Cage Barrier Assembled Outer Rotor Stator Double Winding AC Motor and Its Control Method

Abstract

The invention relates to a cage barrier spliced outer rotor stator double-winding alternating current motor. The motor is characterized in that an outer rotor is arranged outside a stator, a three-phase symmetry power winding and a control winding are arranged in slots on the surface of the outer side of the stator, and the same cage outer rotor modules are connected with a sleeve through outside positioning slots and spliced in a circumferential direction to form the outer rotor with salient pole types; the inner surface of each cage barrier outer rotor module is provided with radial trapezoid-shaped slots which have multiple different step slot widths, and short circuit cage bars are arranged in the slots; after the adjacent rotor modules are spliced, common trapezoid-shaped slots are formed on connection parts and have multiple different step slot widths along a radial direction, gaps of the bottoms of the slots reach the inner surface of the sleeve, and common cage bars are arranged in the slots; and the invention aims to provide the novel cage barrier combined outer rotor stator double-feed alternating current motor which is convenient to process and manufacture, ensures that the coupling capacity of two windings of the stator is optimized, and has the high power density and the excellent steady state and dynamic performance.

Description

Technical field: [0001] The invention relates to an AC motor, in particular to a cage-barrier-assembled outer-rotor-stator double-winding AC motor and a control method thereof. The motor can be operated as a motor or as a generator. Background technique: [0002] Cage assembly outer rotor stator The stator of the double-winding AC motor includes three-phase symmetrical power windings with 2p poles and three-phase symmetrical control windings with 2q poles (or three-phase symmetrical power windings with 2q poles and three-phase symmetrical control windings with 2p poles ), and satisfy 2p-2q≥4, the coupling between two sets of windings is by p r =p+q is achieved by a specially designed rotor for poles, so the rotor structure of this type of motor will have an important impact on the steady-state performance, dynamic characteristics and power density of the motor. The rotor structures that can be used for this type of motor mainly include two types: wound type and reluctance ...

AI Technical Summary

Problems solved by technology

The radial laminated salient pole reluctance rotor with cogging is easy to process, but the coupling effect on the two sets of stator windings is not good; the axial laminated reluctance rotor has strong coupling ability, but the manufacturing process is complicated. Difficult to use in AC motors

In addition, conventional stator double-winding AC motors are greatly affected by uncertain parameter changes and disturbances, and have weak anti-interference capabilities.

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