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AC motor variable frequency drives-consideration of the most economic and technically viable convertor power circuits for drives above 500 kW

机译:交流电机可变频率驱动 - 考虑最经济和技术上可行的转换器电源电路,驱动器以上超过500 kW

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In the general sphere of industrial applications there has been a large increase in interest in AC variable frequency drives. The price of such systems has been gradually decreasing (with the improving capabilities of thyristors) at a time when energy costs have in general been increasing, so that it is now relatively easy to make out an economic case for driving plant at variable speed. The moves in the direction of AC drives have also been helped by the general improvement in overall efficiency and by the potential for a reduction in maintenance caused by the use of brushless systems. The author discusses three such systems: the synchro converter system using naturally commutated converters feeding brushless synchronous motors; the capacitor self-excited induction motor system; and the cycloconverter low frequency system. Future systems and briefly discussed.
机译:在工业应用的一般领域,对AC可变频率驱动有很大的兴趣增加。当能源成本一般增加时,这种系统的价格一直逐渐减少(随着晶闸管的提高),因此它对在可变速度下驾驶厂的经济案例相对容易。通过整体效率的一般提高以及通过使用无刷系统引起的维护潜力,还有助于AC驱动器方向的移动。作者讨论了三种这样的系统:使用自然换向转换器的同步转换器馈送无刷同步电动机;电容器自兴的感应电动机系统;和环形变频器低频系统。未来的系统并简要讨论过。

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