Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for controlling bus voltage of variable-frequency air conditioner controller and air conditioner

A technology of bus voltage control and bus voltage, which is applied in heating and ventilation control systems, output power conversion devices, heating methods, etc., can solve problems such as excessive current and large pressure difference in PFC circuit boosting, and avoid boosting Excessively high, avoid loss, ensure the effect of normal and reliable operation

Active Publication Date: 2020-09-25
NINGBO AUX ELECTRIC +1
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the present invention is that the existing PFC circuit boosts the voltage by controlling and outputting a fixed voltage. When the input AC voltage is low, the boost voltage difference of the PFC circuit is too large, and the current may be too large.

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
  • Method and device for controlling bus voltage of variable-frequency air conditioner controller and air conditioner
  • Method and device for controlling bus voltage of variable-frequency air conditioner controller and air conditioner
  • Method and device for controlling bus voltage of variable-frequency air conditioner controller and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] In order to facilitate the understanding of the various embodiments of the present invention, the following are given as figure 1 The schematic diagram of the circuit topology of the inverter air conditioner controller is shown. Such as figure 1 , including AC power supply (AC power supply), rectifier module (that is, a single-phase full-wave rectifier bridge composed of four diodes), inductor L1, diode D1, PFC circuit, capacitor C, PWM control module and load compressor, the controller can Realize AC-DC conversion, that is, alternating current to direct current, and then drive the compressor motor to run. The average value of the output voltage of the controller circuit is always greater than or equal to the input voltage, and th...

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 method and device for controlling bus voltage of a variable-frequency air conditioner controller and an air conditioner. The method comprises the following steps: acquiring the current required bus voltage and the current actual bus voltage; obtaining a voltage modulation rate based on the current required bus voltage and the current actual bus voltage; and determining a target bus voltage according to the voltage modulation rate, and controlling the actual bus voltage to approach to the target bus voltage by a PFC circuit. The method and device for controlling the busvoltage of the variable-frequency air conditioner controller and the air conditioner can automatically adapt to bus voltage control under different voltages, and the problem of excessive IGBT currentcaused by overhigh boosting is avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for controlling the bus voltage of an inverter air conditioner controller, and an air conditioner. Background technique [0002] At present, the electric energy required by the air conditioner motor is in the form of direct current, so it is necessary to convert the input alternating current into direct current, and after the alternating current is rectified, the power factor is low. In order to improve the power factor of the power supply, power factor correction (Power Factor Correction) is usually used , PFC) circuit. [0003] During the actual operation of the inverter air conditioner, the frequency range is wide. When operating at high frequency, due to the existence of the power generation voltage and the voltage drop of the device, there will be insufficient bus voltage. The PFC circuit can control the bus boost. However, the existing The boos...

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): F24F11/30F24F11/64F24F11/70F24F11/88H02M1/42H02M5/458
CPCF24F11/30F24F11/64F24F11/70F24F11/88H02M1/4225H02M5/458Y02B70/10
Inventor 黄宁李家质张杰
Owner NINGBO AUX ELECTRIC