Scattered wire winding motor

Abstract

The invention discloses a scattered wire winding motor, which belongs to the technical field of motors, and is characterized in that when two stator coils are connected in series, transposition is carried out according to the inductance of parallel winding conductors, so that the inductance difference between M series conductors obtained by series connection is minimum; a wiring board is also fixed at one end where the wire outlet terminal is located, and a wiring board is located between the stator and the end cover and is in close contact with the end parts of the stator coils; the wiring board comprises a fixing ring and a plurality of wiring boxes arranged on the outer surface of the fixing ring in the circumferential direction, wiring grooves with circumferential openings are formed in the wiring boxes, and wiring copper bars are arranged in the wiring grooves; the wiring copper bars are arranged in a step shape in the axial direction; heat dissipation ribs are arranged on the circumferential outer surfaces of the wiring boxes; the M parallel-wound conductors in the stator coils are arranged according to an arrangement mode of enabling the parallel-wound conductors in the stator coils to be layered at least in the groove depth direction; and a stator notch is provided with a large arched slot wedge. According to the invention, the circulation between parallel winding conductors in the scattered wire winding motor can be effectively reduced, and the alternating current copper loss is inhibited.

Description

technical field [0001] The invention belongs to the technical field of motors, and more specifically relates to a loose-wire winding motor. Background technique [0002] Due to its advantages in efficiency, power density and high reliability, permanent magnet motors are being widely used in new energy-related industries to promote a new round of electrification. The loose-wire winding motor is to embed one or more parallel-wound wires in the stator slot of the permanent magnet motor along the radial direction, and form a multi-turn structure around the stator teeth to serve as the motor coil for energy exchange with the rotor magnetic field. Medium, because of its simple and reliable processing technology and low manufacturing cost, is widely used in the field of motors, especially commercial motors. [0003] The traditional off-line process applied to loose-wire winding motors has a strong randomness, ignoring the shaping and layout of the conductor arrangement, making the...

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Problems solved by technology

[0004] However, since the wires of the loose-wire motor are messy in the off-line, it is difficult to guarantee a significant effect by using the method of twisting the end 180 degrees. Therefore, this transposition method applied to high-power flat-wire motors is used in loose-wire motors. Rarely, when applied to loose-wire motors, it cannot achieve a good effect of suppressing AC copper loss

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