Performance analysis of forced commutated controlled series capacitor rectifier for more electric aircraft

Tahani H.M. Al-Mhana, Volker Pickert, Bashar Zahawi, David J. Atkinson

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The forced commutated controlled series capacitor (FCSC) rectifier has been recently proposed to power stand-alone variable-voltage variable-frequency generation systems, such as the full authority digital electronic control (FADEC) system, in more electric aircraft. The employment of this rectifier helps to meet increasing power demand requirements while maintaining low current harmonic levels without the need for bulky filters. The FCSC rectifier is controlled to maintain resonance with line frequency variation by inserting variable capacitive reactance in series with the variable-frequency generator's inductive reactance. Unity power factor operation with nearly pure sinusoidal converter input currents is thus achieved, for better utilization of the generator. The FCSC rectifier operation with a variable dc on-board load is analyzed in this paper, including a description of the principle modes of operation of the circuit. The enhancement in circuit's output voltage and output power achieved by replacing the conventional diode bridge rectifier with the FCSC rectifier is also demonstrated. Both rectifiers are analyzed numerically using Saber/Synopsys over a wide range of operating voltages and frequencies. Results are experimentally verified using 1-kW laboratory test rig.

Original languageBritish English
Article number8584480
Pages (from-to)5759-5768
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Issue number7
StatePublished - Jul 2019


  • AC-DC power converters
  • Forced commutated controlled series capacitor (FCSC)
  • More electric aircraft (MEA)
  • Power factor correction (PFC)


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