襄樊铁路枢纽给水加压站微机自控恒压变频调速设计

阐述了襄樊铁路构纽给水加压站微机自控恒压变频调速设计的过程及微机自控的系统构成。

煤矿开采中运输机的变频调速分析

基于变频控制特点的了解,结合案例煤矿的DSJ150/60/2×125kW运输机应用,进行变频调速控制系统方案的设计,具体从硬件、软件角度开展讨论。最后对运输机变频调速方案进实际应用,可以有效优化运输机的运行速度,有着良好的节能降耗特点并能提高智能化水平,能满足矿企的可持续绿色发展需要。

The performance analysis and calculation for variable frequency speed control motors with the rotor structure optimized

In the paper, the method to optimize the rotor structure in variable frequency speed control motors is introduced. The saturation and the skin effect are considered and 2D no-load and load electromagnetic field is calculated in finite elements for a variable frequency speed control motor before and after optimization. Finally, no-load current and operation performance before and after optimization are obtained and the two results are contrasted.