Cage barrier spliced outer rotor stator electro-magnetic synchronous motor and control method thereof

Abstract

The invention relates to a cage barrier spliced outer rotor stator electro-magnetic synchronous motor and a control method thereof. The motor is characterized in that an outer rotor is positioned outside a stator, a three-phase armature winding and a single-phase exciting winding are arranged in slots of the outer surface of the stator, and the same cage barrier outer rotor modules are connected with a sleeve made of a non-permeability magnetic material through positioning slots and spliced in a circumferential direction to form the outer rotor with inner salient pole types; the inner surface of each cage outer rotor module is provided with radial trapezoid-shaped slots which have multiple step slot widths along a radial direction, 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 of the modules, gaps of the bottoms of the slots reach the inner surface of the sleeve, the slots have multiple step slot widths along the radial direction, and common cage bars are arranged in the slots; and the invention aims to provide the cage barrier spliced outer rotor stator electro-magnetic synchronous motor which is convenient to process and manufacture, can realize the stator-side excitation, and has high power density and the excellent steady state and dynamic performance.

Description

Technical field:

[0001] The invention relates to a synchronous motor, in particular to a cage-barrier assembled outer rotor stator electric excitation synchronous motor and a control method thereof. The motor can be operated as a motor or as a generator. Background technique:

[0002] The stator of the cage-assembled outer rotor stator electric excitation synchronous motor includes a three-phase symmetrical armature winding with 2p poles and a single-phase symmetrical excitation winding with 2q poles (or a three-phase symmetrical armature winding with 2q poles and a single-phase symmetrical armature winding with 2p poles excitation winding), 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 m...

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