Power supply system for photovoltaic and power grid interactive direct current air conditioner

Abstract

The invention relates to a power supply system for a photovoltaic and power grid interactive direct current air conditioner. The system is characterized by comprising a photovoltaic battery panel, a twin-channel independent MPPT photovoltaic tracking module and a direct current frequency conversion module, wherein the photovoltaic battery panel is used for converting solar energy into direct current electricity and provides the direct current electricity to the twin-channel independent MPPT photovoltaic tracking module; the twin-channel independent MPPT photovoltaic tracking module is used for boosting the direct current electric output by the photovoltaic battery panel and providing to a direct current air conditioning frequency conversion panel; and the direct current frequency conversion module is used for converting the voltage of the power grid into the direct current electricity and providing the direct current electricity to the direct current air conditioning frequency conversion panel. The system provided by the invention has the advantages that by changing the power supply mode of the direct current air conditioner in the prior art, the power supply function of a photovoltaic preferred power grid complementation is realized without a storage battery and a selector switch; the photovoltaic electric energy and the power grid work in parallel, so that the direct current air conditioner is continuously powered.

Description

technical field [0001] The invention relates to the field of home appliances, in particular to a DC air-conditioning power supply system in which photovoltaics and power grids interact. Background technique [0002] Domestic photovoltaic applications basically use inverters to supply power to air conditioners. Ordinary inverters require the cooperation of battery energy storage and photovoltaic controllers to supply power to air conditioners. The hardware structure of the system is complex, and the hardware investment is said to be too high. The work efficiency of the whole machine is very low, and the system failure rate is high. The biggest disadvantage of this topological photovoltaic application system is that battery loss and depreciation are unacceptable. Generally, the battery needs to be replaced in one or two years, so this topology photovoltaic application system is not suitable for air conditioning power supply. Contents of the invention [0003] Aiming at the ...

AI Technical Summary

Problems solved by technology

[0002] Domestic photovoltaic applications basically use inverters to supply power to air conditioners. Ordinary inverters require the cooperation of battery energy storage and photovoltaic controllers to supply power to air conditioners. The hardware structure of the system is complex, and the investment in hardware is said to be too high. The work efficiency of the whole machine is very low, and the system failure rate is high

The biggest disadvantage of this topological photovoltaic application system is that the battery loss and depreciation are unacceptable. Generally, the battery needs to be replaced in one or two years, so this topology photovoltaic application system is not suitable for air conditioning power supply.

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