Control method and device of switch tube and air conditioner

A control method and control device technology, applied in the direction of output power conversion device, high-efficiency power electronic conversion, electrical components, etc., can solve the problems of unobtainable and difficult to achieve global universal use

Active Publication Date: 2017-08-01
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the active PFC circuit, fixed carrier frequency and voltage control parameters are generally used, but because different countries and regions use different standard grid parameters, a single carrier frequency and voltage control parameters cannot be well adapted to different grids characteristics, so the best EMI (Electro Magnetic Interference, electromagnetic interference) and EMC (Electro Magnetic Compatibility, electromagnetic compatibility) effects cannot be obtained, and it is difficult to achieve global universal 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
  • Control method and device of switch tube and air conditioner
  • Control method and device of switch tube and air conditioner
  • Control method and device of switch tube and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0062] The invention provides a control method of a switch tube, which is applied to a PFC circuit.

[0063] The power factor of a traditional single-phase power system can be defined as the ratio of the average power (active power) actually consumed by the load to the measured apparent power, where the active power is the difference between the instantaneous voltage and the instantaneous power in one line voltage cycle. The average value of the product of the current over the time integral, such as figure 1 As shown, in this circuit, the capacitor EC is usually a large capacitor, and a stable DC voltage is connected across the load by utilizing the characteristics of slow discharge of the large capacitor. If the power switch Q does not operate, the input current can flow only when the input voltage is greater ...

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 discloses a control method and device of a switch tube and an air conditioner. When the control method is used, a frequency of an input power supply of a power factor correction (PFC) circuit is periodically acquired, a switch frequency of a power switch tube is set, an output duty ratio of the power switch tube is calculated according to an AC voltage value an AC current value, which are acquired, of the input power supply of the PFC circuit and an acquired DC bus voltage value, and the power switch tube is driven to be periodically switched off or switched on according to the switch frequency and the output duty ratio. By the control method, the switch-on and the switch-off of the power switch tube can be controlled according to different frequencies of the input power supply, the power factor of the PFC circuit is increased, so that the optimal electro magnetic interference (EMI) effect is achieved.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a control method and device of a switch tube and an air conditioner. Background technique [0002] At present, in inverter air conditioner products, in order to reduce the current carrier and improve the power factor, an active PFC (Power Factor Correction, power factor correction) circuit is usually used. In the active PFC circuit, fixed carrier frequency and voltage control parameters are generally used. However, since different countries and regions use different grid parameters, a single carrier frequency and voltage control parameters cannot be well adapted to different grids. Therefore, the best EMI (Electro Magnetic Interference, electromagnetic interference) and EMC (Electro Magnetic Compatibility, electromagnetic compatibility) effects cannot be obtained, and it is difficult to achieve global use. SUMMARY OF THE INVENTION [0003] The main purpose of 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
IPC IPC(8): H02M1/44H02M1/42
CPCH02M1/4258H02M1/44Y02B70/10
Inventor 梁国强
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap