Some of the more important projects the team has worked on are:

• Improvement of the frequency control of the Turkish Electric Power System for synchronous operation with UCTE –contractorESO EAD
• Analysis of the small-signal stability of the new and old part of NPP „Kozloduy” – contractorNPP „Kozloduy”
• Analysis of the power system stabilizers PSS-2A in AES-3C Maritza Iztok 1 EOOD power plant by a detailed mathematical model and proposal of new settings which will damp better the electromechanical oscillations in the generators – contractorAES-3C Maritza Iztok 1 EOOD
• Development of scientific methodology and software tool for determination of the appropriate settings of Automatic Voltage Regulators (AVR) and Power System Stabilizers (PSS), installed in Bulgarian power plants – contractorNEK EAD
• Functionality extension of the software tool NASAVR for calculation of the parameters of AVR and PSS – contractorNEK EAD
• Training of dispatchers from the National and the Territorial Dispatching Centers on the subject „Modern methods for modeling and analysis of electrical power systems transient processes in MATLAB environment“ – contractorESO EAD
• Representation of wind farm „Sveti Nikola”as equivalent synchronous generator for the purposes of calculation of short circuits – contractorAES GeoEnergy EOOD
• Representation of wind farm „Vetrokom”as equivalent synchronous generator for the purposes of calculation of short circuits
• Representation of PV farm „Samovodene”as equivalent synchronous generator for the purposes of calculation of short circuits
• Analysis of the operating states of the 110 kV network, owned by Mini Maritsa Iztok EAD, and of the supplying generators under conditions of compensation of reactive power – contractorMini Maritza Iztok EAD
• Study and analysis of the problem with increased reactive power of TRLK Vyrbitza after the change of the commercial metering point and proposition of measures for overcoming the problem – contractorBulgarian Air Traffic Services Authority
• Analysis of the conditions for automatic power supply backup of substation 223 ­– contractorNeftohim AD
• Analysis of the MV distribution network of NEK EAD, Dobrich region – contractorNEK EAD
• Forecasting and planning of electricity losses in low voltage distribution networks – contractorEnergoproekt
• Temporary scheme for power supply of the consumers “Airport Radar”, “Condition Main Hall”, “Main Control Room” and “Boilers” from 20 kV network and diesel-generator C 1250 – contractorBulgarian Air Traffic Services Authority
• Calculation of the overvoltage levels and currents for short circuits to ground in substations „Staro Orqhovo” and „Dolen Chiflik” – contractorNEK EAD
• Calculations of short circuits to ground in cable MV distribution network in substation “Shumen-1” and consultations on the methodology of calculation – contractorNEK EAD
• Preparation of expert assessment the state and allowable operating conditions of diesel-generator C 1250 – contractorBulgarian Air Traffic Services Authority
• Software for automated design of the mechanical part of 20 kV overhead lines – contractorNEK EAD
• Design of transformer substation 20/6/0,4 kV for emergency water supply from artificial lake “Conevo” of Varna city and region – contractor ViK OOD
• Design of the electrical part of the project “Expansion – new production buildings in УПИ III-“Dekaba”, кв.14, 26-ти МР, Varna” – contractor Mauer Locking Systems OOD
• Installation for grinding of coal and petroleum coke in plant “Vulkan” – contractorET Simenoni

Bureau for Engineering and Consultancy

Subject of activity

• Design:
  • Technological machines and production facilities in the field of mechanical engineering;
  • Technological gadgets and tooling;
• Computer simulations and engineering analyses including:
  • kinematic and dynamic analysis of machines and equipment;
  • strength analysis;
  • buckling analysis;
  • time-frequency analysis;
  • fatigue analysis;
• Consultancy:
  • Implementation and development of Statistical Quality Control Systems:
    • Statistical estimates of process capability;
    • Implementing Statistical Process Control in industry;
    • FMEA implementation in industry;
• Training in CAD & CAE:
  • Technical drafting with AutoCAD;
  • Product Design with Autodesk Inventor Professional;

Qualification

We have excellent experience and knowledge of our experts (Leading consultants), combined with the ambition of the Junior Associates, as well as their willingness to absorb specific knowledge in the field of computer design and the application of new methods and approaches in the implementation of the projects. Our leading consultants possess an academic experience and in-depth theoretical and practical knowledge of basic methods and approaches used for CAD CAM systems, and FEA.

Shipbuilding and marine equipment

Theoretical and experimental research related to the design, modernization and operation of ships and marine equipment:

Determination of resistance to movement of the ship;
Design of propellers;
Adjusting the geometry of the propeller to bring it in line with the condition of the housing and the main engine;
Experimental determination of the application of the center of mass of the ship by the method of rolling;
Design of new types of structural elements of ship systems and systems of marine equipment;
Performing hydraulic calculations of ship systems;
Design of ship devices.

Material Science and Technologies

Research work is directed to:

• Synthesize and study of metals and alloys in the foundry area;
• Investigation of the methods for cast parts production;
• Investigation of metals and alloys heat treatment;
• Investigation of metals and alloys microstructures and properties.

Applied work is directed to:

• Elaboration of the technological methods for cast parts production;
• Technology elaboration and production of cast parts by no alloyed and alloyed steels and cast irons, aluminium alloys, cupper alloys and so on;
• Technology elaboration and production of parts by cast irons with different graphite shape (laminar, spherical, vermicular) and different metal base (ferritic, pearlitic, martensitic, bainitic);
• Technology elaboration and realization of heat treatment;
• Microstructure, phase state and properties of the metals and alloys estimation;
• Expert opinions in the cases of materials changes, production quality, failure destruction reasons.

Technology estimation and parts production include: design and realization of the cast equipment, castings realization, mechanical treatment, heat treatment, dimension control, microstructure control, mechanical properties control, specific properties control.

Unconventional Technologies for Surface Heat Treatment

• Surface induction quenching of axes, shafts and gears with dimensions: diameter up to 400 mm, length up to 2500 mm and weight up to 250 kg.
• Gas flame surface hardening in deep of wheal and gear-wheel with diameters up to 1200 mm and height up to 400 mm.

Available equipment:

• universal installation for surface high-frequency quenching with machine generator – 100 kW, 8kHz
• universal installation for gas flame surface hardening with working gas of propane-butane (CH4) and oxygen

Automation systems

Design, implementation and maintenance of: Automation systems for various industries; Building automation; Remote cost accounting systems; Design and construction of systems for optimizing energy costs; Design and construction of external and internal electrical installations; Design and construction of information systems; Design and construction of security systems (security, video surveillance, fire alarm);
We work with controllers and other equipment of the following companies:

Special Electrical Machines and Apparatus

Design and introduction in production:

• Frictional coupling with electromagnet control;
• DC and AC motors with brakes, tachogenerators and position pick-up;
• Actuating motors controllers;
• Control systems of electrical motor drive;
• Generators, Transformers, Converters.

Diagnostics and repair:

• Vessel, aviation and car electrical equipment;
• High-revolutions comutator electrical motors;
• Special electrical apparatus and control systems.

Learning laboratory “Plastic Deformation”

Laboratory “Plastic deformation” service disciplines, “Metals Forming“, “Technology, machines and equipment for plastic deformation”, “Technology of finishing forming” and more. Equipped with machines for plastic deformation – crank presses, hydraulic press,   lab rolling Mill, teristor converter to heat rounder “strength – pressure – bending“ test materials ventricular electrical resistance furnaces, forces furnace, hot hydro-extrusion and hydro-plastic processing.

The laboratory design and carry out scientific – research related to manufacturing problems in the volume and sheet stamping, thermo processing, hydro-extrusion and hydro-plastic deformation, leadership of students and graduates.

SPL “Casting Equipment and Technology”

The laboratory has facilities, systems and equipment for the education process in the following subjects:

Technology of Casting Production (TCP)Casting Production Processes (CPP)
Materials Technology (MT)
Manufacturing Technology (MT) – for Engineering Design
Art Casting (AC) – for Engineering Design
The laboratory is focused on the following areas:
– methods and techniques for obtaining and complicated relief walled castings of ferrous and non-ferrous alloys development of new and improvement of existing
– methods and technology for molding and castingTopic:
– Obtain accurate casting nonferrous alloys
– Develop technologies and obtain details high iron collars, alloy iron, wear-resistant special steel
– Expertise of metallic materials making metal art sculptures
– Contacts – with established companies in the field of machine-building, chemical productions and others in the field

SPL “Thermal and repair-restoration technologies”

Areas of research and development (R&D) activities:

– Treatment of materials with concentrated energy flows, study of the structure and properties of engineering materials after influence with a laser, plasma, electron beam
– Creating and testing the cooling capacity of new media for hardening in a thermal cycling effects
– Research opportunities for welding of special steels and nonferrous alloys, development of technology for vacuum, gas flame, furnace and induction brazing soft and hard solder
– Development of technologies for the complete manufacturing of parts and assemblies of textile machinery, footwear and sewing machines
– Development of technologies of strengthening and restoration of operational qualities of details of transport and agricultural machinery
– Development of technologies for the complete manufacturing of parts and assemblies of textile machinery, footwear and sewing machines
– Developing new designs and technologies for metal products for architectural and interior design
– Expert evaluation of operational, technological, situational and structural metalwork solutions in the energy, chemical and petrochemical industry, shipbuilding and transport engineering, construction

Art Casting

Design, modeling and development of artistic castings (metal sculpture) of ferrous alloys.

Gallery:

Learning Laboratory Machines and Apparatus for the Chemical Industry

Learning Laboratory is equipped with machines and apparatus systems and stands to pursue studies in the following subjects:

– Facilities in the oil and gas industry

– Technology of Chemical Engineering
– Diagnostics and reliability of chemical equipment
– Technology of repair of chemical equipment

The teaching is done in the laboratory by:
– Stands on a rotating drum furnace 2 and 4 supports
– Stand on the machine with mechanical stirring element
– Stand for determining the thermal and mechanical stresses in the housing apparatus
Laboratory work is focused on the following areas:
– Reconstruction and repair of chemical equipment
– Non-destructive testing of machines and equipment for the oil and gas industry