Olga Morozova is Deputy Director of Overseas Operations of RUSALOX, LCC and has deep market expertise in the areas of LED lighting and power electronics as well as solid understanding of the market trends and challenges of thermal management in existing LED systems. Switching several top management positions and workplaces, Olga has been involved in a range of R&D projects aiming at eliminating current heat dissipation obstacles and at creating new generations of various devices for multiple applications.
Equivalently Equal Electrical, Optical and Thermal Parameters Open New Design Possibilities of LED Devices
Despite the recent revolution of the light source solutions has been based on three fundamental parameters – electrical, optical and thermal. All the game was concentrated only on the electro-optical characteristics and their modifications. The thermal criteria of any LED solution has not been seen as an additional degree of freedom for robust engineering solutions and as means to be distinguished between standard 2W MCPCB (Metal-Corb PCB) and COB (Chip-On-Board) based on ceramics. The team of the high technology developer and manufacturer RUSALOX has spent over 4 years on researches, R&D projects and creation of the LED solutions based on high thermal conductive aluminum oxide (al oxide) PCBs with the light sources of the world-leading manufacturers and, consequently, has identified a number of trends that have already now become embedded in the final products of the major producers of LED devices.
The main objective of the previous RUSALOX’ researched was focused on eliminating the stereotypes of the thermal management and on completely new possibilities of the designs of the solutions. The solutions of RUSALOX have opened new working capabilities with LEDs and proved that high density mounting of light sources leads to:
- It does not lead to overheating
- The placement of several LEDs in one cluster does not require lens change
- The obtained luminous intensity curves have good right shapes
- The efficacy is increased significantly
- Increasing the wattage of the solution does not require an additional heat sink
- The connection of the LEDs can be both serial and parallel
- With the ‘correct’ serial connection, the efficacy is 10-15 % higher than on the same analogue with the parallel connection
- It is possible to combine any LEDs in a cluster as per the light output and colours for any smart solution
- The correct LED combination decreases the value cost of a final luminaire on 30 %
This high-densed cluster LED solutions are being a totally new trend on the market when it is no longer a search or a substitute of standard COBs. Customers are no longer obliged to integrate their products in the standard lenses and this trend is the nearest future of all the industry.
The main idea of this part is that we step by step describe and explain the above-mentioned bullet points with the proved measurements and evaluations.
- Customer shall not change a heat sink even if we has 30 W ones (or 60 or 90 W), due to efficient heat dissipation provided by al oxide PCBs, a customer can save up on additional costs and stay with the beloved heat sink.
- If we place several LEDs with different footprints in one cluster, it does not affect the colour rendition.
- Cluster solutions help to achieve the maximum efficacy. A brief into of CSP technology and possibilities to work with it and high power solutions on a small unit area.
- Serial connection leads to higher efficacy of the whole LED system.
- Horticulture solutions (co-called phyto-solutions at RUSALOX) allow building up any cluster with any wattage and each colour can be managed and controlled separately. This leads to totally new possibilities in smart-solutions designing.
Thermal management is a full-valuable characteristic of any LED system, which must be taken into consideration, not be afraid of and affect the new generation solutions.