Automatic photovoltaic charging post control system

Abstract

The invention discloses an automatic photovoltaic charging post control system. The system consists of a solar cell panel, a Boost type direct current (DC)/DC circuit, a Buck type alternating current (AC)/DC circuit, a digital signal processor (DSP) control system, an intelligent control switch, a change-over switch and a detection circuit. The direct current transmitted by a photovoltaic cell array is subjected to maximum power point tracking through the Boost circuit; and meanwhile, the charging current of the storage battery is intelligently adjusted by adjusting the operating current of the DC/DC circuit, and according to the system, the AC and DC charging of an electric automobile can be realized through on-off control. When a photovoltaic power generation system does not work or the charging current is insufficient, the AC can be automatically switched to charge the storage battery through the intelligent switch, and the good operating state of the storage battery is guaranteed at any time. When the photovoltaic charging post is in grid-connected use on the household photovoltaic roof, the off-peak adjusting function of the power grid can be realized through the storage battery of the electric automobile; and when the photovoltaic charging post is in off-grid independent use, the capacity of the storage battery is configured according to actual conditions.

Description

technical field [0001] The invention is a novel photovoltaic charging pile automatic control system, which is mainly applied to various electric vehicle charging piles. The invention belongs to the technical field of new energy and automatic control. Background technique [0002] Electric vehicles use electric energy instead of petroleum as the power source, and truly achieve zero exhaust emissions. They are clean, environmentally friendly, and energy-saving. They are the hot spots and trends in the development of the world's automobile industry. [0003] Electric vehicle charging piles provide energy supply for electric vehicle batteries, which is a key link in the development of electric vehicles. The charging piles currently used in my country are divided into two types: AC charging piles and DC charging piles. The AC charging pile is a charging pile that uses the AC charging mode to charge the battery of the electric vehicle with its own charging control device. The cha...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new photovoltaic charging pile automatic control system that combines solar photovoltaic power generation and charging piles to solve the problem that the existing electric vehicle charging piles can only be charged by AC power grids, which cannot fundamentally solve energy regeneration and environmental pollution. At the same time, photovoltaic charging piles can be installed off-grid in various parking bays or highways without service areas to provide emergency energy for electric vehicles

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