Electric voltage regulating and controlling circuit of illumination light

Abstract

The invention provides a voltage regulation circuit of illuminating lights, which is suitable for an illumination system which is serially composed of a main power source and an illumination load. The single-phase illumination system comprises the main power source which outputs sine alternating current voltage, and the illumination load. The voltage regulation circuit of illuminating lights is in series connection in a loop which is formed by the main power source and the illumination load, and comprises a voltage regulation circuit and an auxiliary power source. The voltage regulation circuit is used for generating auxiliary voltage to regulate amplitude of the sine alternating current voltage which is loaded on the illumination load. Power consumption of the voltage regulation circuit of illuminating lights is small, harmonic wave loaded on the illumination load is also small, so that the alternating current voltage loaded on the illumination load is still of sine curve. The normal voltage requirement loaded by the illumination system is satisfied, in particular when being inputted with sine curved voltage, twinkling of an HID lamp or a fluorescent lamp is reduced, the power factor is enhanced, and the service life of an illuminating lamp is extended. In addition, the method is also suitable for other illuminating lamps inputted with the sine curved voltage.

Description

technical field [0001] The invention relates to a voltage regulation technology, in particular, the invention relates to a voltage regulation circuit for lighting lamps. Background technique [0002] In recent years, urban night scene lighting has become the mainstream of power supply at night. Bright lights have made most cities a city that never sleeps, bringing huge economic benefits and various conveniences to people's life, work, production and entertainment. At the same time, facing The biggest problem is the large amount of power loss for lighting. Therefore, lighting projects need to use high-efficiency energy-saving light sources, that is, use high-efficiency bulbs or lamp tubes, and take measures to install energy-saving control equipment on the existing lighting system. In order to meet the requirements of green, energy saving and environmental protection. [0003] High Intensity Discharged Lamp (HID) is a high-brightness gas discharge lamp, as a new energy-savin...

AI Technical Summary

Problems solved by technology

[0007] 1) The voltage output by the thyristor chopping cannot output a sine wave;

[0008] 2) A large number of harmonics appear, forming harmonic pollution to the power grid system, which is extremely harmful

[0009] 3) In order to eliminate the defects of harmonic pollution, it is very uneconomical to install filtering equipment for these high-power thyristor chopper-type energy-saving equipment, the cost is too high

[0011] 1) When the grid voltage fluctuates, the output voltage of the control device will also fluctuate up and down, so that the working voltage of the lighting is in an unstable and fluctuating state, and it is impossible to precisely control the light source;

[0012] 2) This voltage regulation method uses an AC contactor to switch gears. When the AC contactor is in the gear switching action, it is mechanically attracted and disconnected. At this time, there will be a short power failure of 10-20 milliseconds , we call it "flash", such a power failure will cause HID lamps (such as high-pressure sodium lamps, metal halide lamps, high-pressure mercury lamps, etc.) to go out

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