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

Rheostat, motor and control method for motor

A technology of rheostats and control parts, which is applied in the direction of sliding contact resistors, electromechanical devices, electrical components, etc., can solve the problems of limited use, high manufacturing and maintenance costs, complex structures, etc., and achieve the effect of accurate and rapid resistance adjustment

Active Publication Date: 2017-03-22
GREE ELECTRIC APPLIANCES INC
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve step-by-step starting, a collector ring is provided on the motor, and the collector ring is connected to the resistor through a brush, which makes the motor overall large in size, complex in structure, difficult to process, and high in manufacturing and maintenance costs, resulting in limited use

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
  • Rheostat, motor and control method for motor
  • Rheostat, motor and control method for motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention is described below based on examples, but the present invention is not limited to these examples.

[0025] like figure 1 As shown, the motor 1 in the present application includes a rotor 11 and a stator 12 , the rotor 11 is arranged radially inside the stator 12 and can rotate relative to the stator 12 . According to the principle of the motor, when the motor rotor is connected in series with a resistor of an appropriate size, the starting torque of the motor can be equal to the maximum torque, and then as the speed increases, the resistance value of the required series resistor will gradually decrease until it reaches Cut off the series resistance after the rated speed.

[0026] In the present application, a rheostat 13 is provided on the rotor 11, and the rheostat 13 can rotate together with the rotor 11, and the rheostat 13 is connected in series with the winding of the rotor 11. During the starting phase of the motor 1, the rheostat 13 The re...

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 rheostat, a motor equipped with the rheostat and a control method for the motor. The rheostat comprises an annular resistor main body, wherein multiple wiring parts are arranged on the resistor main body; at least one of the multiple wiring parts can slide on the resistor main body; and the rheostat and a variable resistance part are formed between the slidable wiring parts and fixed wiring parts. By virtue of the structural setting of the rheostat, the rheostat can be arranged on a motor rotor conveniently, so that the problem of high starting current while not high starting torque of an asynchronous motor in starting can be solved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a rheostat arranged on the motor, a motor provided with the rheostat and a control method of the motor. Background technique [0002] When the asynchronous motor is started, the starting torque is not large, but the starting current is very large (generally 4-7 times the rated current); therefore, except for small-power motors, high-power motors generally need to be equipped with a starting device, which is not only expensive , and will lead to a further reduction in the starting torque, which cannot meet the requirements for higher starting torque occasions. [0003] In addition, in order to keep the starting torque as large as possible during the whole starting process, traditional wound asynchronous motors sometimes use the method of cutting off the starting resistance of the rotor winding step by step to achieve step-by-step starting. In order to achieve step-by-step starting...

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): H01C10/32H02K11/20H02K11/21
CPCH01C10/32
Inventor 谭新亮樊钊赖元华郑军黄雯慧邝振威戴瀹王承刚
Owner GREE ELECTRIC APPLIANCES 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