新型三相变四相阻抗匹配平衡变压器原理

Novel Three-Phase to Four-Phase Impedance Matching Balance Transformer

在已有的三相变两相平衡变压器基础上,从阻抗匹配原理出发提出并讨论了一种新型的三相变四相阻抗匹配平衡变压器。详细分析了四相侧各绕组阻抗匹配关系以及三相侧与四相侧安匝平衡关系,功率平衡关系,电压、电流变换关系等,论证了该新型阻抗匹配平衡变压器在四相侧负载变化时对一次的零序电流没有影响。通过Matlab/Simulink仿真实验验证了三相变四相阻抗匹配平衡变压器原理分析的正确性,表明该新型阻抗匹配平衡变压器能实现三相与四相输变电的平衡对称转换。

Based on the three-phase to two-phase balance transformer, a novel impedance matching balance transformer is presented and discussed in this paper. The impedance matching of four-phase side and ampere-winding balance and power balance relation are analyzed. Meanwhile the relation of the conversion of voltage and current between the three-phase side and the four-phase side is analyzed too. The study shows that the zero order current of net side is not affected while the loads change in four-phase side. Then, the simulation result verifies the correctness of the principle of the three-phase to four-phase impedance matching balance transformer. The research indicates that the balance symmetry conversion between three-phase and four-phase transmission can be realized by this new matching balance transformer.