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    Wyświetlanie 1-8 z 8
    Tytuł:
    PMSM servo-drive fed by SiC MOSFETs based VSI
    Autorzy:
    Tarczewski, T.
    Skiwski, M.
    Grzesiak, L. M.
    Zieliński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1193673.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    PMSM
    servo-drive
    SiC MOSFET
    FOC control
    state feedback control
    Opis:
    The article presents modern PMSM servo-drive with SiC MOSFETs power devices and microprocessor with ARM Cortex core. The high switching frequency is obtained due to the application of high efficient power switching components and powerful microprocessor. It allows to achieve good dynamical properties of current control loop, proper disturbance compensation and silent operation of servo-drive. Experimental tests results obtained for two different control schemes (i.e., cascade control structure and state feedback position control) are presented.
    Źródło:
    Power Electronics and Drives; 2018, 3, 38; 35-45
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of self-excited synchronous generator with inverter as DC grid voltage source
    Autorzy:
    Kozak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/378011.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    self-excited generator
    FOC control
    DC grid
    controlled voltage source
    Opis:
    Self-excited generators are the most popular voltage sources installed onboard of modern ships. Because of fuel savings on some specialized vessels (PSV, cable layers etc.) varying revolutions drives are used and this trend seems to increase. Very interesting issue is use of such type of alternator working with inverter acting as rectifier in DC grid system. As the control method most suitable to use is modified field oriented control known from induction machines. This control method involves decoupling of currents and control voltages to flux and torque components and keeping them in optimal (orthogonal) condition. Theoretical background of inverter and synchronous generator adopted FOC control method along with experimental results obtained in laboratory of such system were presented.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2018, 95; 209-220
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Initial Excitation Issues of Synchronous Generator with VSI Inverter in Varying Rotational Speed Operation
    Autorzy:
    Kozak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2064987.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    synchronous generator
    initial excitation
    FOC control
    voltage source inverter
    synchronization
    Opis:
    Synchronous self-excited generators still are and probably will be the most popular 3-phase alternators installed in inland power stations so onboard of seagoing ships. Because of fuel savings and environmental restrictions Diesel, dual-fuel and gas propulsion engines for alternators of wide-range varying revolutions drives are increasingly used. There must be efficient way of creating 3-phase voltages of desired constant parameters ensured when generator produces variable amplitudes and frequencies of voltages because of changing rotational speed. As the control method modified field oriented control widely used with squirrel cage induction machines was chosen. This control method involves decoupling of currents and control voltages to flux and torque components and keeping them in optimal (orthogonal) condition. In order to obtain proper excitation and operation of such generator several factors have to be taken into account. Nonlinear dependence of voltage generated from rotational speed of self-excited synchronous generator is one of the factors that affects initial excitation process thus specific control method while generator startup. Theoretical background of synchronous generator excitation and voltage source inverter adopted FOC control method along with experimental results obtained in laboratory test bench of 5,5 kW generator and conclusions were presented.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 377--383
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative study between propulsion control system failures of an electrical vehicle piloted by FOC and by DTC using dual-induction-motors structure
    Autorzy:
    Yahia Cherif, Salah
    Benoudjit, Djamel
    Nait-Said, Mohamed Said
    Nait-Said, Nasreddine
    Powiązania:
    https://bibliotekanauki.pl/articles/327784.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    electrical vehicle
    EV
    propulsion control system
    PCS
    flux oriented control
    FOC
    direct torque control
    DTC
    speed sensor offset
    zero-feedback faults
    pojazd elektryczny
    napęd
    układ sterowania
    awaria
    Opis:
    This paper deals with a comparative study using numerical simulations between the failures effect caused by the speed sensor faults for a propulsion control system (PCS) of an electrical vehicle (EV) using dualinduction motors structure. The PCS strategies are achieved on two types of controls where the first one is done from a flux-oriented control (FOC) and the second one is conducted from a direct torque control (DTC). For an electric vehicle, we will often guarantee service continuity, in spite of the occurred faults such as an offset fault in speed sensor and a zero-feedback sensor speed fault which both are essentially needed in the structure of the PCS-EV. The occurred fault cited above might influence one of the dual induction motors which could be conducted an unbalance in the dual used motors and from which the control of the vehicle might be also lost. The results of the realized numerical simulations on the EV conducted by the PCS demonstrate clearly the impact of the so-called-fault. Thereafter, we can also appreciate the robustness using each used control propulsion system in despite of the occurred speed sensor fault.
    Źródło:
    Diagnostyka; 2020, 21, 3; 41-47
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic performance of estimator-based speed sensorless control of induction machines using extended and unscented Kalman filters
    Autorzy:
    Horváth, K.
    Kuslits, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1193590.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    induction machine
    speed sensorless control
    field-oriented control
    FOC
    non-linear state estimation
    load torque estimation
    extended Kalman filter
    EKF
    unscented Kalman filter
    UKF
    Opis:
    This paper presents an estimator-based speed sensorless field-oriented control (FOC) method for induction machines, where the state estimator is based on a self-contained, non-linear model. This model characterises both the electrical and the mechanical behaviours of the machine and describes them with seven state variables. The state variables are estimated from the measured stator currents and from the known stator voltages by using an estimator algorithm. An important aspect is that one of the state variables is the load torque and, hence, it is also estimated by the estimator. Using this feature, the applied estimator-based speed sensorless control algorithm may be operated adequately besides varying load torque. In this work, two different variants of the control algorithm are developed based on the extended and the unscented Kalman filters (EKF, UKF) as state estimators. The dynamic performance of these variants is tested and compared using experiments and simulations. Results show that the variants have comparable performance in general, but the UKF-based control provides better performance if a stochastically varying load disturbance is present.
    Źródło:
    Power Electronics and Drives; 2018, 3, 38; 129-144
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potentials of e-Navigation – Enhanced Support for Collision Avoidance
    Autorzy:
    Baldauf, M.
    Benedict, K.
    Krüger, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/116902.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    safety at sea
    Collision Avoidance
    e-Navigation, Maritime Cloud
    marine navigation
    Fleet Operation Centre (FOC)
    Fast Time Simulation (FTS)
    Risk Control Option (RCO)
    Opis:
    The e-Navigation initiative of IMO and IALA has stimulated and inspired a number of ambitious research projects and technological developments in the maritime field. The global transportation of goods is not only facing rapidly growing ship dimensions but also increasing industrial off shore activities, changing the relation between the need of areas for safe and reliable vessel traffic and its availability. Off shore activities is increasingly limiting the available navigable spaces and concentrating traffic flows, especially in coastal waters and port approaches. Enhanced technical systems and equipment with numerous added functionalities are in use and under further development providing new opportunities for traffic surveillance and interaction. Integrated Bridge and Navigation Systems on board modern ships not only support the bridge teams and pilots on board, but also allow for more comprehensive shore-based traffic monitoring and even allow for re-thinking of existing regimes and procedures on traffic management. A sophisticated manoeuvring support tool using fast real-time simulation technology and its application for on board support as well as for its potential integration into enhanced shore-based monitoring processes when linked with the ‘Maritime Cloud’ will be introduced. The potential for contribution to generate harmonized collision warnings will be discussed and explained. This paper is a reviewed and extended version of (Baldauf, Benedict & Gluch, 2014).
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8 no. 4; 613-617
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On-line losses minimization of induction motor vector control
    Autorzy:
    Rouabah, Z.
    Abdelhadi, B.
    Anayi, F.
    Zidani, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/141053.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    minimalizacja strat
    efektywność
    sterowanie polowo zorientowane
    silnik indukcyjny
    algorytm genetyczny kodowania rzeczywistego
    loss minimization
    efficiency
    field-oriented control
    FOC
    induction motor
    real-coded genetic algorithm
    RCGA
    Opis:
    Conventional field-orientated Induction motor drives operate at rated flux even at low load. To improve the efficiency of the existing motor it is important to regulate the flux of the motor in the desired operating range. In this paper a loss model controller (LMC) based on the real coded genetic algorithm is proposed, it has the straightforward goal of maximizing the efficiency for each given load torque. In order to give more accuracy to the motor model and the LMC a series model of the motor which consider the iron losses as a resistance connected in series with the mutual inductance is considered. Digital computer simulation demonstrates the effectiveness of the proposed algorithm and also simulation results have confirmed that this algorithm yields the optimal efficiency.
    Źródło:
    Archives of Electrical Engineering; 2011, 60, 3; 257-268
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Merging conventionally navigating ships and MASS - Merging VTS, FOC and SCC?
    Autorzy:
    Baldauf, M.
    Fischer, S.
    Kitada, M.
    Mehdi, R. A.
    Al-Quhali, M. A.
    Fiorini, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/117306.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Maritime Autonomous Surface Ships (MASS)
    Vessel Traffic Service (VTS)
    e-Navigation
    fleet operation centre (FOC)
    International Maritime Organization (IMO)
    ship control centre (SCC)
    unmanned shipping
    unmanned ship
    Opis:
    Current maritime transportation and shipping is characterized by rapid technological developments effecting the basic concepts of operating ships and even changing traditional paradigms of controlling ships. The e-Navigation concept of the International Maritime Organization (IMO) specifically aims at more comprehensive and reliable support of the human operators on-board and ashore. However, autonomous unmanned ships remote controlled or even autonomously navigating are expected to come soon. In this paper, selected operational aspects of maritime traffic merging conventional and unmanned remote controlled ships in coastal areas are discussed. Furthermore, some preliminary results of experimental simulation studies into a future scenario of maritime traffic are presented and preliminary conclusions in respect to job profiling and training requirements are discussed.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 495-501
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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