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

Variable speed motor

A variable speed motor and motor technology, applied in the direction of DC motor speed/torque control, electromechanical devices, control systems, etc., can solve the problems of increased cross-sectional area, reduced efficiency, minimum speed limit, etc., to reduce production costs and reduce air gaps Flux density, the effect of reducing electromagnetic vibration noise

Inactive Publication Date: 2010-10-13
LG ELECTRONICS INC
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, the above-mentioned pole-changing single-phase induction motor uses four windings for pole-changing operation, the cross-sectional area of ​​the slot (slot) is increased, and the efficiency of the motor is greatly reduced due to the increased stator core loss (core loss), and the achievable Minimum shifting is also limited, making it difficult to extend the shifting range

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
  • Variable speed motor
  • Variable speed motor
  • Variable speed motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or similar elements are denoted by the same reference numerals even though they are drawn in different drawings. In the following description, a detailed description of known functions and structures incorporated herein will be omitted when it would obscure the gist of the present invention.

[0044] Hereinafter, preferred embodiments of a variable speed motor according to the present invention will be described with reference to the accompanying drawings.

[0045] The variable speed motor according to the present invention is a single phase induction motor to which a single phase AC power signal is applied. In the case of an external rotary motor in which the rotor is installed outside the stator, the rotational radius of the external rotary motor is larger than that of the internal rotary motor, so that the tor...

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 variable speed motor includes first and second main windings wound on a stator, and a relay for performing a switching operation between serial / parallel connections of the first and second main windings to control motor speed. The variable speed motor further includes a tap winding connected in series to the main windings, or an additional capacitor, such that it can greatly extend the range ofa variable speed without using a drive unit capable of changing the motor speed at an external location, resulting in reduced production costs of the motor, reduced electromagnetic vibration noise, and reduced power consumption.

Description

technical field [0001] The present invention relates to a variable speed motor, and more particularly to a variable speed motor for use in a motor capable of receiving single-phase alternating current (AC) electricity, comprising: a plurality of windings mounted on a stator of the motor to form poles and a relay (relay) that connects these windings to each other in series or parallel to control the speed of the motor, so that this variable speed motor can appropriately change the rotational speed of the motor. Background technique [0002] figure 1 An exploded perspective view of the rotor and stator contained in a conventional external rotary motor. figure 2 For the motor winding arrangement, it shows a conventional 6-pole winding arrangement. [0003] Typically, a motor includes a stator mounted with windings, and a rotor formed of an Al (aluminum) conductor or an iron core. The motor produces periodic current changes in the windings mounted to the stator, a constant c...

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): H02K17/06H02K17/08H02P1/48H02P7/48
CPCH02K17/08H02P1/44H02P25/04H02P25/188
Inventor 金东源闵丙旭崔炳杰李泰喜
Owner LG ELECTRONICS INC
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