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Light dimming method suitable for electromagnetic induction lamp

An electromagnetic induction lamp, dimming technology, applied in the direction of electric light source, light source, electrical components, etc., can solve the problem of PFM dimming range is not wide, achieve smooth wide-range dimming, high dimming precision, wide dimming range Effect

Inactive Publication Date: 2015-04-22
FUZHOU UNIVERSITY
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method that overcomes the above-mentioned defect of PFM dimming range is not wide, and solves the shortcomings of PDM stepwise dimming, and realizes smooth wide-range dimming of electromagnetic induction lamps with wide dimming range and dimming. Dimming method suitable for electromagnetic induction lamp with advantages of high precision and high reliability

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  • Light dimming method suitable for electromagnetic induction lamp
  • Light dimming method suitable for electromagnetic induction lamp
  • Light dimming method suitable for electromagnetic induction lamp

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Embodiment Construction

[0016] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0017] The invention relates to a dimming method suitable for electromagnetic induction lamps. N dimming stages are set, and a fixed integer multiple of the working cycle of the electromagnetic induction lamp is set in the same dimming stage as the conduction time of the PDM (the conduction time of the PDM = n*Ts, where n is an integer greater than or equal to 1 and n is a fixed value in this dimming stage, Ts is the working cycle of the electromagnetic induction lamp), PDM dimming is realized by controlling the off time of PDM in this dimming stage Smooth change of duty cycle; wherein, N is a natural number greater than or equal to 1.

[0018] Further, set different integer multiples of the duty cycle of the electromagnetic induction lamp as the on-time of the PDM in different dimming stages, that is, set different on-times of the PDM in...

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Abstract

The invention relates to a light dimming method suitable for an electromagnetic induction lamp. By means of the method, subsection dimming, pulse number modulation (PDM) and frequency conversion are combined, and the novel subsection frequency conversion PDM light dimming method is obtained; N light dimming stages are set, different-integral-multiple electromagnetic induction lamp work cycles are set at the different light dimming stages to serve as PDM turn-on time, namely the PDM turn-on time set at the different light dimming stages is different. It is guaranteed that the PDM turn-on time at the same light dimming stage keeps unchanged, and smooth changes of the PDM light dimming empty rate are achieved by controlling the PDM turn-on time of the light dimming stages. By means of the light dimming method, the defect that the PDM light dimming scope is not wide is overcome, the shortcoming of PDM staged light dimming is overcome, and smooth and wide-scope light dimming of the electromagnetic induction lamp is achieved. The light dimming method has the advantages of being wide in light dimming scope, high in light dimming accuracy, high in reliability and the like.

Description

technical field [0001] The invention relates to the technical field of dimming of electromagnetic induction lamps, in particular to a dimming method suitable for electromagnetic induction lamps. Background technique [0002] Energy saving, low-carbon and environmental protection are not only the green lifestyle advocated by modern society, but also the main way to solve the energy shortage in the world today. The good energy-saving effect, high luminous efficiency and long life of the electromagnetic induction lamp make it an important research direction of green lighting. The dimming control of electromagnetic induction lamps can not only achieve the purpose of lighting energy saving, but also avoid harmful glare, which is an important indicator for realizing green lighting. [0003] At present, domestic and foreign studies on dimming control strategies for electromagnetic induction lamps mainly focus on two aspects: rectifier-side dimming and inverter-side dimming. Wave ...

Claims

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Application Information

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IPC IPC(8): H05B41/36
CPCY02B20/00
Inventor 林国庆杜志川
Owner FUZHOU UNIVERSITY
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