电动钻机的工作理论基础(二)--系列专题之七

近年来，电驱动已成为石油钻机的主要驱动形式，是钻机自动化、智能化的坚实平台。文章就电动钻机的部分工作理论作初步剖析，包括钻机工作机组对电驱动的要求，可控硅直流电驱动和交流变频电驱动的工作原理，直流电动机和交流变频电动机等的特性分析，电动机的四象限运行和能耗制动原理等。

The working theories fundamental of electrical drilling rig(Part Ⅱ)--Special topic sec. Ⅶ

The electrical drive has been the main form for oil drilling rig recent year.It become the rigit platform of approaching automation and intelligency.In this artical partial working theories of electrical drilling rig was analysed initially, such as the requirments of electrical drive for the working machine,the working principles of SCR DC drive and VFD AC drive,analysis of characters of DC and AC motors,the four quadrant motion and principles of energy brack etc.