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Drive control circuit, drive control method, circuit board and air conditioner

A technology for driving control circuits and driving voltages, which is applied in the field of driving control circuits, circuit boards, air conditioners, and driving control methods, and can solve problems affecting the temperature stability of air-conditioning, cooling and heating, so as to ensure switching, avoid setbacks or braking Effect

Active Publication Date: 2022-03-01
GUANGZHOU HUALING REFRIGERATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will cause the compressor to shut down more times when the frequency is adjusted to high and low frequencies, which will affect the temperature stability of the air conditioner for cooling and heating

Method used

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  • Drive control circuit, drive control method, circuit board and air conditioner
  • Drive control circuit, drive control method, circuit board and air conditioner
  • Drive control circuit, drive control method, circuit board and air conditioner

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Embodiment Construction

[0063] This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

[0064] In the description of the present invention, if the first and the second are described only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating The sequence of the indicated technical features.

[0065] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above w...

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Abstract

The invention discloses a drive control circuit, a drive control method, a circuit board and an air conditioner. The drive control circuit includes a switch assembly, a first inverter module and a switching transition assembly, and the three-phase winding is between a star connection state and a delta connection state. The inter-switching needs to switch the states of the first switch group and the second switch group respectively. By setting the switching transition component, the three-phase winding is provided with the second drive to keep the three-phase winding running before the switching of the first switch group and the second switch group. Voltage, so that after the first switch group and the second switch group are switched, the working state of the three-phase winding will not change, and the motor can still maintain stable operation to ensure smooth switching and avoid the three-phase winding being subjected to voltage shocks during switching. Frustration or braking to realize switching the connection state of the motor without stopping the machine.

Description

technical field [0001] The invention relates to the technical field of motor drive, in particular to a drive control circuit, a drive control method, a circuit board and an air conditioner. Background technique [0002] The driving motor of the high-efficiency variable frequency compressor of the inverter air conditioner is generally a permanent magnet synchronous motor, and the motor winding is usually connected in a star shape. In order to improve the efficiency of the motor, it is necessary to increase the back EMF coefficient of the motor as much as possible. However, limited by the DC bus voltage, increasing the back electromotive force coefficient will cause the compressor to appear voltage saturation at a lower frequency when it is running at high frequency, thus entering the field weakening control in advance, resulting in a decrease in efficiency at high frequency, and even affecting the operation Stability is not conducive to the efficiency improvement of the whol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P25/18H02P27/06
CPCH02P25/184H02P27/06
Inventor 胡斌黄招彬赵鸣龙谭曾贤杰张杰楠文先仕徐锦清
Owner GUANGZHOU HUALING REFRIGERATION EQUIP
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