THE TWO-PHASE TRACTION ASYNCHRONOUS ELECTRIC DRIVE FOR CONTACT ELECTRIC LOCOMOTIVES FOR ORE MINES

The article presents the research and proposed a future structure of traction electric drive alternative current mine electric locomotive. Proposed probabilistic-statistical method to determine the real parameters of the distribution an electric loads of traction electric drives. Found a direct correspondence generalized parameters of three-phase and two-phase asynchronous machine, which makes them equivalent. Analyzed the forms of current and voltage at latitudinal-impulsive modulation voltage regulation power traction electric motors. Presents a comparative evaluation of variants of structure traction electric drives, which mainly differ in the structure and characteristics of the inverters. In compari-son with the conventional three-phase inverter has a smaller volume by 35%, is less than half the loss is 10% less than the cost of components is, 33% higher reliability than two-phase inverter. Research on computer models of two-phase asynchronous traction electric drive with latitudinal-impulsive modulation voltage allowed to confirm the expected results obtained from analytical studies, and to establish that the optimal control law of latitudinal-impulsive modulation should be considered as a trapezoidal because it has minimal distortion features current and voltage curves.