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Mixed excitation synchronous motor

A technology of hybrid excitation synchronous and synchronous motors, which is applied in the direction of electrical components, electromechanical devices, magnetic circuit rotating parts, etc., can solve the problems of low efficiency of electric excitation, and achieve the effects of high efficiency of electric excitation, optimized design, and best energy-saving effect

Inactive Publication Date: 2004-11-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the existence of axial magnetic circuit, the efficiency of electric excitation is low

Method used

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  • Mixed excitation synchronous motor

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Embodiment Construction

[0015] Depend on figure 1 It can be seen that the composition of the hybrid excitation synchronous motor of the present invention is composed of two parts: the permanent magnet excitation synchronous motor on the left and the electric excitation synchronous motor on the right. The two parts of the motor are mounted on the same rotating shaft 8 and have the same number of rotor pole pairs. The rotor 4 of the electrically excited synchronous motor is provided with an excitation winding 5, and a pair of brushes 6 and a pair of slip rings 7 are also provided on the rotating shaft 8. To provide excitation power for the field winding, the armature winding 10 on the stator of the permanent magnet excitation synchronous motor and the armature winding 3 on the stator of the electric excitation synchronous motor are connected in series, and the stator core laminations of the two parts of the synchronous motor also have the same size.

[0016] Working principle of hybrid excitation synch...

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Abstract

The invention relates to a mixed exciter synchronous machine, composed a PM (permanent magnet) synchronous machine and an electric excited synchronous machine, and placed in a case, where there is an exciting winding set on the rotor of the electric excited synchronous machine and a pair of electric brushes and a slide ring mounted on the rotating shaft, and the PM synchronous machine stator armature windings connects in series with those of the electric excited synchronous machine. Compared with the existing techniques, it has no axial / radial magnetic circuit and additional air gap, but low magnetic leakage and high electric exciting efficiency, convenient for structural design optimization and achieving the optimum energy-saving effect. The exciting current can be controlled, bidirectionally and meeting broad running speed requirements.

Description

technical field [0001] The invention relates to a hybrid excitation synchronous motor Background technique [0002] In 1988, Professor Balagunov of the Moscow Aeronautics Institute proposed the structure of a parallel magnetic potential hybrid excitation synchronous generator. The stator is the same as the ordinary synchronous motor, and the rotor is divided into two parts, one part is permanent magnet excitation, and the other part is electric excitation. The characteristics of the motor: the electric excitation part is a claw pole structure, there are many additional air gaps, the axial magnetic circuit has large magnetic flux leakage, and the electric excitation function is restricted. [0003] Dr. T.Mizuno of Japan proposed an axial / radial magnetic circuit hybrid excitation synchronous generator. The stator armature winding of the motor is a common three-phase symmetrical winding. The stator core is divided into two sections by the stator annular DC excitation winding....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K16/02
Inventor 严仰光陈志辉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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