Numerical control method of pure-solid new HID lamp's electronic ballast and circuit

Abstract

The invention discloses a numerical control method of a pure-solid new HID lamp's electronic ballast. An input AC power supply is connected in series to a power supply circuit of a new HID lamp so as to form heavy current direct-fed AC-AC topology; the AC power supply respectively charges energy-storage capacitors C1 and C2 through AC-DC voltage doubling rectifying, and DC voltages of the two energy-storage capacitors are in forward series connection to be superposed to form DC bus voltage used for starting the new HID lamp; electronic power switches S1 and S2 are respectively controlled by push-pull work of a single-chip microcomputer to respectively finish current high-frequency positive half-wave and negative half-wave power supply; and in dead time of the two electronic power switches which are both switched-off and through a flow current process, constant power operation of the new HID lamp is realized. The pure-solid new HID lamp's electronic ballast is suitable for global AC 100-280 V industrial power supplies, can be compatible with traditional gas discharge lamps, can stably and reliably realize glow-starting and constant power operation of a new HID lamp with its lamp voltage being 250V and above, eliminates the harm of acoustic resonance, has high reliability, reduces harmonic interference and EMC interference and has high electric power efficiency.

Description

technical field [0001] The invention relates to a numerical control method and a circuit of a pure solid-state new HID lamp electronic ballast. Background technique [0002] HID lamp is the abbreviation of "high-intensity gas discharge lamp", such as: xenon lamp, metal halide lamp, high-pressure mercury lamp, high-pressure sodium lamp, thallium-vanadium sodium lamp, etc., have mature technology and mass industrial production equipment for mass production. There are industry standards, ministry standards, national standards and other normative documents. So far, HID is still the main force in the global high-power public lighting cost-effective selection. [0003] Although LED luminous efficacy has been increased to 303 lumens per watt, high-efficiency LEDs are too expensive, and high-power LED lights have lost the advantages of point light sources; while HID lights and new HID lights are high-power point light sources with excellent cost performance and light control. Exc...

AI Technical Summary

Problems solved by technology

The reliable old method uses the topology of BOOST step-up APFC, which can obtain a regulated 400 volt bus DC, and supply power to the full-bridge or half-bridge push-pull to drive new HID lights. Breakthrough, so the price of electronic ballasts for new HID lamps cannot drop

Images