Non-storage-battery portable photovoltaic direct-driven refrigerator system with compressor rotation speed varying with irradiation

Abstract

The invention belongs to the technical field of solar energy utilization, and particularly relates to a non-storage-battery portable photovoltaic direct-driven refrigerator system with the compressor rotation speed varying with irradiation. The non-storage-battery portable photovoltaic direct-driven refrigerator system comprises a photovoltaic cell panel, a solar irradiation sensor, a DC voltage transmitter and a DC variable-frequency refrigerator, wherein the photovoltaic cell panel is connected with a compressor controller; the solar irradiation sensor and the DC voltage transmitter are combined into a compressor speed adjusting signal generation module; after being connected with a temperature controller in series, the compressor speed adjusting signal generation module is connected with the compressor controller; and the output interface of the compressor controller is connected with a DC variable-frequency compressor. Compared with the prior art, the non-storage-battery portable photovoltaic direct-driven refrigerator system provided by the invention has the following advantages: the problem that a compressor frequently starts and stops when the solar irradiation strength varies relatively greatly can be solved; the compressor rotation speed can be adjusted according to the irradiation signal strength; the law of energy supply and demand in an independent photovoltaic system can be met; the energy utilization ratio and the refrigeration efficiency are higher; and the demand for rapid refrigeration by using a photovoltaic refrigerator in the open air can be met.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, and in particular relates to a battery-free portable photovoltaic direct-drive refrigerator system in which the rotational speed of a compressor changes with irradiation. Background technique [0002] With the continuous improvement of people's living standards, people have more and more opportunities for outdoor travel, and there is usually a demand for refrigeration during outdoor travel; vaccines and other medicines carried by medical personnel in remote areas also have refrigeration needs; The life of the military and soldiers in mobile operations also requires refrigeration technology. The ever-expanding demand for cooling in these application scenarios has promoted the continuous development of mobile refrigeration technology. [0003] Photovoltaic portable refrigerators belong to the application of mobile refrigeration technology, which uses solar energy as energy, which ...

AI Technical Summary

Problems solved by technology

[0005] 1. The battery is often the heaviest of the system components, which will greatly reduce the portability and mobility of the system;

[0006] 2. The use of batteries will greatly increase the initial investment cost of the system. Compared with other components of the system, the life of batteries is much shorter, generally only two to three years, and later maintenance and replacement will also increase costs;

[0007] 3. Energy storage and energy release and utilization of batteries - the two energy conversion processes greatly reduce the overall efficiency of the system;

[0008] 4. The production and use of batteries and the final recycling process may cause serious waste pollution to the environment

However, due to the disadvantage of unstable solar radiation, the direct-drive refrigerator may have the problem of frequent start-up and stop of the compressor when the solar radiation intensity changes greatly; when the solar radiation intensity changes, the power generation power also changes accordingly. Effective use of the generated electricity is also a problem that needs to be solved

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