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Adaptive control of the interior permanent magnet synchronous motors

(Igor Sikorsky Kyiv Polytechnic Institute, 2020) Rodkin, Dmytro Illich; Peresada, Sergiy

Thesis contains: pages – 117, drawings – 38, tables – 23. The goal of the of the thesis lies in development of the control methods of the IPMSM with the purpose of its research and improvement of efficiency and performance of the electromechanical system. In this thesis, analytical review of the inductance determination methods for the IPMSM is presented. After that two tests for inductance determination of the interior permanent magnet synchronous motors are proposed, analyzed and experimentally verified. Four methods are proposed to use to obtain static and dynamic inductances from the tests data. Speed and position control algorithms are derived basing on the non saturated model of the motor and its effectiveness was researched by means of experiment and simulation for small saturated motors. After that position control algorithm with adaptation to the mechanical parameters is designed and tested via simulation. Stability is proved using the second Lyapunov method. Derived algorithms provide asymptotic tracking of the controlled coordinates, and decoupling of the direct current component and mechanic coordinate control subsystems.

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Automatic control system of the direct photolithography writer with an autofocus algorithm

(Igor Sikorsky Kyiv Polytechnic Institute, 2023) Isyp, Mykhailo Oleksandrovych; Peresada, Sergiy

The thesis contains 95 pages, of them 75 – the main text, 45 figures, and 8 tables. The main purpose of the project is to develop an automatic focus control system for the direct lithography writing tool. Motivation lies in making such instrumentation more available for research laboratories. In the beginning, an analytical review of the current state microlithography technologies is made. Consequently, direct lithography writing is selected as the most effective method for microfabrication in the research area. Then, the main requirements for lithographic processes of direct writer systems are described, and the tool’s design is proposed. The direct lithography writer system is developed based on an open-source microscopy project, namely the OpenFlexure Microscope. The design's mechanical, optical, electrical, and computation subsystems are described, and modifications required for the lithography are applied. In addition, the device's mechanical properties are determined by calculations and measurements. The autofocus control problem is formulated following the proposed direct lithography writer design. The system with the 28BYJ-48 stepper motor is investigated by simulating the focus control model in MatLab/Simulink. For better performance, the RSF-8B-30 servomotor is proposed as an alternative, succeeding in accuracy and speed increasing for the focus control.

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Development of amlodipine and enalapril combined tablets based on quality by design and artificial neural network for confirming of qualitative composition

(Bulgarian Pharmaceutical Scientific Society and Pensoft Publishers, 2022-08) Behei, Nataliia; Tryhubchak, Oksana; Pryymak, Bogdan

Using approaches of Quality by design, namely dispersion analysis, random balance method, regression analysis and neural networks, the composition and technology tablets based on amlodipine besylate and enalapril maleate have been developed. Using dispersion analysis was determined the effect of 30 excipients on 10 pharmaco-technological parameters of tablets. With the help of the desirability function, the leaders of the excipients were selected from 6 functional groups. It was confirmed that the composition with the best pharmaco-technological parameters, determined by using statistical methods, coincides with the results studies the synthesized Feed-forward neural network. The quantities of preferable excipients at 3 levels were identified by the random balance method. The relationship between the studied factors and the quality of the tablets was described by regression equations. Based on the placement of equal output lines, the optimal composition of amlodipine tablets with enalapril was established.

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Direct robust active-reactive power control of a doubly-fed induction machine

(Кременчугский государственный политехнический университет, 2001) Peresada, Sergei; Korol, Serhii

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Direct vector control of induction motors based on rotor resistance-invariant rotor flux observer

(Institute of Electrical and Electronics Engineers, 2018-11) Bozhko, Serhiy; Kovbasa, Serhii; Nikonenko, Yevhen; Peresada, Sergei

A novel speed-flux tracking controller for induction motors has been developed and experimentally verified. Direct rotor flux field oriented controller is designed for current-fed induction motor model on the base of full order hybrid continuous time-sliding mode flux observer. Controller guarantees local asymptotic speed-flux tracking and asymptotic direct field-orientation under condition of unknown constant load torque. The flux subsystem is invariant with respect to limited rotor resistance variations due to special structure of the flux observer. The efficiency of the proposed solution is confirmed by the results of experimental studies, which demonstrate the improved robustness properties in all motor operating conditions including nearby zero speeds.

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Dynamic performances of the shunt active power filter control system

(Одеський національний політехнічний університет, 2021) Peresada, Sergei; Kovbasa, Serhii; Zaichenko, Yurii

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Ein fortgeschrittenes Regelungssystem für Polypropylen Vliesstoffherstellung

(Technische Universität, 2007) Khalimovskyy, Olexyi; Kiselychnyk, Oleh; Pryymak, Bohdan

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Electric vehicle drivetrain based on permanent magnet synchronous motor with loss minimization control algorithm

(Igor Sikorsky Kyiv Polytechnic Institute, 2020) Soroka, Pavlo; Shapova, Ivan

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Experimental evaluation of the high performance vector controlled doubly-fed induction machine with matrix converter

(Institute of electrodynamics National Academy of Sciences of Ukraine, 2002) Chekhet, Eduard; Sobolev, Vladimir; Peresada, Sergei; Shapoval, Ivan

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Extremal electromechanical control system of water supply pumps connected in series

(Кременчуцький державний політехнічний університет імені Михайла Остроградського, 2010) Popovich, Mykola; Kiselychnyk, Oleh; Buryan, Serhii

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High performance electromechanical energy conversion using matrix converter. Part 2: Vector control of induction motor

(НТУ “ХПИ”, 2001) Peresada, Sergei; Kovbasa, Serhii; Chekhet, Eduard; Shapoval, Ivan

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Improved interactive energy saving control algorithms of water supply pump based on head measurement

(ЕКОінформ, 2009) Kiselychnyk, Oleh; Buryan, Serhii; Bodson, Marc; Werner, Herbert

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Indirect field-oriented torque control of induction motors with maximum torque per ampere ratio

(Кременчуцький державний політехнічний університет імені М. Остроградського, 2010) Peresada, Sergei; Kovbasa, Serhii; Dymko, Serhii

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Induction motor based electromechanical systems with inverter dead time compensation

(КПІ ім. Ігоря Сікорського, 2020) Отрошко, Андрій Олександрович; Ковбаса, Сергій Миколайович

Thesis contains: pages – 138, drawings – 92, tables – 7, appendixes - 7. The thesis goal is research of effectiveness of dead-time compensation methods in voltage source inverters for induction motor drives. Dead-time effect aftermaths were observed and compensation strategies for mitigation of the effect were derived. Valid inverter model considering dead-time caused disturbance was developed and implemented in simulation program of adjustable speed drive based on V/f and field-oriented control of induction motor. Dead time compensation methods effectiveness was studied by means of simulations. Software for control of voltage source inverter utilizing space vector PWM technique with dead-time compensation algorithms was developed.

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Induction motors torque control with torque per ampere ratio maximization

(Magdeburg University, 2013-09-25) Dymko, Serhii; Leidhold, Roberto; Peresada, Sergei

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Interactive energy saving automatic control of water supply pump

(International Society for Science and Engineering, 2007) Kiselychnyk, Oleh; Koláčný, Josef; Buryan, Serhii; Ondrák, Tomáš

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Lyapunov function in the hyper complex phase space

(2021) Voliansky, Roman; Volianska, Nina; Kuznetsov, Valeriy; Sadovoi, Aleksandr; Kuznetsov, Vitaliy; Kuznetsova, Yevheniia; Ostapchuk, Oleksandr

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Nonlinear control of voltage source AC-DC and DC-DC boost converters

(National Technical University "Kharkiv Polytechnic Institute", 2017-10) Peresada, Sergey; Kovbasa, Serhii; Pristupa, Dmytro; Pushnitsyn, Dmytro; Nikonenko, Yevhen