Modelling mutual thermal interactions between power LEDs in SPICE

Górecki, Krzysztof

doi:10.1016/j.microrel.2014.11.003

Cited by 48 publications

(32 citation statements)

References 20 publications

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“…The models presented in [7][8][9][10][11][12][13][14][15] have parameters that are difficult to measure, as the junction temperature for instance, because this variable needs to be measured inside the LEDs, which is difficult to access. The model presented in [16,17] also incorporates optic concepts that are not essentials to simulate the electric behaviour of the LEDs.…”

Section: Simulation Example With a Dc-dc Convertermentioning

confidence: 99%

“…The LED parameters are evaluated by means of straightforward measurements of current and voltage with the help of conventional instruments like multimeter and oscilloscope, which are available in a conventional electronic laboratory. Presently, there are some models proposed in the literature [7][8][9][10][11][12][13][14][15][16][17][18], but they are difficult to use, because they have several optical and thermal parameters to be extracted like for example the LED junction temperature.…”

Section: Introductionmentioning

confidence: 99%

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Simplified electrical modelling of power LEDs for DC–DC converter analysis and simulation

Osorio

Alonso

Pinto

et al. 2017

Circuit Theory & Apps

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SUMMARYThis paper presents a model of power light emitting diodes (LEDs) based on electrical variables and considering the concept of LED 'equivalent resistance', which has previously been used in discharge lamp modelling and is suitable to achieve fast simulations of LED converter systems. The model can be obtained with only some simple electrical measurements, thus making its implementation quite straightforward. The proposed model is oriented to the electronic engineering area, and it has special application for the simulation of the electrical behaviour of LEDs and dc-dc converter systems by using software like Simulink. In addition, the proposed model can also be employed for the theoretical analysis and design of LED drivers. Experimental and simulation results are obtained proving the feasibility of the proposed model.

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Section: Simulation Example With a Dc-dc Convertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simplified electrical modelling of power LEDs for DC–DC converter analysis and simulation

Osorio

Alonso

Pinto

et al. 2017

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…The descriptions of the electric model and the optical model are presented in the paper by Górecki (2015) and will not be presented in this paper in detail. The considered model takes into account the diffusion component of the diode current, series resistance and the influence of temperature on the DC characteristic of the diode operating in the forward mode.…”

Section: The Model Formmentioning

confidence: 99%

“…The manner of estimating the value of electric and optical parameters existing in the model of the power LED is described in the paper by Górecki (2015), whereas the manner of the measurement of transient thermal impedances of the power LEDs is described in the paper by Górecki (2014). Furthermore, the manner of the measurement of mutual transient thermal impedance between power LEDs is presented by Ptak (2014a, 2014b).…”

Section: The Model Formmentioning

confidence: 99%

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Modelling mutual thermal coupling in LED modules

Górecki

Ptak

2015

Microelectronics International

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If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The purpose of this paper is to present an electrothermal model of the module containing power light emitting diodes (LEDs) situated on a common base. Design/methodology/approach -The electrothermal model of this device, which takes into account both self-heating and mutual thermal coupling between the diodes situated in this module, is described. Findings -The correctness of the presented model is verified experimentally, and a good agreement of the calculated and measured optical and thermal characteristics of the considered module is obtained. Research limitations/implications -The presented model can be used for different structures of the LED module, but electrical inertia in the diodes is omitted. Practical implications -The presented model was used to calculate electrical, thermal and optical waveforms of the module OSPR3XW1 containing three power LED situated on the common base. Originality/value -The presented model takes into account thermal inertia in the considered LED module and its cooling systems with mutual thermal coupling between all the diodes situated in the same module.

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Modeling power supplies of LED lamps

Górecki

Ptak

2017

Circuit Theory & Apps

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Summary In the paper, the model of the power supply of the LED lamp in the form dedicated for SPICE is proposed. The form of the worked out by the authors' model is presented, and the results of experimental verification of this model for the LED lamp of the type CLA25 are shown. The presented model is elaborated only for the power supply of LED lamps, in which the constant output voltage is stabilized. This model has the form of a subcircuit for SPICE, and it describes the influence of load resistance, amplitude of the input voltage, and the ambient temperature on both the input current and the output voltage. It is confirmed that the worked out model describes correctly both the waveform of the current received from the electroenergy network and the influence of the load current, the ambient temperature, and the supply voltage on the output voltage.

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Modelling mutual thermal interactions between power LEDs in SPICE

Cited by 48 publications

References 20 publications

Simplified electrical modelling of power LEDs for DC–DC converter analysis and simulation

Simplified electrical modelling of power LEDs for DC–DC converter analysis and simulation

Modelling mutual thermal coupling in LED modules

Modeling power supplies of LED lamps

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