High-pressure sodium lamp electronic energy converter

Abstract

The invention relates to a high-pressure sodium lamp electronic energy converter, comprising an EMI anti-jamming filtration circuit, a rectification circuit, an APFC power factor correction circuit, a semi-bridge inversion circuit, a triggering start circuit, a PWM pulse control protection circuit and a high-frequency high-pressure lighting circuit. A frequency conversion technique is used for realizing sound resonance protection; a relay, a capacitor and an inductor are used for realizing pulse start lighting; detection output current is used for realizing light open circuit (loading) protection; and the feeding current automatically reduces to zero when the light is in short circuit, thereby preventing the electronic energy converter from being damaged. The invention has small start current, a power factor of above 0.99, stable working performance, low cost and long service life; besides, the electric power required by the bulb is reduced by above 30 percent under the same illumination, thereby the invention saves energy remarkably and is simple to install and convenient to promote.

Description

technical field [0001] The invention relates to an electronic transducer for a high pressure sodium lamp Background technique [0002] At present, in domestic and foreign markets, industrial and agricultural production, national defense construction, medical care, transportation and other fields are inseparable from lighting sources. Its high-pressure sodium lamps are widely used in roads, squares, residential areas, docks and public places. [0003] The traditional high-pressure sodium lamp inductive ballast has the disadvantages of low power factor and large self-loss. The use of a large number of low power factor electrical appliances will cause harmonic pollution to the power grid, which not only increases the load of power supply equipment, but also makes power generation facilities unable to obtain Fully utilized, and seriously affect the normal operation of other electrical equipment. [0004] In today's world where energy saving, emission reduction, and green light...

AI Technical Summary

Problems solved by technology

[0003] The traditional high-pressure sodium lamp inductive ballast has the disadvantages of low power factor and large self-loss. The use of a large number of low power factor electrical appliances will cause harmonic pollution to the power grid, which not only increases the load of power supply equipment, but also makes power generation facilities unable to obtain Fully utilized, and seriously affect the normal operation of other electrical equipment

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