ASYNCHRONOUS ELECTROMECHANICAL POWER CONVERTER Russian patent published in 2023 - IPC H02K17/28 

FIELD: electrical engineering.

SUBSTANCE: asynchronous electromechanical power converter contains a fixed stator, the laminated magnetic circuit of which has the shape of a hollow cylinder with grooves on the inner surface, in which a three-phase symmetrical mains winding and three additional coils are placed, a cylindrical rotor installed inside the stator, and three capacitors included in the circuit of additional coils. The axes of the phases of the network winding and the axes of the additional coils are aligned in space, the ends of the phases of the network winding are connected to each other at a neutral point, and the beginnings are connected to a three-phase voltage supply network, while a three-phase symmetrical compensation winding is formed from the additional coils by connecting the ends of the coils to a common neutral point. The capacitors in the compensation winding circuit have capacitances of the same size, are connected according to the “triangle” scheme, the vertices of which are connected to the beginnings of the additional coils of the compensation winding. The number of turns in the additional coils of the compensation winding is with the equivalent capacitance of the capacitors and the number of turns of the mains winding in the following ratio:

, where w_k is the number of turns in the phase of the compensation winding; w_c - number of turns in the phase of the mains winding, w_c = s_conductor⋅z₁ /6a, s_conductor - the number of effective conductors in the slot, z₁ - the number of stator slots, a - the number of parallel branches of the stator mains winding; P, U,η , - nominal values of active power, line voltage and energy indicators of an asynchronous electromechanical energy converter; f is the frequency of the supply voltage; C is the capacitance of the beam of the equivalent capacitance star.

EFFECT: increasing the degree of compensation of magnetizing currents.

1 cl, 4 dwg