Hybrid excitation wind driven generator based on split magnetic steels

A technology of wind power generator and hybrid excitation, which is applied in synchronous machines, electrical components, electromechanical devices, etc., can solve the problems of large loss of excitation windings, achieve the effects of reducing magnetic flux leakage, reducing end effects, and improving utilization

Inactive Publication Date: 2018-11-23
CEEC JIANGSU ELECTRIC POWER DESIGN INST +1
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the adjustment range of the magnetic flux of the hybrid excitation motor is larger than that of the pure permanent magnet synchronous motor, the introduction of the excitation winding also brings about the problem of large losses

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
  • Hybrid excitation wind driven generator based on split magnetic steels
  • Hybrid excitation wind driven generator based on split magnetic steels
  • Hybrid excitation wind driven generator based on split magnetic steels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0029] A hybrid excitation wind generator based on split magnets, including a stator (1), a rotor (2), an armature winding (3), a DC field winding (4), a stator slot (5), and a magnet slot (6) , upper magnetic steel (7), lower magnetic steel (8), and rotor helical teeth (9), magnetic steel left stator (10) and magnetic steel right stator (11).

[0030] as attached figure 1 As shown, taking a 12-slot and 10-tooth split-magnet hybrid excitation wind turbine structure as an example, the stator (1) is designed as a modular structure, and 12 stators are arranged concentrically and equidistantly around the rotor. There are magnetic steel slots between the stators. In order to reduce the loss of the magnetic steel under the same amount of permanent magnets, the permanent magnets in each magnetic steel slot are divided into two sections, which a...

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 a hybrid excitation wind driven generator based on split magnetic steels, which comprises stators and a rotor with helical teeth. The stators are arranged concentrically aroundthe rotor, and the inside ends of the stators are next to the helical teeth; magnetic steel grooves are formed between the stators, and magnetic steels with different polarities are respectively arranged at both ends of the magnetic steel grooves to form magnetic steel pairs; exciting windings are arranged between the magnetic steels to form stator permanent magnetic steels, and the stator permanent magnetic steels are alternatively arranged in a N->S form; and stator grooves are formed in the stators, and armature windings are arranged in the stator grooves. By dividing each permanent magnetinto both upper and lower sections, permanent magnet loss, eddy-current loss and magnetic hysteresis loss are reduced, an iron core utilization rate of the stators is improved, and a counter potential amplitude of the generator is increased; by the armature windings, armature copper loss is reduced; by the exciting windings, an end effect of the generator is reduced, and meanwhile, loss is reduced; moreover, a direct current cannot be coupled with the armature windings, so that a counter potential waveform of the generator is not influenced; by the closed magnetic steel grooves, leakage fluxis reduced, so that a utilization rate of the permanent magnets is improved; and by double excitation, power supply quality of a motor is ensured.

Description

technical field [0001] The invention relates to a generator, in particular to a hybrid excitation wind power generator based on split magnets. Background technique [0002] Nowadays, energy is the first driving force of social development, but the massive use of traditional fuels not only causes the decrease of these energy sources, but also brings a series of environmental problems such as air pollution and greenhouse effect. [0003] Therefore, the gradual transition from traditional energy to renewable clean energy is the general trend of energy development. The power source of wind energy is atmospheric movement, which is inexhaustible and will not cause any environmental problems. It is an ideal renewable energy source. [0004] The core component of wind power generation is the wind generator, among which the hybrid excitation wind generator is one of the main research directions. [0005] The hybrid excitation wind turbine adds a set of excitation windings to the tr...

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): H02K21/38H02K21/04
CPCH02K21/04H02K21/38
Inventor 张震韩学栋樊英瞿广宇王武森王海华陆冉陈昕李奔潘磊陈琦谢伟
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products