路
有限元
稳态非线性
平衡电抗器
traction transformer
integrated magnetics
equivalent electrical circuit
finite element method（FEM）
static nonlinear
balance-reactor
