Intelligent power supply system for photovoltaic air conditioner and power supply method

Abstract

The invention discloses an intelligent power supply system for a photovoltaic air conditioner and a power supply method. The system comprises a control module, a two-way AC / DC converter module, an inversion module and a photovoltaic system, wherein the two-way AC / DC converter module, the inversion module and the photovoltaic system are connected with the control module respectively; the photovoltaic system is used for converting solar energy into direct current; the two-way AC / DC converter module and the inversion module are connected with the photovoltaic system respectively; and according to the working conditions of the photovoltaic system and an air conditioning unit, the control module enables power supply to the air condition through the inversion module after establishing the connection of the photovoltaic system or enables excessive electric energy feedback through the two-way AC / DC converter module, or enables power supply to the air condition through the two-way AC / DC converter module and the inversion module after establishing the connection of the power grid. The method is a power supply method utilizing the above power supply system when the photovoltaic system and the air conditioning unit are in different working conditions. The intelligent supply system has the advantages of being simple and compact in structure, low in cost, high in power supply efficiency and high in stability; and an intelligent power supply control function of the photovoltaic air conditioner can be achieved on the basis of one set of system.

Description

technical field [0001] The invention relates to the technical field of photovoltaic air conditioners, in particular to an intelligent power supply system and power supply method for photovoltaic air conditioners. Background technique [0002] Nowadays, coal, petroleum and other fossil energy sources are frequently running out, and the problem of environmental pollution is becoming more and more serious. With the continuous development and progress of photovoltaic power generation technology, photovoltaic power generation may be one of the most promising power generation technologies. In a small photovoltaic system, the central air-conditioning inverter is the largest electrical equipment, that is, the power supply system is composed of photovoltaic power generation equipment and central air-conditioning inverter. The combination of photovoltaic power generation and central air-conditioning can realize building energy saving from two aspects of increasing revenue and reducing...

AI Technical Summary

Problems solved by technology

The above-mentioned photovoltaic inverter control system and air conditioner inverter control system work completely independently, that is, the power generation equipment and electrical equipment work completely isolated, so the cost is high, and they cannot be combined to adjust the control mode to achieve optimal mode control

Furthermore, since the photovoltaic power generation control system and the air conditioner inverter control system each achieve the required control functions, the man-machine interface, fault records, and energy measurement corresponding to the two are also independent, which is not easy to integrate to form a set of control system; if an additional host computer is introduced to form a control system, not only will the cost be higher, but also the specifications and agreements between the photovoltaic power generation control system, the air conditioner inverter control system and the host computer are often not well compatible

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