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

Three-switch type power converter

A three-switch, converter technology, applied in the direction of electronic commutation motor control, electrical components, control systems, etc., can solve the problems of unfavorable switched reluctance motor performance, small winding mutual inductance, etc., to improve commutation performance and increase output power. , the effect of reducing radial force

Inactive Publication Date: 2009-02-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the winding mutual inductance of the switched reluctance motor is very small, and the energy cannot be transferred to the next working phase by using the winding mutual inductance coupling. The phase current of the switched reluctance motor has no natural zero crossing point. If a converter with unipolar output is used, forced commutation, this freewheeling method is not conducive to the performance of the switched reluctance motor system

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
  • Three-switch type power converter
  • Three-switch type power converter
  • Three-switch type power converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as figure 1 As shown, each phase circuit of the three-switch power converter of the switched reluctance motor includes two switching elements and two diodes, and the switching element S 1 with motor coil L 1 in series, the switching element S 2 with motor coil L 2 In series, the cathode of the diode D1 is connected to the positive pole of the power supply, and the switching element S 2 with motor coil L 2 Between; the anode of the diode D2 is connected to the negative pole of the power supply, and the cathode is connected to the switching element S 3 with motor coil L 1 between the two series connected motor coils L 1 and L 2 A controllable switching device S is connected in series between 3 , and at the controllable switching device S 3 Add a diode D between both ends and the positive and negative poles of the power supply 3 、D 4 As an auxiliary diode, where the diode D 3 The cathode is connected to the positive pole of the power supply, and the anode ...

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

A power converter of three switches type is prepared as series-connecting a controllable switching element between coils of two series connected motors, adding a diode separately between two end of said switching element and positive as well as negative electrodes of power supply and using it as auxiliary diode, connecting cathode of a diode to positive electrode of power supply and anode of it between motor coil and controllable switching element, connecting anode of another diode to negative electrode of power supply and cathode of it between motor coil and controllable switching element.

Description

1. Technical field [0001] The invention relates to a power converter, in particular to a power converter suitable for switched reluctance motors. 2. Background technology [0002] The structure of the switched reluctance motor is simple, the rotor has no windings, no permanent magnets, the stator has only concentrated windings, and the supporting switching circuit is not complicated. It has high efficiency, convenient control, excellent speed regulation performance, good reliability, and can be used in harsh environments. It is one of the hotspots in motor research at present. [0003] In actual use, the current of each phase of the switched reluctance motor maintains a certain phase sequence and a certain on-off time according to the closed-loop control of the position. When the phase is commutated, the motor quickly feeds back energy to the power supply, and the phase winding current rapidly decays to zero, otherwise negative torque will be generated. Since the motor rot...

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 Patents(China)
IPC IPC(8): H02P25/18H02K11/00H02P6/00H02K11/20H02P25/086H02P25/092
Inventor 刘闯周强朱学忠
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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