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

Magnetic enhancing boosting double-excitation winding compound doubly salient electric-excitation generator

A technology of electric excitation doubly salient poles and excitation windings, which is applied to synchronous generators and other directions, can solve the problems of increasing the excitation loss of the excitation system, large output DC voltage pulsation, and limiting doubly salient pole motors, so as to reduce current harmonics, Low voltage regulation and excitation loss, reducing the effect of voltage ripple

Inactive Publication Date: 2014-05-14
JINAN JIMEILE POWER SUPPLY TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by factors such as phase winding inductance and full-wave rectifier diode commutation, the output voltage of a doubly salient generator using a full-wave rectifier decreases as the load increases. Common electrical equipment always expects the supply voltage to remain constant, and the generator excitation The regulation system keeps the terminal voltage constant by increasing the excitation current, thus increasing the excitation loss of the excitation system; at the same time, for the electrically excited double salient pole motor, due to the influence of the cogging effect of the salient pole, when operating as a motor, the torque Large pulsation; when working as a generator, there is also the defect of large output DC voltage pulsation, which greatly limits the application of double-salient pole motors in wide-speed operation conditions, especially low-speed operation and high-power applications; The salient pole generator is used in a wide speed operating state, especially in the case where the speed change is relatively large and changes rapidly. When the post-stage load is a power conversion device, the transient peak voltage on the winding structure of the traditional star-delta connection is relatively high. easy to damage insulation

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
  • Magnetic enhancing boosting double-excitation winding compound doubly salient electric-excitation generator
  • Magnetic enhancing boosting double-excitation winding compound doubly salient electric-excitation generator
  • Magnetic enhancing boosting double-excitation winding compound doubly salient electric-excitation generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Due to different phase numbers and different structural forms, the structure of the electrically excited double-salient pole generator with double-excitation double-excitation winding compound excitation is similar to that of the 3-phase 6 / 4 structure electrically-excited double-salient pole motor. A doubly salient motor is used to illustrate a specific implementation. The double excitation winding of the magnetizing boost booster is compound-excited

[0016] The electrically excited doubly salient generator includes excitation winding 1, stator core 2, phase winding 3, rotor core 4, rotor connecting shaft 5, diodes and capacitors, and the three-phase windings A, B, and C of the electrically excited doubly salient generator are End open circuit winding, the positive direction of the potential of the phase winding and the positive direction of the exciting magnetic flux conform to the positive right-handed spiral relationship, the positive direction of the potential of t...

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 relates to a magnetic enhancing boosting double-excitation winding compound doubly salient electric-excitation generator. According to the doubly salient electric-excitation generator, tail ends of three phase windings A, B and C are open circuit windings, each phase winding is respectively connected with a diode and a capacitor, a dotted terminal of each phase winding is respectively connected with an anode of the diode, a cathode of the diode is connected with a positive electrode of the capacitor, the other end of the each phase winding is connected with a negative electrode of the capacitor, for three independent rectifier filter portions, according to the positive and negative relation of the capacitors, sequentially, a negative electrode of an A-phase capacitor Ca is connected with a positive electrode of a B-phase capacitor Cb, and a negative electrode of the B-phase capacitor Cb is connected with a positive electrode of a C-phase capacitor Cc. The doubly salient electric-excitation generator is characterized in that one end of a first excitation winding Lf1 is connected with a positive electrode of the A-phase capacitor Ca, the other end of the first excitation winding Lf1 is used as a positive electrode or a negative electrode of the generator to connect with a load, and two ends of the second excitation winding Lf2 are connected with a direct current excitation voltage source Uf.

Description

technical field [0001] The invention belongs to the technical field of generators, and in particular relates to an electric excitation double salient pole generator compound-excited by magnetization boosting double excitation windings. Background technique [0002] Both the stator and the rotor of the electric excitation double salient pole motor are of salient pole structure, which belongs to the variable reluctance motor, and does not require a rotor position sensor and a power converter, and the system reliability is high. The electrically excited doubly salient motor replaces the permanent magnet with the excitation winding, so that the excitation magnetic field of the motor can be adjusted. There are no windings and permanent magnets on the rotor, the structure is very simple, the operation is reliable and the cost is low; when the load of the generator changes, the excitation current in the excitation winding can be adjusted to maintain a constant voltage output, whic...

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): H02K19/36H02K19/24
Inventor 于功山张军刚谈学超张卓鸿张文昌王怀杰刘海鹏
Owner JINAN JIMEILE POWER SUPPLY TECH
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