交-直-交矿井提升传动系统中定子变压器的功率计算与探讨

Calculation and Discussion of Power of Stator Transformer in AC-DC-AC Driving System of Mine Hoist

分析研究了交-直-交矿井提升变频调速传动系统中定子变压器的功率计算问题,推导出了交-直-交变频调速传动系统中提升电动机和定子变压器的功率计算公式,以实例说明了提升电动机和定子变压器的功率计算方法,并得出了交-直-交矿井提升变频调速传动系统中变压器的功率选择与品牌及控制方式无关,仅与提升机的转矩、提升速度、电动机和变频器的功率因数以及传动系统的效率有关的结论。

The paper analyzed and researched power calculation of stator transformer in AC-DC AC driving system of frequency-conversion speed-regulation of mine hoist, inferred power calculation formulas of hoisting motor and stator transformer in AC-DC-AC driving system, and took two examples to explainpower calculating methods of hoisting motor and stator transformer. Finally, it got a conclusion that power selection of transformer in AC-DC-AC driving system has nothing to do with brand and control mode, but has relation to torque of hoist, hoisting speed, factors of motor and converter and efficiency of driving system.