| 摘要 |
<p>1,080,710. Control of several motors; equalizing loads. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. Nov. 25, 1964 [Nov. 29, 1963; July 28, 1964], No. 47928/64. Headings H2H and H2J. A number of induction machines 3 are supplied from three-phase source 1 through thyristors 2, the rotor energy being fed to D.C. mains 6 through rectifier 4 and pulse transformer 5. The D.C. mains are also supplied from the source 1 through transformer 7 and rectifier 8, inverter 9 allowing feed-back of power to the three-phase source. A capacitor 10 absorbs harmonic currents from the inverter. A load on the D.C. bus-bars may comprise D.C. motor 11 associated with pulse converter 12, or a squirrel cage motor 13 with pulse inverter 14. A ballast resistor 16 is adapted to be connected to the mains 6 through excess-voltage electronic switch 17. Pulse converters 18, 19, supply the armature 21 and field winding 20 of a D.C. motor.</p> |
