Modular single-cage barrier rotor double-stator self-excitation synchronous motor and control method thereof

Abstract

The invention relates to a modular single-cage barrier rotor double-stator self-excitation synchronous motor. The motor is characterized in that an inner stator and an outer stator are arranged inside and outside a rotor; a three-phase symmetry armature winding and a single-phase symmetry exciting winding are arranged in slots of each stator, which are near the rotor; cage barrier rotor modules and a sleeve are combined through positioning slots to form a rotor of which inner and outer sides have salient pole types on each of the inner and outer surfaces of the rotor; a plurality of radial trapezoid-shaped slots are formed on the surface of the side of each cage barrier rotor module, which is near the stators and have multiple different step slot widths, and short circuit cage bars are arranged in the slots; a step-shaped opening is formed on a connection part of the adjacent cage barrier rotor modules; after the modules are spliced, common trapezoid-shaped slots are formed on connection parts of the spliced modules, gaps of bottoms of the slots reach the surface of the sleeve, and common cage bars are arranged in the slots; and the invention aims to provide the novel modular single-cage barrier rotor double-stator self-excitation synchronous motor which is convenient to process and manufacture, can realize stator-side self excitation, and has high reliability, and the excellent steady state and dynamic performance.

Description

Technical field: [0001] The invention relates to a synchronous motor, in particular to a modular single-cage barrier-rotor double-stator self-excited synchronous motor. The motor can be operated as a motor or as a generator. Background technique: [0002] The modular single-cage rotor double-stator self-excited synchronous motor has 2 stators, each stator has a single-phase symmetrical armature winding with 2p poles and a three-phase symmetrical field winding with 2q poles (or a three-phase symmetrical motor winding with 2q poles pivot winding and single-phase symmetrical excitation winding with 2p poles), and satisfy 2p-2q≥4, the coupling between the two sets of windings is by p r =p+q is achieved by a specially designed rotor for poles, so this type of motor does not need to install brush slip rings, and can realize electromechanical energy conversion through the interaction between the magnetic field of the excitation winding and the magnetic field of the armature windin...

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, the control system of conventional stator double-winding AC motors is greatly affected by uncertain parameter changes and disturbances, and has disadvantages such as poor anti-interference ability

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