Novel voltage reduction energy saver based on 'AC-AC' chopping power electronic technology

Abstract

The invention provides a novel voltage reduction energy saver based on an 'AC-AC' chopping power electronic technology. The novel voltage reduction energy saver comprises a null line input end, a phase line input end, a null line output end, a phase line output end, a first switch, a second switch, a third switch, a first capacitor assembly, a second capacitor assembly, a first high-frequency switch, a second high-frequency switch, an inductance coil and a controller. The first high-frequency switch and the second high-frequency switch are in series connection to constitute an 'AC-AC' chopper, the inductance coil and the second capacitor assembly are in series connection to constitute a low pass filter, and the 'AC-AC' chopper is connected. A standby circuit is further arranged between the phase line input end and the phase line output end. According to the technical scheme, line voltages can be adjusted smoothly and continuously, flexible control over a light source is achieved, when a chopping voltage reduction branch circuit in the circuit breaks down, the branch circuit only needs to be switched to a standby circuit, and accordingly the chopping voltage reduction branch circuit can be repaired in the state that an illuminating system works normally.

Description

technical field [0001] The invention relates to the field of lighting, in particular to lighting lamps used in various places. Background technique [0002] Nowadays, lighting systems are widely used in various fields, and their huge existence base is doomed to huge energy consumption, so the energy saving of lighting systems has always been our research topic, but there are always big problems in ordinary energy-saving devices, such as: [0003] (1) While improving the power factor through the "system power-saving filter", the voltage is reduced to achieve energy-saving effects. This product can improve the power factor, but the energy-saving effect is average, especially in the case of high power factor (pure resistive circuit), the energy-saving effect is very low. [0004] (2) "SCR phase-controlled energy-saving products" use the phase-shift trigger of the thyristor (thyristor) to perform chopping and voltage regulation on the grid voltage. In lighting energy saving, t...

AI Technical Summary

Problems solved by technology

Stepping down the voltage through an autotransformer is the most energy-saving lighting product on the market, but the flashing phenomenon that always occurs can easily cause the lighting device to go out, there is no voltage stabilization function, the three phases cannot be adjusted independently, and the product reliability is also low.

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