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专利号:ZL921071523 专利权人:湖南大学,刘福生、肖乐军、聂光前 本发明是一种三相变两相平衡变压器,接线方式为原方三相采用星形接线,副方在三角形接线绕组的中间一相,增加两个外延支臂,两支臂端点分别与三角形的另一结点构成两相输出,在相位上形成90°的相位差。本发明的重要特点是,提出了用于非等相变换的阻抗匹配原理,控制相关 绕组的电流分布和相位关系,使在三相系统具有中点引出接地时,无论负荷如何变化,原方三相均能保持电流平衡,并在两相负荷相等时,原方三相电流完全对称,因
Patent number: ZL921071523 Patentee: Hunan University, Liu Fusheng, Xiao Lejun, Nie Guangqian The present invention is a three-phase transformer with two-phase transformer. The connection mode is that the original three-phase adopts the star connection and the auxiliary is the delta connection winding In the middle phase, two epitaxial arms are added, and the two arm ends respectively form two-phase outputs with another node of the triangle to form a phase difference of 90 ° in phase. The important feature of the present invention is that impedance matching principle for non-isophase conversion is proposed and the current distribution and phase relationship of the related windings are controlled so that when the three-phase system has a midpoint drawn to ground, no matter what the load changes, Each phase can maintain the current balance, and the two-phase load is equal, the original three-phase current is completely symmetrical due to