Household off-grid photovoltaic power generation system

Abstract

The invention discloses a household off-grid photovoltaic power generation system which includes a photovoltaic assembly, a solar controller, a storage battery and an AC control module. The photovoltaic assembly, the solar controller, the storage battery and the AC control module are sequentially connected. The solar controller is connected with a DC load. The AC control module is connected with the AC load and a mains supply. The photovoltaic assembly receives optical radiation energy in sunlight and converts the energy into electrical energy which is then stored into the storage battery through the solar controller. The solar controller obtains the electrical energy on the storage battery so as to supply power directly to a DC load. The AC control module converts DC of the storage battery into 220V AC to supply power to the AC load on one hand, and on the other hand, controls switching between power supplying of the mains supply and power supplying of the storage battery so that a photovoltaic power generation technology can be applied to most households in our country and a back-up power supply can be provided after power-off.

Description

technical field [0001] The invention relates to the field of solar energy utilization, in particular to a household off-grid photovoltaic power generation system. Background technique [0002] At present, photovoltaic power generation technology has gradually become one of the mainstream power generation technologies, including two categories: grid-connected applications and off-grid applications. [0003] Grid-connected applications, such as the miniaturization of large-scale grid-connected photovoltaic power plants, are one of the development directions, mainly applicable to single-family villa-type families, and the technology development has been very mature and effective. However, for residential community-type households, due to the limited area that each household can install photovoltaic modules, it is not economically beneficial to directly miniaturize large-scale grid-connected photovoltaic power station technology and transplant it. Although the grid-connected mi...

AI Technical Summary

Problems solved by technology

Due to the limitation of the floor design of the community, even if all the places outside the house that can receive sunlight are covered with photovoltaic modules, the existing photovoltaic modules and their installation cannot fully meet the normal daily electricity demand of the family

At present, there is a lack of a household photovoltaic power generation system that can meet the needs of most families in my country (especially residential quarters) and can generate electricity normally even after a power outage.

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