新磁阀结构磁控电抗器磁损特性研究  

Research on Magnetic Loss Characteristics of Magnetic Controllable Reactor with Novel Magnetic Valve Structure

作　　者：陈磊磊 谢卫[1] 王文会 纪律 CHEN Leilei;XIE Wei;WANG Wenhui;JI Lü(Department of Electrical Automation,Shanghai Maritime University,Shanghai 201306,China)

机构地区：[1]上海海事大学电气自动化系,上海201306

出　　处：《电源学报》2021年第3期195-202,共8页Journal of Power Supply

摘　　要：分析磁阀式可控电抗器MCR(magnetic-valve controllable reactor)的主要工作原理以及MCR铁心损耗的主要来源,得出在工程上磁滞损耗与涡流损耗的计算公式。在传统磁阀结构的基础上提出了新型磁阀结构,并对传统磁阀结构与新型磁阀结构进行对比分析。通过理论分析可知,新磁阀结构采用圆弧面作为磁场缓冲面,减少了磁阀处磁场的发散量,使磁阀处磁通密度分布更加均匀,进而大大降低了磁阀处的漏磁损耗。使用Ansys电磁场仿真软件,在相同电压等级下分别对传统磁阀结构MCR和新型磁阀结构MCR进行三维动态仿真,采集一个工作周期内的四个仿真时刻,对比分析两种MCR铁心磁阀处的磁通密度分布场图。仿真结果表明:新磁阀结构MCR铁心中的磁通分布得到了优化,磁通密度更加均匀,磁场发散情况得到了很大改善,进而有效地减少了MCR的漏磁损耗。仿真结果验证了理论分析的正确性,同时说明了新型磁阀结构的合理性与先进性。The main working principle of a magnetic-valve controllable reactor(MCR)and the main source of its core loss are analyzed,and the calculation formula for the hysteresis loss and eddy current loss in engineering is also given.Based on the traditional magnetic valve structure,a novel type of magnetic valve structure is proposed,and a comparative analysis of these two types of structure is performed.According to theoretical analysis,the novel magnetic valve structure adopts a circular arc surface as the magnetic field buffer surface,which reduces the amount of magnetic field divergence at the magnetic valve and makes the magnetic flux density distribution therein more uniform,thereby greatly reducing the corresponding leakage magnetic loss.Using the Ansys electromagnetic field simulation software,the three-dimensional dynamic simulations of MCRs with the traditional and novel magnetic valve structures are carried out under the same voltage level.Four simulation moments in one working cycle are collected,and the magnetic flux density distribution field diagrams of core magnetic valves in both MCRs are compared and analyzed.Simulation results show that the magnetic flux distribution in the core of MCR with the novel magnetic valve structure is optimized,the magnetic flux density is more uniform,and the magnetic field divergence is greatly improved,which effectively reduces the leakage magnetic loss of MCR.As a result,the theoretical analysis is verified,which also illustrates the rationality and advancement of the novel magnetic valve structure.

关 键 词：磁控电抗器 新型磁阀结构 铁心损耗 三维动态仿真 优化 

分 类 号：TM474[电气工程—电器]