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Photovoltaic direct-drive variable frequency air conditioner cooling equipment control system and method and application

A technology for cooling equipment and inverter air conditioners, applied in the field of cooling equipment control, can solve the problems of refrigerant overcooling, overheating, poor reliability of cooling equipment, etc., and achieve the effects of improving reliability, ensuring safe and stable operation, and improving evaporation speed.

Active Publication Date: 2020-04-10
GREE ELECTRIC APPLIANCES INC
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] (1) Existing photovoltaic direct-drive inverter air-conditioning systems are prone to overcooling and overheating due to the control of refrigerant circulation
[0006] (2) The existing photovoltaic direct drive inverter air conditioning system has poor reliability of cooling equipment

Method used

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  • Photovoltaic direct-drive variable frequency air conditioner cooling equipment control system and method and application
  • Photovoltaic direct-drive variable frequency air conditioner cooling equipment control system and method and application
  • Photovoltaic direct-drive variable frequency air conditioner cooling equipment control system and method and application

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Embodiment Construction

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. 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.

[0032] In view of the problems in the prior art, the present invention provides a photovoltaic direct drive inverter air conditioner cooling equipment control system and method. The present invention will be described in detail below with reference to the accompanying drawings.

[0033] Such as figure 1 As shown, the photovoltaic direct drive inverter air conditioner cooling equipment control system provided by the embodiment of the present invention includes:

[0034] The solar energy conversion module 1 is used to collect solar energy and convert solar energy into electrical energy.

[0035] The electric energy collection ...

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Abstract

The invention belongs to the technical field of cooling equipment control, and discloses a photovoltaic direct-drive variable frequency air conditioner cooling equipment control system, method and application. Solar energy is converted into electric energy, energy of a plurality of photovoltaic panels is gathered together, and the converted electric energy drives an air conditioner main unit air conditioner compressor to refrigerate; in the conversion process, a frequency converter can generate heat, and heat dissipation and cooling are conducted through the photovoltaic cooling equipment; thechange of the voltage of a photovoltaic direct-current bus is detected, the unit operation mode is pre-judged to be divided into a night operation mode and a daytime operation mode, and after the unit operation mode is confirmed to be completed, the unit operation state is recognized, so that the compressor operation frequency of the cooling equipment is controlled by sections to quickly respondto adjust the junction temperature of the frequency converter module and control the refrigerant circulation amount. According to the change of the output power of the frequency converter, the junction temperature of the frequency converter module is adjusted in real time, the refrigerant circulation amount is accurately controlled, supercooling and overheating adjustment is avoided, safe and stable operation of the photovoltaic direct-drive frequency converter is guaranteed, and meanwhile the reliability of cooling equipment is improved.

Description

Technical field [0001] The invention belongs to the technical field of cooling equipment control, and in particular relates to a photovoltaic direct-drive variable frequency air conditioner cooling equipment control system, method and application. Background technique [0002] At present, the closest existing technology: In recent years, with the rapid development of China’s economy and the improvement of energy saving and emission reduction requirements, the advantages of photovoltaic direct drive inverter air conditioning systems in environmental protection and energy saving are obvious; The direct current is directly merged into the DC bus of the inverter unit of the unit, so as to achieve the effect of photovoltaic energy conversion and direct drive. During the conversion process, the inverter module (including the rectifier module and the inverter module) generates a large amount of heat; the current conventional photovoltaic Inverter module cooling and heat dissipation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/32F24F11/64F24F11/65F24F11/84F24F11/86F24F11/88H02J7/35
CPCF24F11/32F24F11/64F24F11/65F24F11/84F24F11/86F24F11/88H02J7/35Y02E10/56
Inventor 周卫华罗建飞寇芷薇王源杰姚宏锋
Owner GREE ELECTRIC APPLIANCES INC
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