ELT at Led Professional Symposium 2018

Monday, 1 October, 2018

ELT Especialidades Luminotécnicas S.A.U. has been, on more year, at Led Professional Symposium (LpS), the Europe‟s leading event for design, testing and production of lighting systems, controls and equipment.

Under the motto "Lighting technologies of tomorrow‟, LpS 2018 included a complete programme of lectures giving by the lighting professionals from all over the world including two members of ELT.

These were the lectures:

- “Simulation techniques during the process of LED driver development” giving by Mr.Antonio Cuadra, research and development engineer. Find enclosed a brief of the lecture:

Every LED driver is composed by one, two or sometimes three different topologies based on power electronic components: magnetics, MOSFETs and DIODEs working under hard conditions. The electronics reliability is limited by the stress that these components are able to support. More and more, LED drivers are demanded with a wide range of output power, so the operation of this kind of topologies integrated in the LED driver has many variations far away from its optimal design operation. This is especially critical in topologies like LLC resonant topology (going out of ZVS operation or third resonance problems) or Power Factor Corrector Booster topology (increasing switching power losses due to very light load operation).

Using topologies simulations, magnetics involved in the LED driver can be designed in an optimal way, fitting them into the application. Using this way of design, all functional parameters, such as frequency operation or Duty Cycle can be estimated and fixed in final application. It is especially interesting if we may foresee Conducted Electro-Magnetic Interferences by setting switching frequencies. Also, this method provides all information about electrical parameters like voltage or currents through components, allowing the engineer to estimate power losses and how are they distributed on the circuit, in all components. In addition, power losses can be distributed in a regular way between transformer and semiconductors or between wire and core in a transformer in order to find the maximum efficiency allow in the application, achieving the best trade-off.

In the LpS 2018, multiple simulation techniques based on freeware tools have been showed with their benefits: Optimizing size, costs and efficiency. Also, this methods allow to the R & D department reduce de designing time due to the number of iterations in the designing without doing a strong investment in money buying simulation tools or required time developing these simulation models

- “Water metering data acquisition and transmission through street lighting enabled network” giving by Mr.Arturo Rubio, business development manager. Also find enclosed a brief of the lecture:

“With the advent of digitalisation and connectivity in a sector such as lighting, new paradigms for interoperability between services are generated, which facilitate and improve the citizen experience. The street lighting network, because of its privileged location, can play a determining role. The street lighting network is visible in the most remote locations and covers almost every inhabited area worldwide. Its privileged position close to residents and thanks to its connection to the power grid not only provides the essential street lighting service, but also acts as the ideal platform from which to support many others.

This is a major challenge given that this network must have a high availability ratio and provide a robust service, for which it is necessary to carry out an adequate deployment. In return, it allows us to have interoperability between the different urban services, to be more efficient in the management of them and to provide them to the citizen with higher quality.

Water supply is one of the most important urban services in a city. Its proper management is a guarantee of water quality, of the sustainability of the service through the optimization of resources as well as a correct quantification and valuation of the cost of said infrastructure.

Currently there are advanced systems for the measurement of water flows, both for human and industrial consumption. Many of these systems incorporate data acquisition and transmission capabilities. However, this is not always easy since these systems often have important limitations such as the use of limited lifetime batteries, the lack of connection to the electricity grid or their location in places of difficult access or in the absence wired or wireless connectivity. All this makes it difficult or expensive to manage the valuable data provided by these systems.

We have shown at LpS annual LED lighting meeting in Bregenz, through a practical case, how to facilitate the acquisition and transport of data from water meters through the use of a nearby street lighting enabled communications network”.


Additionally during the event ELT showcased its latest novelties including programming tools and technologies as a worldwide supplier of complete lighting solutions.


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