Mixed excitation synchronous motor with radial structure

A hybrid excitation synchronous and synchronous motor technology, applied in the direction of synchronous machine, magnetic circuit shape/style/structure, electrical components, etc., can solve the problem of low electric excitation efficiency, achieve simple structure, shortened axial magnetic circuit, and small size Effect

CN1767316AInactive Publication Date: 2006-05-03NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2006-05-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a radial structure mixed exciter synchronic motor which comprises: a stator formed by armature core 2 inside the casing 1 and the armature coil group 3 and a rotor formed by rotating shaft 11, rotor core 10, N-pole permanent magnet 4 and S-pole permanent magnet 6; the radial structure permanent magnet synchronic motor is formed by the stator and the rotor; the N-pole permanent magnet and the S-pole permanent magnet of the rotor are separately adhered 5 and 7 and makes the N-pole annex magnet and the S-pole annex magnet to extent with the same direction. The extent part of the rotor arranges an exciting coil group 9 and a ring-type exciting magnetic bridge 8.
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Description

1. Technical field

[0001] The invention relates to a hybrid excitation synchronous motor. 2. Technical background

[0002] The permanent magnet synchronous motor is excited by permanent magnets, which eliminates the excitation loss of the electric excitation synchronous motor and eliminates the mechanical contact device. It has the remarkable advantages of simple structure, reliable operation, high power density and high efficiency. However, the inherent difficulty in adjusting the permanent magnet magnetic field of permanent magnet motors has become a bottleneck in its application and promotion in generators and speed-regulating motors. There are both permanent magnets and excitation windings in the hybrid excitation synchronous motor, and two magnetic potential sources exist at the same time. It overcomes the defect that the magnetic field of the permanent magnet synchronous motor is difficult to adjust, and has broad application prospects in many industrial fields and mi...

Examples

Embodiment Construction

[0024] Depend on figure 1 , figure 2 with image 3 It can be seen that the composition of the radial structure hybrid excitation synchronous motor of the present invention is composed of a radial structure permanent magnet synchronous motor, a magnet conductor closely connected to the permanent magnet on the rotor surface, and an electric excitation part on one side. That is, in the radial structure permanent magnet synchronous motor composed of the stator composed of the armature winding 3 and the armature core 2 and the rotor with the rotating shaft 11 and the rotor core 10 and the surface type N pole and S pole permanent magnets 4 and 6 On the basis of the surface permanent magnet of each pole of the rotor, a tile-shaped additional magnetizer 5 and 7 is attached to the outside of each pole surface permanent magnet, the additional magnetizer corresponding to the N-pole permanent magnet and the additional magnetizer corresponding to the S-pole permanent magnet extend axial...