Ac-Dc multi pulse converter for dc power distribution system in aircraft

ABSTRACT

The Transformer Rectifier Unit (TRU) in aircraft is DC power supplies. Three-phase AC power supplies are available as long as they work. DC power distribution, on the other hand, provides DC power directly to all DC users, providing input power to the emergency AC distribution system so that the static inverter can generate AC power. To the voltages produced by TRUs to be less oscillating and of higher quality, multi-pulse ones are studied and recommended for aircraft systems. In this study, Zener diode filtered multi-pulse rectifier, which can further reduce the oscillations in the output voltage, is recommended for aircraft. Three-phase half-wave rectifier design and analysis are presented to better demonstrate the effectiveness of Zener diode regulation in multi-pulse TRUs. First, the parts of the power system, which includes the rectifier circuit of a two-engine aircraft and fed by this rectifier, are given. The circuit structure and working order of the rectifier are given with mathematical explanations. In the application phase, low oscillating output voltages and currents are obtained by creating currents and voltages on the load for different Zener voltages. Conventional rectifiers and the proposed rectifier are tested on the same loads, and comparisons are done.

KEYWORDS:

• TRU
• Zener diode regulation
• two-engine aircraft

Disclosure statement

The author does not have any competing financial, professional, or personal interests from other parties.

Additional information

Notes on contributors

Erol Can

Erol Can received his master’s degree in 2010 from the Department of Electrical Engineering at Karadeniz Technical University. He received his Ph.D. from the Department of Electric at Gazi University in 2016. He still works at Erzincan Binali Yıldırım University as Assoc. Prof. Dr.

Ugur Kilic

Ugur Kilic received his master’s degree in 2016 from the Department of Electrical and Electronics Engineering at Fırat University. He received his Ph.D. from the Department of Avionics at Eskisehir Technical University in 2021. He still works at Erzincan Binali Yıldırım University as Asst. Prof. Dr.