Unlock instant, AI-driven research and patent intelligence for your innovation.

Electric excitation synchronous motor

A technology of synchronous motor and electric excitation, which is applied in the direction of synchronous machine, synchronous machine parts, electrical components, etc., can solve the problems of complex system structure and reduced reliability, and achieve the goal of improving control performance, increasing reliability, and eliminating excitation loss Effect

Inactive Publication Date: 2011-01-26
SHANGHAI DIANJI UNIV
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In summary, the motors in the prior art either have reduced reliability due to the presence of brushes and slip rings, or although the brushes and slip rings have been eliminated, the exciter is still required to provide excitation current, which makes the entire system structure more complicated. complex

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric excitation synchronous motor
  • Electric excitation synchronous motor
  • Electric excitation synchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] Specific embodiments of the present invention will be explained in detail below in conjunction with the accompanying drawings.

[0055] refer to Figure 4 , an electric excitation synchronous motor according to the present invention includes a stator 410 and a rotor 420, an armature winding 430 and an electric excitation winding 440, and a front end cover 461 and a rear end cover 462. The electric excitation synchronous motor also includes a The annular magnetic bridge 441 of the electric excitation winding 440 is installed, and the annular magnetic bridge 441 is fixed on the rear end cover 462 .

[0056] continue to refer Figure 4 , the rotor 420 includes a rotating shaft 421 and the permanent magnets 422 expanding and extending and permanent magnets 423 contracting and extending arranged on the rotating shaft 421 in a staggered manner. The outwardly extending permanent magnet 422 has an outer extending end 425 and an outer magnetic pole 426 , and the inwardly extendi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an electric excitation synchronous motor, which comprises a stator, a rotor, an armature winding, an electric excitation winding, a front end cover and a rear end cover. An annular magnetic conducting bridge embedded into the electric excitation winding is fixed on the rear end cover. The electric excitation synchronous motor saves an electric brush and a slip ring, reduces mechanical loss, meanwhile eliminates excitation loss and improves the running reliability of the motor. The electric excitation synchronous motor can be widely applied to a power generation system of an automobile, an airplane, a ship and the like, also can be used for wind power generation, and also can be used as a driving motor for an electric bicycle, an automobile and the like.

Description

technical field [0001] The invention relates to an AC synchronous motor, in particular to an electric excitation synchronous motor. Background technique [0002] According to different ways of supplying excitation current, there are currently four types of electrically excited synchronous motors: [0003] (1): A synchronous motor whose field current is supplied by a DC generator. The principle of this system is as figure 1 . Adjusting the excitation resistance 13 of the exciter can change the terminal voltage of the DC exciter 12 , that is, the excitation voltage and the excitation current of the synchronous generator 11 can be changed. [0004] The performance of the synchronous motor supplied by the DC generator with the excitation current is unstable when the shunt exciter operates at low voltage, and the terminal voltage adjustment is not sensitive enough. Although this shortcoming can be overcome by changing to a separate excitation type, a DC power supply is require...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/00H02K1/27H02K21/02
Inventor 常守亮赵朝会袁龙生邵士良张迪严晓霞李全峰
Owner SHANGHAI DIANJI UNIV