Title :
Starting way of electric commutator motor and scheme of its realization
Author :
Ogorodnikov, D.N. ; Yaroslavtsev, Evgenii V.
Author_Institution :
Tomsk Polytech. Univ.
Abstract :
The processing of welds at welding tubes of oil and gas pipelines now is carried out with a polishing machine powered by 220 V, 50 Hz. But, under field conditions, a source of electrical energy is the welding outfit. There is a problem of conversion of constant voltage of a welding outfit into alternate with given parameters. It is known, that at actuation of an electric tool, there is an impact current, since the braked electric motor has small electric resistance. Such a launch is harmful to the engine, and under conditions where there is an input source of restricted power comparable to power of the electric motor, it is impossible. One solution to this problem is an increase of power of the converter, that results in application of more potent power keys and other circuit components, i.e. increase of weight and overall dimensions of the device. The second way is providing a smoothly varying launch of the engine of an electric tool. Though the response time of the engine is also augmented, it succeeds in avoiding the deficiencies of the previous version
Keywords :
commutator motors; machine control; machine tools; natural gas technology; oil technology; polishing; power convertors; power supplies to apparatus; starting; welding; 240 V; 50 Hz; electric commutator motor; electric machine tool; power conversion; response time; smooth starting method; weld polishing machine; Circuits; Commutation; Electric motors; Electric resistance; Engines; Petroleum; Pipelines; Polishing machines; Voltage; Welding;
Conference_Titel :
Modern Techniques and Technology, 2000. MTT 2000. Proceedings of the VI International Scientific and Practical Conference of Students, Post-graduates and Young Scientists
Conference_Location :
Tomsk
Print_ISBN :
0-7803-5789-2
DOI :
10.1109/SPCMTT.2000.896056