Ouput Voltage Stabilization Process Simulation in Generator with Hybrid Excitation at Variable Drive Speed

Ostroverkhov, Мykola; Chumack, Vadim; Monakhov, Eugene

doi:10.1109/ukrcon.2019.8879781

Cited by 27 publications

(13 citation statements)

References 16 publications

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“…Many companies at the design stage use various programs to model certain physical processes. At these stages of system design and modeling, it is necessary to keep in mind the variability of parameters and their physical properties [23] and [24].…”

Section: Methods Results and Discussmentioning

confidence: 99%

Computer modeling of electromechanical system of two-speed elevator

Nazarova¹,

Osadchyy²,

Shulzhenko³

2022

HAIT

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Today, elevator production in Ukraine needs innovative solutions and changes, because most of the equipment in operation was built and installed in the 70-80s of the last century. Due to the high cost of new frequency-controlled winches and the complexity of maintenance, the search for modernization and improvement of existing elevator winches remains an alternative. No less important stage of operation is diagnostics. Timely detection of damages and forecasting of future failures allow to provide high-quality work during all term of operation, and also to reduce expenses of budgetary funds for difficult repairs. Computer simulation plays an important role in the modern world both during the design of a new elevator and during operation. Thanks to fairly simple and clear programs, it is possible to reproduce not only the standard modes of operation of the mechanisms, but also to perform calculations of future possible faults. The use of visualization facilitates the perception of information for operators, engineers and other users involved. The paper presents a computer model of a two-speed elevator with an induction motor and a reduction winch. The research used Matlab / Simulink software, which is intuitive to use and, in the full sense of the word, informative. The built model of the elevator has feedback on the calculated load of the cabin. The latter is determined by the transients during engine start-up and affects the positioning accuracy at a stop. The dependences of the influence of the degree of cab loading on the positioning accuracy are found. In the second stage, the supply voltage parameter is added. A change in this parameter within ± 10% affected the previous calculations of the loading degree and deteriorated the accuracy by almost three times. At the same time, most indicators (75%) meet the requirements of international standards EN 81-20: 2014 with positioning accuracy in the range of ± 10 mm. In further studies it is planned to use the obtained results to reduce the sensitivity of the algorithm for calculating the loading degree of the cabin to change the supply voltage and ensure the required positioning accuracy in the entire load range of the cabin when changing the supply voltage ± 10 %.

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Section: Methods Results and Discussmentioning

confidence: 99%

Computer modeling of electromechanical system of two-speed elevator

Nazarova¹,

Osadchyy²,

Shulzhenko³

2022

HAIT

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“…The generator magnetic flux is controlled by changing the field winding current. Special attention should be paid to HESG designs with axial magnetic flux [2,3], which provide low synchronous rotation speeds. It allows to get a direct (gearless) coupling between the wind wheel and the generator.…”

Section: Literature Reviewmentioning

confidence: 99%

Information supply of the power control system of the synchronous generator of the autonomous wind unit

Ostroverkhov¹,

Chumack²,

Monakhov³

et al. 2021

HAIT

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This paper deals with information supply of automatic maximum power control system of synchronous hybrid excited genera-tor for the autonomous wind unit. The power supply system based on an autonomous wind turbine consists of an electric generator, a battery charging controller, a battery pack and an inverter, which provides the required frequency and valueof the consumer's supply voltage.Three phase permanent magnet synchronous generator that have high technical and economic indicators are most widely used as electric generator of autonomous wind turbines.The main disadvantage of these generators is the lack of effectivemethods of magnetic flux control, limiting the optimization of the energy balance of the wind turbine.The paper discusses the application of synchronous generator with hybrid excitation system that consists of permanent magnets and additional field excitation winding lo-cated on the stator. Mathematical model of a hybrid excited synchronous generator is presented. Also,an output maximum power control system in a case of wind speed change by varying field excitation current is developed. Control system is developed based on concept of reverse task of dynamics in combination with minimization of local functionals of instantaneous values of energies.In the basics of the control method is put an idea of the reversibility of the Lyapunov direct method for the stability analysis.Obtained con-trol law provides thesystem stability inwhole, which allows solving control tasks of interrelated objects via mathematical models of local loops. Control law also provides low sensitiveness to parametric disturbances and gives dynamic decomposition of interrelated non linear system that ensures its practical implementation. The study of the proposed power control system based on parameters of hybrid excited synchronous generator experimental sample has been carried out. The graphs of transient process of armature power, voltage and current in a case of wind speed change from 3 to 8 m/s were obtained, as well as in a case of active resistance load change. The results of study showed high efficiency of power control of a wind turbine with hybrid excited synchronous generator

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“…The proposed solution allows for very precise control of the magnetic flux, which allows to obtain the set value of the output voltage in cases where the load or speed changes, or both. Very interesting designs of hybrid excited axial flux machines are also described in various papers [32][33][34][35].…”

Section: Axial Flux Machinesmentioning

confidence: 99%

Modern Hybrid Excited Electric Machines

et al. 2020

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The paper deals with the overview of different designs of hybrid excited electrical machines, i.e., those with conventional permanent magnets excitation and additional DC-powered electromagnetic systems in the excitation circuit. The paper presents the most common topologies for this type of machines found in the literature—they were divided according to their electrical, mechanical and thermal properties. Against this background, the designs of hybrid excited machines that were the subject of scientific research of the authors are presented.

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Ouput Voltage Stabilization Process Simulation in Generator with Hybrid Excitation at Variable Drive Speed

Cited by 27 publications

References 16 publications

Computer modeling of electromechanical system of two-speed elevator

Computer modeling of electromechanical system of two-speed elevator

Information supply of the power control system of the synchronous generator of the autonomous wind unit

Modern Hybrid Excited Electric Machines

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