Large-power HIG electronic ballast with excellent electromagnetic compatibility

Abstract

The invention discloses a large-power HIG electronic ballast with excellent electromagnetic compatibility, and the electronic ballast comprises an input AC power supply 1, a PFC boost topological circuit 3, a high-voltage DC bus 5, a high-frequency conversion output circuit 6, an HID lamp bubble 7, and a DC control power supply 8. The electronic ballast is characterized in that the electronic ballast also comprises a multi-filtering rectification circuit 2 which is used for enabling inputted AC power into DC power, isolating electromagnetic noises between the electronic ballast and the AC power supply, and enabling a direct current to be supplied to the PFC boost topological circuit 3 and the DC control power supply 8; the electronic ballast also comprises a swing frequency control circuit 9 which achieves swing frequency control through employing a built-in triangular wave generator and a built-in PFG controller, enables an obtained DC envelope to be boosted for output, eliminating the strong harmonic noises of a fixed-frequency PFC circuit, and obtains weak noises which are distributed uniformly; and a high-frequency absorption loop 4 which is used for reducing the high-frequency harmonic and DC ripples of a high-voltage DC bus 5, and improving the quality of outputted high-voltage DC power.

Description

technical field [0001] High-power HID electronic ballast, also known as driving power supply, is an important accessory for high-pressure gas discharge lamps (HID) to start and work normally. The invention relates to a high-power HID electronic ballast with excellent electromagnetic compatibility performance, which belongs to the field of lighting appliances, and can be matched with HID bulbs with different tube voltages such as high-pressure sodium lamps, metal halide lamps, high-pressure mercury lamps, and dysprosium lamps, and is used in cities. Street lighting, highway lighting, station, wharf, square, stadium lighting, industrial lighting, agricultural lighting, commercial lighting, etc. Background technique [0002] HID is currently the main light source for high-power lighting in this lighting field. Due to its advantages such as high luminous efficiency, high color rendering, and low color temperature, in today's rapid development of LED light sources, it still has g...

AI Technical Summary

Problems solved by technology

In order to create a better electromagnetic environment, since 2013, FCC has improved the electromagnetic compatibility standards of its products, stipulating that products must pass the new standard testing and certification of FCC18305: 2014 and FCC18307: 2014. After the standard is improved, except for the company, currently None of the domestic manufacturers has passed the

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