TRACTION ELECTRIC DRIVE Russian patent published in 2017 - IPC H02P27/06 B60L9/18 H02M7/525 H02K17/30 

FIELD: electricity.

SUBSTANCE: traction electric drive contains input terminals A, B, C for connecting a direct current feeder, switching elements and an electric motor including a rotor surrounded by a stator containing three-phase windings. The three-phase windings are designed to provide, in conjunction with the corresponding switching elements, the modulation of the electric power parameters of the supply network direct current. The stator has three equally executed parts, which are arranged in series along the short-circuited rotor. Each of the stator parts includes two three-phase windings. In each of the parts, the initial terminals of the phase windings of one three-phase winding and the ends of the phase windings of the other three-phase winding are connected to the corresponding input terminals A, B and C, and the other terminals of each of the three-phase windings are connected to the switching element corresponding to this three-phase winding. One of the input terminals is connected to the positive terminal of the power supply, and the other two - to the negative terminal of the latter. The switching element is made in the form of a three-phase diode bridge with an electronic switch in the DC circuit. Phase windings of the three-phase windings of one part of the stator are connected in series to the input terminals A, B, C, respectively, and the phase windings of the three-phase windings of the other stator parts are connected in series to the input terminals B, C, A and C, A, B.

EFFECT: expanding the functionality, areas of use, and reducing the mass-dimensions of the frequency drive.

8 cl, 4 dwg