Solar energy high voltage sodium lamp controller based on single stage inverter

Abstract

This invention relates to a solar energy high pressure Na-lamp controller based on a single stage inverter characterizing in applying a sectional charge control and a frequency conversion output control, in which, the hardware includes a singlechip control circuit, a single-stage total bridge inversion circuit, a storage battery charge circuit, a high frequency electronic ballast circuit, a solar energy cell, storage batteries and luminaries, the controller is charged by MPPT to increase the system efficiency and applies frequency conversion output to control the current of the lamp, besides, a design of machine-card separation is applied to the controller on the structure to meet the needs of different luminaries and lamination, the control structure is integrated in a control card suitable for software upgrading.

Description

technical field [0001] The invention belongs to the field of power electronics application technology and new energy application power generation technology, and is especially suitable for solar high-pressure sodium lamp lighting systems, widely used in municipal engineering, roads, and garden lighting places, to meet the requirements of intelligent lighting control, intelligent charging and energy management, and high efficiency. energy saving requirements. Background technique [0002] At present, in photovoltaic power generation application systems, using high-pressure gas discharge lamps to realize solar photovoltaic lighting is one of the most widely used photovoltaic lighting technologies. In the prior art, photovoltaic lighting systems mainly have problems such as low working efficiency of solar cells and low system energy conversion rate, short battery life, and unstable system operation. With the single-stage inverter, since there is only one energy conversion link...

AI Technical Summary

Problems solved by technology

In the existing technology, the photovoltaic lighting system mainly has problems such as low working efficiency of solar cells and low energy conversion rate of the system, short battery life, and unstable operation of the system.

However, if the single-stage inverter is used, since there is only one energy conversion link in the system, it is necessary to consider tracking the maximum power point of the solar cell, and at the same time ensure the amplitude and sine degree of the load terminal current. The control is more complicated.

At present, it is still rare to use this topology in practical photovoltaic power generation systems, and the single-stage topology used in solar lighting systems is even rarer.

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