Multiphase parallel resonant converter for electrodeless lamp and light adjusting control method

A resonant converter and dimming control technology, which is applied in light sources, electric light sources, lighting devices, etc., to achieve the effect of expanding power output, avoiding adverse effects, and working stably and reliably

Inactive Publication Date: 2015-03-25
FUZHOU UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the development of high-frequency resonant conversion technology, it can be said that it is not difficult to light a qualified electrodeless bulb, but there are still ma

Method used

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  • Multiphase parallel resonant converter for electrodeless lamp and light adjusting control method
  • Multiphase parallel resonant converter for electrodeless lamp and light adjusting control method
  • Multiphase parallel resonant converter for electrodeless lamp and light adjusting control method

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] The present invention provides a multi-phase parallel resonant converter for electrodeless lamps. For the structural block diagram, see figure 1 . The converter includes a DC input, a switch network, a resonant network and an electrodeless lamp load; the input terminal of the switch network is connected to the DC input, the output terminal of the switch network is connected to the input terminal of the resonant network, and the output terminal of the resonant network is connected to the Electrodeless lamp load; the switch network is composed of n bridge arms connected in parallel, one of which is used as a phase-shifting bridge arm, and the remaining n-1 parallel bridge arms are non-phase driving bridge arms, and n is a natural number greater than 1.

[0018] The phase-shifting bridge arm is used as a dimming module of the resonant conv...

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Abstract

The invention relates to a multiphase parallel resonant converter for an electrodeless lamp and a light adjusting control method. The multiphase parallel resonant converter is composed of a switching network, a resonant network and an electrodeless lamp load. The switching network is composed of n bridge arms which are connected in parallel, wherein one bridge arm is used as a phase-shift bridge arm and is used for light adjusting control, the rest (n-1) bridge arms which are connected in parallel are same-phase drive bridge arms, the power output of the resonant converter can be enlarged, and the current stress of a switching tube is reduced. The light adjusting control method in which phase shift and phase lock are combined is also provided. The parallel resonant converter can always work nearby the inherent resonance points of the resonant network in the same-phase driving and phase-shift light adjusting process, adverse effects of drifting of the inherent resonance points caused by the change of the resonant network and lamp load parameters on the work of the lamp are avoided, and it is guaranteed that the electrodeless lamp works stably and reliably.

Description

technical field [0001] The invention relates to a multi-phase parallel resonant converter and a dimming control method for an electrodeless lamp, in particular to a multi-phase parallel resonant converter and a dimming control method for a high-power electrodeless lamp. Background technique [0002] In recent years, with the rapid development of my country's economy, energy shortage has made energy saving and consumption reduction a focus of attention. Lighting power consumption accounts for about 10% to 20% of the total power production, which is an important area of ​​energy saving. As a new type of gas discharge light source, the electrodeless lamp has the advantages of long life, high efficiency, and no flicker. The high-power electrodeless lamp is one of the important means to provide high luminous flux. It is widely used in tall factories and buildings, stadiums, parking lots, etc. In the field of high-power engineering lighting, especially in industrial mines, tunnel...

Claims

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Application Information

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IPC IPC(8): H05B41/28H05B41/36
Inventor 林国庆沈豫
Owner FUZHOU UNIV
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