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. Development and optimization of a matrix converter supplying an electronic ballast -UV lamp system for water sterilization. TMREES18-Spring Meeting "Technologies and Materials for Renewable Energy, Environment and Sustainability", Feb 2018, Beirut, Lebanon. pp.30058 -30058, 10.1063/1.5039245. hal-01802887 Development and optimization of a matrix converter supplying an electronic ballast -UV lamp system for water sterilization Abstract. Electronic ballasts dedicated to discharge lamps allow improving the quality of radiation by operating at high frequency. In the present work, the use of a single-phase direct converter with a matrix structure for supplying a lowpressure mercury-argon UVC lamp for water sterilization is proposed. The structure of the converter is based on two switching cells allowing the realization of a fully controllable bidirectional switches. The advantages of such a matrix topology include the delivered of a sinusoidal waveform current with a controllable power factor close to unity, variable in amplitude and frequency. In order to obtain the desired amplitude and frequency, a PWM control was associated in the current realization. Finally, a linear adjustment of the lamp arc current was warranted by using of a PI regulator.

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