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Protection system and method of three-phase electric air condition controller

A technology of air conditioner controller and protection system, which is applied in the direction of protection against overvoltage, emergency protection device with automatic disconnection, emergency protection circuit device, etc., can solve problems such as controller damage, and achieve the effect of preventing damage.

Pending Publication Date: 2018-06-05
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose a protection system and method for a three-phase electric air-conditioning controller. The system and the corresponding method solve the problem of damage to the controller due to overvoltage through corresponding detection circuits and protection circuits.

Method used

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  • Protection system and method of three-phase electric air condition controller
  • Protection system and method of three-phase electric air condition controller
  • Protection system and method of three-phase electric air condition controller

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Embodiment Construction

[0036] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0038] like figure 2 As shown, the protection system of the three-phase electric air conditioner controller of the present invention includes a main control module, an AC load module connected to the main control module, a DC load module, a three-phase four-wire circuit module, a wiring detection circuit module, and a protection circuit module , a voltage detection circuit module, and a high withstand voltage transformer module; the phase lines L1, L2, L3 and the neutral line N of the three-phase four-wire circuit module are connected to the connection detection circuit module through a terminal board, wherein the phase lines L1, L2, L3 supplies power to the compressor through an AC co...

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Abstract

The invention provides a protection system and method of a three-phase electric air condition controller. The system comprises a main control module, a load module connected with the main control module, and a power line for supplying power to the main control module and the load module, wherein the power line consists of one phase wire and a null wire in a three-phase four-wire circuit module; the protection system further comprises a wire connection detection circuit module which is located between the main control module and the three-phase four-wire circuit module to form a connection circuit, so as to detect a zero-crossing signal, and a protection circuit module; the input end of the protection circuit module is connected with the power line; the output end of the protection circuitmodule is connected with the load module; the control end of the protection circuit module is connected with the main control module. The protection system and the corresponding method which are provided by the invention can effectively prevent the controller from being damaged by overvoltage.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a protection system and method for a three-phase electric air conditioner controller. Background technique [0002] At present, most of the known three-phase electric air-conditioning controller systems adopt figure 1 The connection structure adopts the three-phase four-wire method for wiring. The phase lines L1, L2, and L3 supply power to the three-phase electric compressor. In addition, a phase line such as the phase line L3 is extracted from the phase line, and the combination of the neutral line N is used as the power line. to provide power. [0003] The controller controls AC loads such as compressors, AC contactors, AC fans, four-way valves, etc. through relays, and converts the single-phase AC power input to the controller into DC power through a rectifier bridge for the operation of the DC fan. [0004] However, the existing three-phase electric air-conditioning controll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/165H02H1/00H02H3/20H02H3/50
CPCH02H1/0007H02H1/0061H02H3/20H02H3/50G01R19/16533
Inventor 严腾
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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