Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Automobile Lundell motor AC-generator

A technology of alternator and claw pole, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit static parts, magnetic circuit rotating parts, etc., can solve the problems of high harmonic current and large harmonic magnetic field, etc. Achieve the effects of reducing torque ripple, output rectified voltage waveform stability, and improving the quality of DC power supply

Inactive Publication Date: 2009-09-09
HUNAN UNIV
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems caused by the high-order harmonic current and large harmonic magnetic field generated by the existing claw-pole three-phase synchronous alternator, the present invention proposes an automobile claw-pole alternator device with rectification load

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
  • Automobile Lundell motor AC-generator
  • Automobile Lundell motor AC-generator
  • Automobile Lundell motor AC-generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] see figure 1 , figure 1 It is a schematic diagram of the distribution of the stator and rotor of the double-winding motor in the present invention. exist figure 1 , the two sets of windings are separated by an electrical angle of 30°. A, B, C, U, V, W respectively represent the three-phase windings of the two separate windings of the stator. ar, br, cr represent the equivalent three-phase rotor winding. When the speed of the automobile engine reaches the speed of building pressure, the rotor is driven to rotate to generate a rotating magnetic field, and the double windings in the stator move to cut the magnetic force lines respectively, generating an induced potential. Since the phases of the fundamental magnetic field in the winding are the same, the 5th and 7th harmonics generate 150° and 210° phase differences respectively. And because the 5th harmonic is a negative sequence harmonic, and the 7th harmonic is a positive sequence harmonic, so the 5th and 7th harmo...

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 automobile Lundell motor AC-generator which comprises stator windings and a rectification circuit, wherein two sets of the stator windings which are of symmetrical triphase structures are isolated at an electrical degree of 30 degrees; the two sets of stator windings are connected by a star-shaped way, and two Y windings are output in series by respective rectifier bridges. The invention completely eliminates fifth time frequency harmonics, seventh time frequency harmonics, fifth spatial harmonics and seventh spatial harmonics in the air-gap field of the generator by adopting the structure of double-Y 30-degree stator windings, thereby reducing the torque pulsation of the generator, lowering electromagnetic noise, enhancing the efficiency and enabling the performance of the generator and a system to have a greater improvement.

Description

technical field [0001] The invention relates to a generator device, in particular to an automobile claw pole alternator device. Background technique [0002] Most of the automotive alternators are claw-pole three-phase synchronous alternators, which are driven by the engine, and the three-phase alternating current generated is converted into direct current through three-phase bridge diode rectification, which supplies power to the on-board electrical equipment and charges the battery. Traditional electrically excited claw pole motors have been widely used as the source of electric energy for automobiles. Due to their simple process, manufacturing cost far lower than synchronous motors of the same power, and high operational reliability, they have been widely used in automobiles, aviation and other fields. But it has many defects, such as too much magnetic flux leakage, significantly lower efficiency than conventional synchronous motors, and a large number of high-order harmo...

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
IPC IPC(8): H02K1/16H02K1/22H02K3/28
Inventor 罗隆福张志文许加柱董书大熊芝耀黎涛
Owner HUNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com