A Simplified Three Phase PWM Current Source Rectifier for Hydrogen Electrolyzers

Le résumé fourni par la source

This paper presents a simplified three-phase Pulse Width Modulation (PWM) current source rectifier, employing a reduced number of active switches, as a power conversion solution for large-scale industrial hydrogen electrolyzers. To enhance performance, a new one-twelfth wave symmetry modulation technique, combined with selective harmonic mitigation, is implemented to suppress low-order harmonics-specifically the 5th, 7th, 11th, 13th, 17th, and 19th—in the input line currents. A design case study is discussed, demonstrating the conversion of a three-phase 4160 V AC input to a 1500V DC output in the megawatt range. Real-time open-loop control verification is conducted using a hardware-in-the-loop (HIL) platform. The proposed rectifier and control algorithm enable precise output current regulation and effective harmonic suppression through single-stage conversion. Furthermore, the current source nature of the topology, the risk of shoot-through between phases is eliminated. These advantages along with only 3 active switches collectively contribute to improved reliability and higher performance in hydrogen electrolyzer systems.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.