Flicker-free lighting, influence of supply voltage
The quality of the light from a light source and how we perceive the stability of the light (flicker) depends not only on the design of the lamp but also on the quality of the voltage supplying the lamp.
The quality of the light from a light source and how we perceive the stability of the light (flicker) depends not only on the design of the lamp but also on the quality of the voltage supplying the lamp. Variations in the voltage rms value can cause lighting to flicker in a way that is perceived as disturbing. The types of voltage variations that affect LED lamps are far more complex than for traditional lighting such as incandescent lamps. The aim of the project is to assess the quality of the resulting light from an LED lamp connected to the grid. Input to the quality assessment will be the characteristic of supply voltage focusing on variations in the rms voltage caused by adjacent equipment such as electric cars and variable speed drives. The work will also be towards developing limits for disturbances in voltage based on amplitude variations, frequency variations and duration of these disturbances.
Funding: Swedish Energy Agency.
Project participants: Sarah Rönnberg, Aurora Gil, Selçuk Sakar, Elena Gútiérrez Ballasteros.
Collaboration: University of Cordoba.
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