Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Motor heating method, device and frequency converter

A heating method and inverter technology, applied in motor control, AC motor control, electrical components, etc., can solve the problems of low heating power and slow heating speed.

Active Publication Date: 2020-10-20
SHENZHEN INVT ELECTRIC
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the copper loss and iron loss of the stator winding of the motor only account for a small part of the motor power, the heating power is very small and the heating speed is very slow

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
  • Motor heating method, device and frequency converter
  • Motor heating method, device and frequency converter
  • Motor heating method, device and frequency converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0036] It is to be understood that, when used in this specification and the appended claims, the terms "comprising" and "comprising" indicate the presence of the described features, integers, steps, operations, elements and / or components, but do not exclude one or The presence or addition of a number of other features, integers, steps, operations, elements, components, and / or sets thereof.

[0037] see figure 1 and figure 2 , figur...

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

An embodiment of the present application discloses a heating method, a device and a frequency converter of an electric motor. The method comprises the following steps of: acquiring a high-frequency alternating current output from an inverter to a motor; Based on the preset calculation formula, the actual heating power and the corresponding actual current amplitude are calculated according to the high frequency alternating current. Obtaining a given heating power and performing an adjustment limiting process on the given heating power and the actual heating power to obtain an injection currentfrequency; Integrating the injected current frequency to obtain a voltage vector angle; Obtaining a given current magnitude and performing an adjustment limiting process on the given current magnitudeand the actual current magnitude to obtain an adjustment voltage magnitude; Inputting a voltage vector angle and a regulated voltage amplitude to a preset pulse width modulator to generate a pulse width modulated signal; The inverter is controlled to output high frequency AC current to the motor according to the pulse width modulation signal to heat the motor. The method in this embodiment can improve the heating speed of the motor and realize the adjustable heating power.

Description

technical field [0001] The present application relates to the technical field of motor control, and in particular, to a heating method, device and frequency converter for a motor. Background technique [0002] When the ambient temperature of the air-conditioning system in automobiles and other equipment is minus 30 to 40 °C, the compressor lubricant will solidify and the cooling medium will become liquid. If the air-conditioning system is suddenly started at this time, the motor will be heavily loaded, and the motor will not be able to Launched smoothly. In order to enable the motor to start smoothly, it is generally necessary to heat the motor first to vaporize the cooling medium, thaw the compressor lubricating oil, and then start the air conditioning system. [0003] At present, the method of heating a motor is mainly to inject a DC current into the motor, and use the copper loss and iron loss of the stator winding of the motor to heat the motor. However, since the copp...

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): H02P29/62H02P27/048
CPCH02P27/048H02P29/62
Inventor 沈文刘军锋郑丽丽
Owner SHENZHEN INVT ELECTRIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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