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Forced Commutated Controlled Series Capacitor Rectifier for More Electric Aircraft

Lookup NU author(s): Professor Volker Pickert, Dr Dave Atkinson, Dr Bashar Zahawi



This is the authors' accepted manuscript of an article that has been published in its final definitive form by IEEE, 2019.

For re-use rights please refer to the publisher's terms and conditions.


Rising power demands in More Electrical Aircraft (MEA) put power converters for commercial airplanes under increasing pressure to fulfill current harmonic distortion regulations as specified, for example, in DO-160G. Today, the implementation of filters is seen as an effective tool for dealing with harmonics, however, their increased weight and volume is not welcomed in the aerospace industry. This paper proposes a circuit, named Forced Commutation Series Capacitor rectifier (FCSC-rectifier), which is able to maintain low individual harmonic current levels without the need for filter components. The FCSC-rectifier includes a variable capacitive line reactance that interacts in a controlled manner with the inductive line impedance. The result is that the converter input current is nearly purely sinusoidal with a power factor of almost unity. The FCSC-rectifier is to be used for stand-alone variable-voltage, variable-frequency generation systems (VFG) and can therefore power the Full Authority Digital Electronic Control System (FADEC) in an MEA. This paper shows that the FCSC-rectifier can maintain a high power factor and acceptable current harmonic levels without the use of filters, despite large voltage and frequency variations. A full description of the circuit modes of operation is presented in this paper together with simulation results showing circuit performance characteristics over a range of voltages and frequencies. Results are experimentally verified using a 1kW test circuit.

Publication metadata

Author(s): Al-Mhana T, Pickert V, Atkinson DJ, Zahawi B

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Power Electronics

Year: 2019

Volume: 34

Issue: 1

Pages: 225-235

Print publication date: 01/01/2019

Online publication date: 15/03/2018

Acceptance date: 01/03/2018

Date deposited: 02/03/2018

ISSN (print): 0885-8993

ISSN (electronic): 1941-0107

Publisher: IEEE


DOI: 10.1109/TPEL.2018.2816305


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