Complex analysis of electromagnetic machines for vibro-impact technologies

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Neyman, L.A.^1 ; Neyman, V.Yu.^1

Novosibirsk State Technical University, 20, Karl Marx Av., Novosibirsk

630073, Russia^1

关键词: Current amplitude;    Engineering solutions;    Forced oscillations;    Linear synchronous;    Mechanical oscillations;    Mechanical shock;    Rock destruction;    Synchronous machine;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/3/032026/pdf
DOI  :  10.1088/1755-1315/87/3/032026

来源: IOP

【 摘 要 】

For the implementation of high-energy impulse technologies of mechanical shock methods of secondary rock destruction, electromagnetic machines of vibro-impact action are of particular interest. Linear synchronous electromagnetic impact machine designs as a part of progress trend are considered where the head reciprocal motion is synchronized with 50 Hz power source pulses frequency applied to a winding or a system of windings. On the basis of identified differences of the head forced mechanical oscillation processes, merits and demerits of the work cycles of single or two-winding synchronous machine design variants are analyzed. Synchronous electromagnetic machines of a new design and principles of their control in a work cycle are presented. The specific half-wave interleaving of voltages applied to the windings allows reducing current amplitude and the influence of the impact drive on the power grid. To improve forced oscillation mode stability and precision, the new engineering solutions improving machines performances and exploitation conditions are proposed.