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

Motor control system and frequency conversion air conditioner

A motor control and inverter technology, applied in control systems, motor control, vector control systems, etc., can solve the problem of inability to sample the phase current of multiple permanent magnet synchronous motors

Pending Publication Date: 2018-02-09
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a motor control system and an inverter air conditioner. Current sampling problem

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 control system and frequency conversion air conditioner
  • Motor control system and frequency conversion air conditioner
  • Motor control system and frequency conversion air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0045] refer to figure 1 , figure 1 The circuit structure schematic diagram of the motor control system provided for the first embodiment of the present invention, for the convenience of description, only shows the parts related to the embodiment of the present invention, and the details are as follows:

[0046] The motor control system includes a rectifier 2, a filter circuit 6, an operation control unit 5, a voltage sampling unit 10, several inverters, and a current sampling unit and a motor correspondingly connected to the se...

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 provides a motor control system and a frequency conversion air conditioner. The motor control system comprises a rectifier, a filter circuit, an operational control part, a plurality ofinverters and a plurality of current sampling parts and motors which are connected with the inverters correspondingly; the operational control part comprises an AD sampling unit, time-sharing samplingis carried out on the phase current signal of each motor through the AD sampling unit, and the phase current signal of each motor is staggered from the ascending semi-cycle or descending semi-cycle of each triangular wave corresponding to sampling on the phase current of each motor in time, so that the conflict on the linear currents of the motors during sampling through the AD sampling unit of the operational control part is avoided, the time-sharing sampling on the phase currents of the motors based on the AD sampling unit is successfully realized, and the control of low-cost MCU based on the AD sampling unit on the motors is realized.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a motor control system and an inverter air conditioner. Background technique [0002] In order to meet the energy-saving requirements of electromechanical products, permanent magnet synchronous motors with higher efficiency have been more and more widely used. In household appliances, such as air conditioners and refrigerators, compressors or DC motors driven by frequency conversion are generally used. Using sensorless permanent magnet synchronous motors, in practical applications, two or more permanent magnet synchronous motors are used in one household appliance, such as inverter air conditioners usually have a compressor based on permanent magnet synchronous motors And more than one fan of permanent magnet synchronous motor, when MCU (Microcontroller Unit) controls the operation of the above permanent magnet synchronous motor, each permanent magnet synchronous motor needs an indep...

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 Applications(China)
IPC IPC(8): H02P5/74H02P21/14H02P21/22H02P27/08H02P25/16
CPCH02P5/74H02P21/18H02P21/22H02P27/08H02P2205/01H02P2201/15F24F11/86
Inventor 霍军亚黄招彬
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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