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变压器带半波整流电阻负载时原、副边电流关系表达式是一般有关变压器的文献书籍中经常给出的[见本文(1)、(2)式]。但由分析可知,这些公式是在假定:(1)变压器铁心磁特性是线性的;(2)变压器原边线圈电感的感抗远远大于负载电阻对原边的折算值;(3)忽略原边线圈电阻的条件下推导出来的。它们不适用于工作中变压器铁心磁状态的变化范围包括特性曲线饱和区域的情况。本文对后一情况进行了理论分析,得出了适用于这一情况的变压器原、副边电流关系的表达式。经实验验证,所得公式与实验结果相符。
Transformer with half-wave rectifier resistance load when the original, secondary current relationship expression is generally given in the literature of the transformer books often [see this (1), (2) type]. However, the analysis shows that these formulas are based on the assumption that: (1) the magnetic properties of the transformer core are linear; (2) the inductance of the primary coil inductance of the transformer is much larger than the converted value of the load resistance to the primary side; (3) Edge coil resistance conditions derived. They do not apply to work in the transformer core magnetic state of the range of changes, including the saturated area of the curve. This paper makes a theoretical analysis of the latter case, and obtains the expression of the relationship between the primary and secondary currents of the transformer suitable for this situation. The experimental results show that the formula is consistent with the experimental results.