Road lamp illumination power-saving device based on compensation type AC wave chopping technology

Abstract

The invention discloses a power-saving device for road lamp illumination based on compensation type alternating-current chopping technology comprising main circuit and control circuit. A first IGBT switch tube S <0>, a second switch tube S<1>, a third switch tube S<2> of main circuit are serially connected, a single phase AC power supply U connects two ends of the serially connected three IGBT switch tubes, A inductor L and capacitance C constitutes a wave filter circuit and are parallel at two sides of a compensation transformer T, primary edge of compensation transformer is parallel to the second switch tube S<1> and the third switch tube S<2>,and secondary edge of compensation transformer T is serially connected with lighting lamp Z <0> then connects two ends of single phase AC power supply U.The control circuit is used for controlling and detecting main circuit. The inventive product only uses three switches device and uses compensation transformer for regulating voltage. Control device only consumes part of the power. Compared to existing electricity saver, the inventive product is simple and cost lowly, and switching loss is small.

Description

technical field [0001] The invention relates to the technical field of energy saving, in particular to a street lamp lighting power saving device based on compensation type AC chopper technology. Background technique [0002] With the continuous deepening of China's urbanization and rapid and sustained economic development, people's living standards are also constantly improving. In the bustling city, urban roads and night scene lighting have become a symbol of urban civilization and a representative of urban culture. In the process of promoting urban lighting projects, lighting sources and control equipment have achieved unprecedented development. At the same time, the power consumption of urban lighting and the loss of lamps are also increasing. are getting more and more attention. Applying energy-saving technology to lighting street lamps has become the general trend. [0003] At present, power saving of street lamp lighting usually adopts appropriate reduction of powe...

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Problems solved by technology

[0005] However, the traditional single-phase AC chopper technology generally uses four switching devices, which consumes a lot of power and costs. Therefore, reducing the number of switching devices is very important for simplifying control, improving reliability, and achieving high efficiency and high frequency. However, At present, there is no AC chopper control device that can reduce the number of switching devices and achieve better power saving and energy saving

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