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Low-electromagnetic-interference full-bridge high-frequency driving circuit, electronic ballast and illumination equipment

A driving circuit and circuit technology, applied in the field of lighting, can solve problems such as electromagnetic noise interference of electronic ballasts, and achieve the effect of reducing electromagnetic noise interference and high-order harmonic components

Inactive Publication Date: 2018-08-17
FUJIAN RAYNEN TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The technical problem mainly solved by this application is to provide a full-bridge high-frequency drive circuit, electronic ballast and lighting equipment with low electromagnetic interference, which can solve the serious problem of electromagnetic noise interference of traditional electronic ballasts

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  • Low-electromagnetic-interference full-bridge high-frequency driving circuit, electronic ballast and illumination equipment

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0018] Such as figure 1 As shown, the first embodiment of the low electromagnetic interference full-bridge high-frequency drive circuit of the present application includes: a full-bridge inverter circuit 101 and a high-frequency resonance circuit 102 .

[0019] The full-bridge inverter circuit 101 includes a first switching tube Q1, a second switching tube Q2, a third switching tube Q3 and a fourth switching tube Q4, wherein one end S1 of the firs...

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Abstract

The invention discloses a low-electromagnetic-interference full-bridge high-frequency driving circuit, electronic ballast and illumination equipment. The low-electromagnetic-interference full-bridge high-frequency driving circuit comprises a full-bridge inversion circuit and a high-frequency resonance circuit; the full-bridge inversion circuit comprises a first switching tube, a second switching tube, a third switch tube and a fourth switching tube, wherein the first switching tube and the third switching tube are connected in series and then connected in parallel to the two ends of a direct current power supply; the second switching tube and the fourth switching tube are connected in series and then connected in parallel to the two ends of the direct current power supply; the high-frequency resonance circuit comprises a first resonance inductor, a second resonance inductor, a first resonance capacitor and a second resonance capacitor which are connected in series, wherein the second resonance capacitor is coupled between the first resonance inductor and the second resonance inductor; and the two ends of the second resonance capacitor are connected with an output line. By virtue ofthe mode, electromagnetic interference of the electronic ballast output line to the external environment can be lowered.

Description

technical field [0001] The application relates to the technical field of lighting, in particular to a full-bridge high-frequency drive circuit with low electromagnetic interference, an electronic ballast and lighting equipment. Background technique [0002] With the rapid development of modern agriculture, the use of high-intensity discharge (High Intensity Discharge, HID) light source to supplement the light for intelligent growth of plants has been widely promoted at home and abroad. In response to the demand for supplementary light for greenhouse plant growth, some lighting companies have successively launched high-power plant lighting HID double-ended light sources, and require the output operating frequency of the corresponding electronic ballast to be greater than 100KHz. Traditional electronic ballasts are developed based on high-frequency power electronics technology, using switching power supply topology, there are huge electromagnetic harmonics, high-frequency nois...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/28
CPCH05B41/28
Inventor 叶跃明陈云辉徐志望陈振佳
Owner FUJIAN RAYNEN TECH
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