PhD student

Dmitry Ushakov

Ushakov

PhD student

Thesis title:  “Converters of forming quasi sinusoidal voltage based on double series”

Annotation: The work deals with the problem of forming kvazisynusoyidalnyh voltages in electrical power converters that are used as secondary power sources and spectral analysis by double rows. Much attention is given to research different modulation techniques to improve the quality of electricity.

Thesis supervisor: Zhuikov V. Y.

Year of admission : 2013

 

Ievgenii Dziuba

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PhD student

Thesis title:  «Electro-magnetic and thermal processes in electrosurgery invertors»

Annotation: This paper review a thermal and electro-magnetic model of live tissue building, development control algorithms of electrosurgery invertors to ensure optimal connection of tissues. Also described an experiments that confirm a modelling results.

Thesis supervisor: Todorenko V.A.

Year of admission : 2013

 

 

Roman Baranyuk 

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PhD student

Thesis title:  «Thermal protection systems, electric power converters»

Annotation: This work is making thermal component in existing methods of calculating the transitional process and set of converters with the construction and electrothermal solving differential equations systems, electro-analysis calculations for example Lowering SHIP, calculation and emergency operating modes of the thermal protection device. Creating a model in Simulink to their libraries semiconductor components written in C ++, based on the decision of theoretical methods.

Thesis supervisor: Todorenko V.A.

Year of admission : 2013

 

Victor Didenko 
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PhD student

Thesis title:  «Management of semiconductor converters hydraulic system of continuous casting machines»

Annotation: The exact parameters of the vibrational motion support caster mold is very important in ensuring high quality continuously cast billets, stability casting process, reduce material costs. The oscillatory movement of the mold is provided a hydraulic drive system, which included existing semiconductor converters that provide hydraulic control valve. Rorobka control algorithms semiconductor converters as elements of complex systems aimed to improve the accuracy of the support given parameters of movement by the action of the facility management of external and parametric disturbances.

Thesis supervisor: Bondarenko O.F.

Year of admission : 2013

 

Andrii Matiiko

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PhD student

Thesis title:  «Chaotic processes in converters DC»

Annotation: Chaotic processes in converters DC – study processes occurring in the converter DC voltage converter in the investigation of high gain feedback signal, precision construction system.

Thesis supervisor: Zhuikov V. Ya.

Year of admission : 2014

 

 

Ivan Boiko

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PhD student

Thesis title:  «Dynamic tariffication system with diesel generator»

Annotation: With the development of Smart Grid technology widespread local systems that operate on the principles of distributed generation, including power generation systems based on diesel generator. Typically, these systems have limited power and limited activity. Regulation of electricity prices in local systems currently is not dynamic, and based on the value set beforehand. For a fixed hourly tariff prices, availability of a large transients in the base period of time causes significant deviation from the actual tariff rates established that leads either to a lack of, or excess funds in the system. The work is dedicated to creating a flexible dynamic charging, which will provide the balance of funds between the consumer and the producer of electricity.

Thesis supervisor: Zhuikov V. Y.

Year of admission : 2015

Liubov Klepach

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PhD student

Thesis title:  «Managing power consumption on cost criteria in MicroGrid»

Annotation: Choosing an alternative source for network MicroGrid object depends on the purpose that relates to the system. To ensure maximum profit from the use of the system power supply choice during planning should be based on cost criteria, which will select the best option in terms of total revenue from its use. An important factor for maximizing profits from the operation of the system is guaranteed power algorithms and principles of management systems converters power supplies. The work is dedicated to the creation of guidelines for electricity market based on alternative sources of electricity.

Thesis supervisor: Tereshchenko T. O.

Year of admission : 2016

 

Pavlo Buchek

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PhD student

Thesis title:  «The system of forecasting energy fotobatareyi in SmartGrid»

Annotation: In connection with the annual increase in the capacity of alternative energy sources in many developed countries at present this index is ten percent of the total power mains. Given the volatile and unpredictable nature of alternative energy, including PV, there is a need in the prediction of the electricity supply. This contributes to the stability of power supply loads of distributed generation, increasing the allowable power consumption capacity of alternative energy sources and improving the quality of solar power network through timely compensation power change additional energy sources. That is why the study on improving forecasting system of PV energy is important.

Thesis supervisor: Yamnenko Y. S.

Year of admission : 2016

Ivan Lipinskyi

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PhD student

Thesis title:  «Diagnosing of systems with semiconductor converters»

Annotation: Modern electronic and electrical systems consist of a set of functionally finished blocks and subsystems, manufactured as a separate unit and do not provide access to internal components. The reliability of such systems depends on the state of their components, failure of which leads or inability to perform a given function or to deterioration of work.

Given the block principle of building of modern systems,  its diagnostics is based on some indirect data, such as current and voltage at the input and output of structural units of the system. The task is complicated by the existence of mutual influence and indissoluble functional relationships between the blocks, which requires the use of methods of diagnosis, which would take into account the structural features of the system.

That’s why, an important task is to develop methods for the interpretation of diagnostic data and performance status classification systems with semiconductor converters.

Thesis supervisor:  Khyzhniak Т.A.

Year of admission : 2016

 

Dmitriy Kuzin 

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PhD student

Thesis title:  «Improving the energy performance of transformers and harmonic modular structure»

Annotation: The modular principle is widely used to build converters of various types, including multilevel inverters, rectifiers, pulse converters DC. The advantage of the modular structure of the transducers is the union of a number of identical cells converting relatively low power to achieve high values ​​of current (voltage). The modular structure of converters provides improved waveform current or voltage, increased flexibility restructuring converter. Provides a high level of unification of design, increases reliability of the converter by reserving cells.

         The main directions of further improvement of modular converters are:

  1. Minimizing energy losses on the elements of the transducer and energy efficiency of the converter as  a whole.
  2. The reduction in THD plural inverters by developing principles of construction of power circuits           multilevel inverters based on spectral orthogonal transformation of discrete functions with m     argument.

Thesis supervisor: Tereshchenko T. O.

Year of admission : 2016