Stochastic pulse density modulation for a power LED driver

IF 0.5 Q4 OPTICS

Photonics Letters of Poland Pub Date : 2020-07-01 DOI:10.4302/plp.v12i2.1027

W. Wojtkowski, R. Kociszewski

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引用次数: 0

Abstract

PWM signals are widely used and are easy to implement in a variety of LEDs applications, however they suffer from significant harmonic generation. As an alternative, SPDM - Stochastic Pulse Density Modulation or SSDM – Stochastic Signal Density Modulation ideas may be considered. The SPDM idea is to spread the energy at different frequencies so that it is easier to filter the desired harmonics, because of their lower amplitudes. Example of implementation of SPDM in LED application using a programmable system-on-chip device is presented in the paper. Proper operation of the proposed implementation is proved by the laboratory results. Full Text: PDF References W. Wojtkowski, A. Karpiuk, The Influence of the PWM frequency and duty cycle of a RGB LED driver on the optical spectrum of the emitted light, Przeglad Elektrotechniczny, 2012, R. 88, nr 4a, pp. 217-219. CrossRef J. Hegedus, G. Hantos, A. Poppe, Light output stabilisation of LED based streetlighting luminaires by adaptive current control, Microelectronics Reliability, vol. 79, pp. 448-456, 2017. CrossRef J. Kusznier, W. Wojtkowski, Spectral properties of smart LED lamps, PHOTONICS LETTERS OF POLAND, VOL. 12 (1), 16-18 (2020) CrossRef I. Fryc, P. Tabaka, "Zanieczyszczenia nocnego niebosklonu światlem emitowanym przez oprawy oświetlenia zewnetrznego", Przeglad Elektrotechniczny R93(6), 46 (2017). DirectLink I. Fryc, F. Bisegna, P. Tabaka, Lighting of recreation grounds as a source of sky glow - the influence of luminaire type on this phenomenon, 1st IEEE International Conference On Environment And Electrical Engineering and 17th IEEE Industrial And Commercial Power Systems Europe (2017). CrossRef M. Gilewski, "The ecological hazard of artificial lighting in greenhouses", Photon. Lett. Poland 11(3), 87 (2019). CrossRef J. Kusznier, W. Wojtkowski, Impact of climatic conditions on PV panels operation in a photovoltaic power plant, IEEE, 2019 15th Selected Issues of Electrical Engineering and Electronics (WZEE), Zakopane, Poland (2019). CrossRef J. Kusznier, W. Wojtkowski, Impact of climatic conditions and solar exposure on the aging of PV panels, IEEE, 2019 15th Selected Issues of Electrical Engineering and Electronics (WZEE), Zakopane, Poland (2019). CrossRef PSoC® Technical Reference Manual - Document No. 001-14463 Rev. *K. Cypress Semiconductor Corp. 2017. DirectLink

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功率LED驱动器的随机脉冲密度调制

PWM信号被广泛使用，并且易于在各种LED应用中实现，然而它们会产生显著的谐波。作为替代方案，可以考虑SPDM-随机脉冲密度调制或SSDM-随机信号密度调制思想。SPDM的想法是将能量分散在不同的频率，这样就更容易滤波所需的谐波，因为它们的振幅较低。本文介绍了用可编程片上系统器件在LED应用中实现SPDM的例子。实验室结果证明了拟议实施的正确操作。全文：PDF参考文献W.Wojtkowski，A.Karpiuk，RGB LED驱动器的PWM频率和占空比对发射光光谱的影响，Przegled Elektrotechniczny，2012，R.88，nr 4a，pp.217-219。CrossRef J.Hegedus，G.Hantos，A.Poppe，通过自适应电流控制实现LED路灯灯具的光输出稳定，微电子可靠性，第79卷，第448-4562017页。CrossRef J.Kusznier，W.Wojtkowski，智能LED灯的光谱特性，波兰PHOTONICS LETTERS，第12卷（1），16-18页（2020）CrossRef I.Fryc，P.Tabaka，“Zanieczszczenia nocnego niebosklonuświatlem emitowanym przez oprawy o 347 wietlenia zewnetrznego”，Przegley Elektrotechniczny R93（6），46页（2017）。DirectLink I.Fryc、F.Bisegna、P.Tabaka，《作为天光来源的娱乐场所照明——灯具类型对这一现象的影响》，第1届IEEE国际环境与电气工程会议和第17届IEEE欧洲工业和商业电力系统会议（2017）。CrossRef M.Gilewski，“温室人工照明的生态危害”，光子。Lett。波兰11（3），87（2019）。CrossRef J.Kusznier，W.Wojtkowski，气候条件对光伏发电厂光伏板运行的影响，IEEE，2019第15期电气工程与电子选刊（WZEE），波兰扎科帕内（2019）。CrossRef J.Kusznier，W.Wojtkowski，气候条件和太阳照射对光伏电池板老化的影响，IEEE，2019第15期电气工程与电子选刊（WZEE），波兰扎科帕内（2019）。CrossRef PSoC®技术参考手册-文件编号001-14463修订版*K。赛普拉斯半导体公司2017。对讲机功能

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来源期刊

Photonics Letters of Poland OPTICS-

CiteScore

1.40

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0.00%

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