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

A driving control circuit and driving voltage technology, applied in the fields of driving control circuits, circuit boards, air conditioners, and driving control methods, can solve problems such as affecting the temperature stability of air conditioning, refrigeration, heating, etc., to ensure smooth switching, avoid setbacks or control moving effect

Active Publication Date: 2020-07-31
GUANGZHOU HUALING REFRIGERATION EQUIP
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  • 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 embodiments of the present invention in detail, and the preferred embodiments of the present invention are shown in the accompanying drawings. Each technical feature and overall technical solution of the invention should not be construed as limiting the protection scope of the invention.

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

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

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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 comprises a switch assembly, a first inversion module and a switching transition assembly. When a three-phase winding is switched between a star connection state and a triangular connection state, the states of a first switch group and a second switch group need to be switched respectively; a switching transition assembly is arranged; before the first switch group and the second switch group are switched, a second drive voltage for keeping the three-phase winding running is provided for the three-phase winding; after the first switch group and the second switch group are switched, the working state of the three-phase winding is not changed; the motor can still maintain stable operation, and smooth switching is ensured; the three-phase winding is prevented from being impacted by voltage to generate pause or brake when the motor is switched; and the connection state of the motor is switched without shutdown.

Description

technical field [0001] The invention relates to the technical field of motor drive, and in particular, to a drive control circuit, a drive control method, a circuit board and an air conditioner. Background technique [0002] The drive motor of the high-efficiency inverter compressor of the inverter air conditioner is generally a permanent magnet synchronous motor, and the motor windings usually use a star connection. 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 EMF coefficient will cause the compressor to have voltage saturation at a lower frequency during high-frequency operation, 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 whole frequency band. In order to solve...

Claims

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Application Information

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Patent Type & Authority Applications(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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