Abstract：This paper proposes a novel continuously magnetic valve arc-suppression coil, which can avoid the control ‘blind area’ of conventional magnetic valve arc-suppression coil and can reduce the output harmonics. The magnetic valves in this device are composed by continuous gradient cross profiles. Each section of the magnetic valve saturate in succession with the increase of DC current and therefore the ‘blind areas’ of the conventional magnetic valve arc-suppression coil can be avoided. Because the saturation level of each section is different, so current harmonics can be offset with each other and then the total harmonics are reduced. Mathematical model of the magnetization curve and current harmonics distribution are deduced according to its structural characteristics. Theoretical calculations show that the control curve of the device is smooth and there is no ‘blind area’. The transient electromagnetic field calculation and the simulation results are coincident with the theoretical analysis, which demonstrate that the mathematical model is correct: there is not control “blind area” and the current harmonics content of it is lower than conventional magnetic valve arc-suppression coil.
王异凡, 陈国柱, 张曙. 一种连续磁阀式消弧线圈及其数学模型[J]. 电工技术学报, 2014, 29(5): 239-245.
Wang Yifan, Chen Guozhu, Zhang Shu. A Continuously Magnetic Valve Arc-Suppression Coil and Its Modeling. Transactions of China Electrotechnical Society, 2014, 29(5): 239-245.
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