Power grid energy-saving constant current drive control system based on emitter coupled amplification

Abstract

The invention discloses a power grid energy-saving constant current drive control system based on emitter coupled amplification. The system is composed of an EMI single-phase filter, a silicon controlled rectifier, a boosting type power factor correcting circuit, a single-phase high-frequency frequency converter, a sampling protection circuit connected with the single-phase high-frequency frequency converter, a single-chip microcomputer, a band-pass filtering low-distortion oscillating circuit and a boosting type constant current driving circuit. The system is characterized in that an emitter coupled amplification circuit is also connected between the sampling protection circuit and the single-chip microcomputer in series; the boosting type constant current driving circuit is adopted, has the functions of under-voltage locking protection, over-voltage protection and over-temperature protection, has extremely high driving stability, and can effectively improve the accuracy of the control system; meanwhile, the emitter coupled amplification circuit is adopted and has a stable quiescent operating point, stable output current and high input resistance, and the energy-saving effect of the system is effectively improved.

Description

Technical field [0001] The invention relates to the field of power grid energy saving, in particular to a power grid energy-saving constant current drive control system based on emitter coupling amplification. Background technique [0002] At present, with the development of urbanization and the improvement of people's living standards, the electrical energy consumed by urban lighting has increased geometrically. In response to the call of the national energy conservation and emission reduction policy, the concept of smart grid has been increasingly recognized by everyone. Smart grid is the intelligentization of the power grid, also known as "Grid 2.0". It is a technical application based on an integrated, high-speed two-way communication network that can realize the reliability, safety, economy, efficiency, environmental protection and safety of the power grid. The goal. [0003] Among them, the frequency conversion energy-saving street lamp is an important unit of the smart grid...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the frequency conversion energy-saving street lamp control system in the current smart grid frequency conversion energy-saving system cannot effectively realize energy saving, and to provide a power grid energy-saving constant current drive control system based on emitter coupling amplification

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