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

A full-frequency-domain constant-torque control system and method for an air-conditioning inverter compressor

A variable frequency compressor and control system technology, applied in pump control, liquid variable capacity machinery, mechanical equipment, etc., can solve problems such as large difference in current peak and peak fluctuation, shutdown, etc., to achieve stable current, improve reliability, The effect of reducing power consumption

Active Publication Date: 2016-08-31
HAIER GRP CORP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a full-frequency domain constant torque control method for an air-conditioning variable-frequency compressor, which solves the problem that the peak and peak fluctuations of the current in each cycle vary greatly during the high-frequency operation of the existing air-conditioning compressor. Under the current situation, the technical problem that causes the compressor current to reach the compressor demagnetization or the current protection value of the power module to stop

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
  • A full-frequency-domain constant-torque control system and method for an air-conditioning inverter compressor
  • A full-frequency-domain constant-torque control system and method for an air-conditioning inverter compressor
  • A full-frequency-domain constant-torque control system and method for an air-conditioning inverter compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Such as image 3 As shown: the full frequency domain constant torque control system of the air conditioner inverter compressor of this embodiment includes: a current vector control unit and a constant torque control unit.

[0028] The constant torque control unit includes a pulsating current calculation unit and a current compensation command generating unit. The pulsating current calculation unit calculates the pulsating current based on the motor current, and passes the difference between 0 and the pulsating current through the current compensation command generating unit to form a current command for reducing current ripple.

[0029] Among them, the motor current is obtained by sampling the compressor bus current by the current sampling part through the sampling circuit and calculating it according to the bus current and the motor paramete...

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 an air conditioner inverter compressor frequency-domain constant torque control system and method. The air conditioner inverter compressor frequency-domain constant torque control system comprises a current vector control portion and a constant torque control portion; the constant torque control portion outputs a current command which is used for reducing current pulse and adds the current command which is used for reducing the current pulse and an input signal of the current vector control portion to serve as input of the current vector control portion; the current vector control portion outputs a voltage control command to control a compressor. The improved constant torque compensation control method can be applied to a full frequency domain of a compressor; the constant torque control portion compensates currents to an input end of the current vector control portion; during a high band operation process, the currents are stable, a wave crest value at every period is uniformly distributed, the compressor stably operates.

Description

Technical field [0001] The invention belongs to the technical field of air conditioner compressor variable frequency drive control, and specifically relates to a constant torque control method of an air conditioner variable frequency compressor in the full frequency domain. Background technique [0002] Air conditioners have become a global product. However, air conditioners account for 23% of the energy consumption of household appliances. Energy-saving technology has always been a key research topic for air-conditioning companies. [0003] The current high efficiency methods of DC inverter compressors include: [0004] 1) Use high-performance magnets to increase magnetic flux; [0005] 2) Improve the coil winding method, increase the slit occupation rate, use thick copper wire, and increase the number of winding turns; [0006] 3) Reduce inductance and improve the utilization of motor voltage; [0007] The above methods of improving the efficiency of inverter compressors increase the ...

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): F04B49/06
Inventor 王友宁程永甫刘聚科许国景
Owner HAIER GRP CORP
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