Modeling of Corona Discharges for High-Voltage Applications in Active Ionic Wind Cooling of High-Power LEDs Lighting

Ionic wind generation is a good candidate for cooling high power LED lights because it is both quiet, with no moving mechanical parts and very energy efficient. This preliminary work relates to a simulation of the corona discharge of a wire and two plates in air under atmospheric pressure. The results for the same structure are compared with previously published experimental work for ionic wind and temperature and are in good agreement. The use of a narrow diameter wire which achieves a positive corona discharge in air leads to the base plate of an electrode is shown. Hydrodynamics and electrostatics are taken into account in this model. The simulation presented concerns steady-state regimes with the discharge maintained with 9 kV applied to the inner electrode while the outer electrode is grounded. The inconvenient is the lack of a rigorous comparison with experimental airflow, air velocity and current-voltage result. These results are important because they are used as a method of cooling the heat sink of the high-power light-emitting diode, as verified in this work, and also to develop this effect for practical purposes. The dependence of the cooling efficiency on the distance between the plates and the wire was studied.