Novel DC-AC boost single-stage high-frequency inductance electronic ballast and working method thereof
An electronic ballast, boost type technology, applied in the field of lighting, can solve the problems of double voltage stress switch tube of push-pull circuit, turn off voltage spike, difficult to achieve soft switching, and circuit is not very ideal, etc., to achieve convenient control, Simple structure and small volume
Active Publication Date: 2017-03-15
WUHAN XINSHUANGYI SCI & TECH DEV
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Problems solved by technology
[0004] The push-pull circuit topology is usually used to invert the lower DC voltage into high-frequency AC power, but the push-pull circuit has the problems of twice the voltage stress and the turn-off voltage peak of the switching tube, and it is not easy to achieve soft switching
Using H-type full bridge or half bridge topology, the circuit is not very ideal
Method used
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[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0037] Such as figure 1 As shown, the novel DC boost type single-stage high-frequency inductive electronic ballast of the present invention mainly includes a power circuit and a control circuit, wherein the power circuit includes a start-up circuit 2, an energy storage capacitor 1, a half-bridge switch circuit 3, a series capacitor and a high Frequency pulse transformer 4, high frequency inductance 5; control circuit includes auxiliary power supply 6, drive circuit 7, given or display circuit 8, single chip or analog control circuit 9, output voltage and current sampling and conditioning circuit 10.
[0038] The topological structure of the power main circuit of the novel DC step-up type single-stage high-frequency inductive electronic ballast of the present invention is as follows: figure 2 As shown, it works in frequency modulatio...
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The invention relates to a novel DC-AC boost single-stage high-frequency inductance electronic ballast. The ballast comprises a power circuit and a control circuit, wherein the power circuit comprises a starting circuit, an energy-saving capacitor, a half-bridge switch circuit, a series capacitor, a high-frequency pulse transformer and a high-frequency inductor, and the control circuit comprises a singlechip microcomputer or an analog control circuit, an output voltage and current sampling and conditioning circuit and a driving circuit. By the ballast, direct current output from a 24V or 48V vehicle-mounted storage battery can be directly converted to a high-frequency alternating current, a required power supply is provided for lighting of a xenon lamp and other high-voltage gas discharge lamp, and the ballast is particularly and suitably used for an automobile xenon lamp and a searchlight.
Description
technical field [0001] The present invention relates to a ballast for xenon lamps and other high-pressure gas discharge lamps, specifically to a new direct-current step-up single-stage high-frequency inductive electronic ballast and its working method, belonging to HID lamps and other high-pressure gas discharge lamps, etc. field. Background technique [0002] Xenon lamps have been widely used in the field of lighting due to their good color rendering, high brightness, good energy-saving effect, and good light transmission, especially for automobile lights and searchlights. However, in order to ensure the reliable operation of gas discharge lamps such as xenon lamps, special electronic ballast. However, until now, the electronic ballasts with mature technology on the market are mainly in the form of two-stage structure and three-stage structure circuit. First, the input AC power is converted into DC power, and then the DC power is converted into AC output. The pre-stage ci...
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Login to View More IPC IPC(8): H05B41/288
CPCH05B41/2885Y02B20/00
Inventor 张国安
Owner WUHAN XINSHUANGYI SCI & TECH DEV