Multiphase pulse transducer for aircraft anti-ice vibrator feeding

Аuthors

Reznikov S. B.^1*, Averin S. V.^2**, Kharchenko I. A.^3***, Tret'yak V. I.^4****, Konyakhin S. F.^4****

1. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
2. ,
3. Central Research and Development Testing Institute of the Engineering Troops of the Ministry of Defense of the Russian Federation, Nakhabino-2, Moscow region, 143432, Russia
4. Aeroelektromash, 12, B. Novodmitrovskaya str., Moscow, 127015, Russia

*e-mail: rezn41@mail.ru
**e-mail: acb@mai.ru
***e-mail: igor8p5@yandex.ru
****e-mail: aeroel@mail.ru

Abstract

New circuit approach to aircraft on-board and airfield electro-pulse anti-ice systems with high reliability, electric power efficiency, assembly processability as well as electromagnetic compatibility is examined.

Anti-ice systems represent a key facility for flight security and aircraft installations normal operation. They play an important part providing successful operation of following. They provide successful operation of the following on-board & ground-based equipment: air-field radar, light signal, high voltage, wind-driven, antenna feeder, gas-piping and etc. (especially for facilities that are operated out-door under winter conditions or in the north regions).

Electro-pulse anti-ice system (EP AIS) represents a certain variety of mechanical anti-ice setup. It provides repetitive pulse impacts in a protected cover. At present the electro-pulse anti-ice systems based on remote contactless impact on the cover is used in aeronautics. They induce pulse eddy currents by means of dedicated EM inductors. These eddy currents induced in certain cover surface areas interact with magnetic field of the latter and produce the pulse vibrations of the cover, and, split off of an ice layer. The debris carried away by the air stream.

The main EP AIS advantage is its low power consumption — ten and even hundred times less than other systems energy consumption.

The general shortcomings of such systems are as follows: low system assembly processability due to bulk inductors for various parts of the cover (their area of action is limited by surface junctions and device reinforcing elements), residual ice formation under relatively large exposed area; the necessity of pulse power boost in case of higher rigidity of construction; structural complexity and its low reliability for composites.

There is a reasonable way to reject the induction vortex interaction between vibrator inductor coil and the cover: the usage of the pair of cores — fixid and movable one. The latter is fixed on the spring and is supplied with a percussion lug for knocking the cover (including materials with low electro-conductivity -composite via metallic substitutes).

The power stage of the secondary pulse power source for anti-ice vibrators with primary supply from low- voltage DC mains network (27 V) is presented in this article.

The circuit represents a reversible (bidirectional) step-down / step-up pulse converter with reactor integrator and a damper-snabber non-dissipating circuit for modulator switch «soft» commutation.

The power taken from the power source is relatively small due to energy batch recuperation from reactor integrator back to power source and to input C- integrator as well as due to commutation loss reduction by soft key switching. In addition the switch commutatin overstress and inversely-diode overcurrent are eliminated. Moreover, the HF commutation noise emission is also reduced.

The new circuit solution examined in this article is intended for on-board and airfield electro-pulse anti- ice system design. It provides the equipment functional capabilities enhancement due to bidirectional energy conversion, particularly its recuperation, as well as efficiency and reliability enhancement, EM compatibility improvement thanks to switching overstress and inversely-diode overcurrent elimination as well as switching heat loss

The presented circuit solution is protected by Russian Federation priority. The research presents interest for a wide circle of specialists in the field of aircraft electrical equipment design as well as anti-ice equipment for ships and stationary installations, used for instance in airfield radar and lighting equipment in the north.

Keywords:

secondary pulse power supply source, anti-ice system, reversible impulse converter, damper- snabber non-scattering circuit, electro-mechanical vibrator

References

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