WB Electronics (Poland)

Due to the heavy weight, large volume, and environmental concerns associated with traditional power frequency transformers at medium voltage and higher levels, solid-state transformers (SSTs) have become a significant research focus. Although SSTs remain relatively costly, they are well suited for applications in medium voltage power grids and DC loads, such as renewable energy integration, data center power supply, and electric vehicle charging. This paper proposes a power electronic structure based on a single-stage SST, designed for electric vehicle fast charging stations (EV-FCS). Compared to traditional SSTs, the proposed structure eliminates the need for additional isolated DC/DC converters by implementing a balancing circuit, which can significantly reduce the cost and improve the efficiency. The simulation results demonstrate the feasibility of the proposed topology. Furthermore, a cost analysis indicates that the total cost of the charging station is reduced compared to conventional SSTbased solutions. Finally, a down-scale experimental prototype was built to verify the basic principle.

For two decades, AREX Sp. z o.o. (Gdynia, Poland), belonging to WB Group (Warsaw, Poland), has been dealing with special-purpose production, in particular mechatronics, and its solutions are used in electromechanical accessories for 155 mm KRAB gun-howitzers and 120 mm RAK self-propelled wheeled gun-mortars. The operations of WB Group on international markets has given a boost to its further development. The solutions of the remotely controlled weapon platform presented in this paper can be adapted to weapons with ammunition fed from the left or right side, owing to the self-diagnostics and verification system as well as the modular design. The intention of the designers was to create functional and intuitive equipment that allows the operator to focus on firing operations. The remotely controlled weapon platform is also equipped with covering capacity, such as smoke grenades, and is also electrically operated, can be operated manually in emergencies, is intended for installation on various combat vehicles and is remotely controlled by the operator remaining inside the vehicle compartment, which ensures full armoured protection against enemy direct fire. Remote control is based on two operating components a fire control unit and a control grip. Additionally the system is capable of remote weapon loading, weapon cocking, and firing. Tracking and remote controlling capabilities of the integrated weapon platform ensure high probability of hitting stationary and moving targets during the first round, and the platform can be operated manually as required.

The C4I (Command, Control, Communications, Computers and Intelligence) system is the integral part of soldier’s Individual Combat System. This subsystem establishes new standards by providing soldiers with supporting information and therefore improving their knowledge. For that reason, the C4I system integrates all radio, electronic and optoelectronic & IT components, which are a part of the soldiers equipment. The C4I system ensures exchange of data, imagery, and audio between its users and elements of its environment. For the above functionality to be implemented, the C4I subsystem needs a device which will integrate the above-mentioned functionality in its configuration. The Modular Integrator is this kind of device. This paper describes the design and the functionality of the Modular Integrator used for soldier’s C4I system management. The paper focuses on the design of the device and on the set of functions it can perform in the C4I system. An innovative concept, involving integration of three separate devices in a single enclosure, i.e. a personal radio, a portable digital assistant and a mobile phone with a power supply system allows the Modular Integrator to be referred to as a device with “functional multiformity”. A key aspect of the project implementation was also the adaptation of the device to psychological & physical attributes of its future users. This adaptation was accomplished through evaluation of the Modular Integrator in terms of ergonomics, technical aesthetics, anthropometrics and customization, user interaction, pressure force, thermal comfort and lateralization. This “3-in-1” researched and tested solution, developed to the 9th technology readiness level, has no match on national and on international markets.

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Abstract This article presents the procedure of identification radar emitter sources with the trace distinctive features of original signal with the use of fractal features. It is a specific kind of identification called Specific Emitter Identification, where as a result of using transformations, which change measure points, a transformation attractor was received. The use of linear regression and the Lagrange polynomial interpolation resulted in the estimation of the measurement function. The method analysing properties of the measurement function which has been suggested by the authors caused the extraction of two additional distinctive features. These features extended the vector of basic radar signals’ parameters. The extended vector of radar signals’ features made it possible to identify the copy of radar emitter source.