Multiphase cycloconverters with active power factor correction to ensure electromagnetic compatibility power supply systems for fully-electric aircraft

Аuthors

Reznikov S. B.^*, Bocharov V. V.^**, Kornilov A. B.^***

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: rezn41@mail.ru
**e-mail: e.bocharowa@yandex.ru
***e-mail: ab_kornilov@mail.ru

Abstract

The authors propose a new circuit solution for the design of multi-phase reversible frequency inverters for aviation applications with double-acting direct connection of cyclic converters with active correction of power factor for electromagnetic compatibility with power supply system of an aircraft owing to the high quality of current being consumed. It is assigned for use in the secondary power supplies of prospective aircraft with power-intensive, in particular, fully-electrified equipment.
Electronic frequency converters with direct connection (cyclic converters) carry out single conversion of electric power in both directions. They are applied in aviation, and other onboard transport autonomous power supply systems, but still have several drawbacks.
The authors propose a principally new circuit solution for creating an aviation cyclic converter free of the drawbacks. The main difference from similar (multiphase) circuits is that a function of the pulse modulator for power factor correction was added. The proposed circuit solution for the design of onboard aviation cyclic converters with active power factor correction and high quality input current (i.e. with good electromagnetic compatibility) allows:

• reduction ofthe smoothing output filter size;
• mitigation of requirements both for the value of transient reactance, and calculated power of aircraft onboard generator;
•  essential increase of the power consumption factor compared to that in conventional thyristor cyclic converters;
•  reduction of the voltage loss in the input wire connections and lowering their weight;
•  relatively simple realization of switching synchronization with angular position of the rotor of electrically-driven motors without special position sensors.

The proposed converter is designed for use in aviation onboard power supply systems and can also be used in marine, hybrid electric motor cars and other types of vehicles, as well as in stationary autonomous power supply systems, such as wind and fuel-energy plants, systems with controlled brushless electric drives (eg, submersible pump), reactive power compensators, etc.

Keywords:

cycloconverter; inverter; converter; PFC; power supply

References

1. Gruzkov S.A., Morozov V.A., Nagaitsev V.I. Elektrooborudovanie letatel’nykh apparatov (Power supply system of aircraft), Moscow, MEI, 2005, 568 p.
2. Gyugyi L., Pelly B.R. Static power frequency charges, Theory, Perfomance and Application, Moscow, Energoatomizdat, 1983, 400 p.
3. Reznikov S.B., Bocharov V.V., Kirillov V.V. Postnikov V.A. Elektoroenergeticheskaya i elektromagnitnaya sovmestimost’ transportnogo elektrooborudovaniya s vysokovol’tnymi tsepyami pitaniya (Electric power and electromagnetic compatibility of electric vehicle with high-voltage power supply circuits), Moscow, MAI-PRINT, 2010, 512 p.

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