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    Wyświetlanie 1-7 z 7
    Tytuł:
    Torque ripple calculation of two-phase im supplied by three-leg VSI inverter
    Autorzy:
    Záskalický, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1199352.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    two-phase motor
    torque ripple
    mathematical model
    space phasor
    silnik dwufazowy
    moment obrotowy
    model matematyczny
    Opis:
    The proposed paper deals with steady state estimation of a electromagnetic torque ripples and a current waveform of a two-phase induction motor (IM), which is supplied by an three-leg voltage source IGBT bridge connected inverter (VSI). The complex Fourier series analysis of the inverter’s output voltage was made, to obtain an analytical formula of supply voltage waveform. The space phasor theory has been applied to the two-phase induction machine model to obtain electromagnetic torque and supply current waveforms for various operation states.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2017, 3, 115; 13-17
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza parametrów pracy dwóch nowoczesnych silników turbodoładowanych
    Analysis of work parameters for two modern turbocharged engines
    Autorzy:
    Walczyna, M.
    Materek, D.
    Bieniek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/290022.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Inżynierii Rolniczej
    Tematy:
    hamownia inercyjna
    silnik spalinowy
    moc silnika
    moment obrotowy
    inertial engine test house
    combustion engine
    engine power
    torque
    Opis:
    W artykule przedstawiono wyniki badań silników z zapłonem samoczynnym, przeprowadzonych na hamowni inercyjnej. Badania wykazały, że silnik typu Y22DTR charakteryzuje się wyższą mocą oraz momentem obrotowym niż silnik typu AFN. Pomimo wyższego momentu obrotowego silnik Y22DTR posiada mniej korzystny zakres prędkości obrotowej wału korbowego, dla której moment obrotowy osiąga wartości zbliżone do maksymalnych. Uzyskane wyniki świadczą o tym, że układ korbowo-tłokowy silnika Y22DTR z uwagi na większy moment obrotowy i moc jest obciążony większymi siłami niż silnik AFN.
    The article presents results of tests for self-ignition engines, carried out in inertial engine test house. The research has shown that Y22DTR type engine has more horsepower and higher torque than AFN type engine. In spite of higher torque, the Y22DTR engine offers less favourable range of crankshaft rotational speed, for which torque reaches values close to maximum. The results show that due to higher torque and horsepower, the assembly of crankshaft, pistons and connecting rods in the Y22DTR engine is subject to higher forces than the AFN engine.
    Źródło:
    Inżynieria Rolnicza; 2010, R. 14, nr 2, 2; 257-264
    1429-7264
    Pojawia się w:
    Inżynieria Rolnicza
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnostic aspects of a crankshaft torsional oscillations monitoring by IAS measurement
    Autorzy:
    Dereszewski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/246784.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    diagnostics
    diesel engine
    torsional vibrations
    torque
    angular speed
    diagnostyka
    silnik wysokoprężny
    drgania skrętne
    moment obrotowy
    prędkość kątowa
    Opis:
    Continuous monitoring of diesel engine performance under its operating is critical for prediction of malfunction development and subsequently functional failure detection. Analysis of Instantaneous Angular Speed (IAS) of the crankshaft is considered as one of non-intrusive and effective method of detection of combustion quality deterioration. The article contains presentation of attempt of monitoring of piston engine’s crankshaft torsional vibrations by measurement of Instantaneous Angular Speed at free, and power output ends of the engine’s crankshaft. The angular speed measurements was done using two optical sensors for reading the IAS, mounted at shaft line’s opposite ends, one at free end of the crankshaft and second at end of generator’s shaft. In the article is presented description of the measurement system and explanation of its mode of work. Experiments were based at two kinds of malfunction possible to be simulated at test bed. First one was simulation of a leak of fuel injection pump, the second one relayed on mounting of sets of injection valves with different nozzles characteristics (spraying nozzle angle), giving different parameters of fuel injection. Presented results of experiment derives from test cycle carried out using laboratory stand of Gdynia Maritime University equipped with 3- cylinder self − ignition engine, powering electric generator.
    Źródło:
    Journal of KONES; 2018, 25, 1; 67-74
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research and development of an electric traction drive based on a switched reluctance motor
    Autorzy:
    Buriakovsky, S.
    Maslii, A.
    Pasko, O.
    Denys, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/375320.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    switched reluctance motor
    torque
    microcontroller
    quadrature encoder
    electronic switches
    silnik reluktancyjny przełączalny
    moment obrotowy
    mikrokontroler
    procesor sygnałowy
    przełączniki elektroniczne
    Opis:
    In the most developed countries, intensive studies are being carried out to utilize various types of electric machines such as synchronous motors with permanent magnets and traction motors with non-traditional magnetic systems on traction electric drives. Switched Reluctance Motors (SRM) are one of the most simple, reliable, and cost-efficient technology used in manufacture and operation. Its convenient traction performance, combined with the high overload capacity, makes its use promising for both freight and passenger rolling stock. Our research is directed to develop a control system for a four-phase SRM. The procedure of fuzzy-regulator synthesis is presented. A physical model of a switched reluctance drive is created, namely, it is a system of a wheel set and a motor. The efficiency of the control system with different types of speed regulators was checked and their main quality indicators were determined. According to the results of the analysis, it was found that the fuzzy regulator more precisely controls the regulated value.
    Źródło:
    Transport Problems; 2018, 13, 2; 69-79
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stress Concentration Analysis of the Injection Pump Shaft
    Autorzy:
    Bałon, Paweł
    Świątoniowski, Andrzej
    Rejman, Edward
    Kiełbasa, Bartłomiej
    Smusz, Robert
    Szostak, Janusz
    Kowalski, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/102913.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    pump shaft
    diesel engine
    FEM analysis
    torque
    torsion
    pump drive shaft
    wał pompy
    silnik wysokoprężny
    analiza MES
    moment obrotowy
    skręcanie
    wał napędowy pompy
    Opis:
    The paper presents the methodology for designing the injection shaft drive for diesel engines with 2,3,4,6 and 8 cylinders as well as power from 2.5 to 52 kW per cylinder using the FEM method and experimental research. The pump is the original solution of the authors. The shaft is a basic part of the pump with a complex structure. In order to assess the state of stress in the shaft, the FEM analytical method was used and experimental tests were carried out, subjecting the shaft to torsional moment resulting from the transmitted power. Experimental studies confirmed the results of numerical calculations and the correctness of the adopted solution. The destructive tests were carried out to assess the maximum load capacity of the shaft, loading it with an increasing torque until visible plastic deformations occurred. This condition appeared at twice the moment (Ms = 602 Nm) in relation to the maximum predicted moment in operation (extreme operating conditions of the pump shaft). The theoretical studies confirmed very significant stress concentration (αk coefficient at the level of 2.63 or even 4.7), which may be the cause of fatigue cracks. It also determines the strength of the shaft and its torsional stiffness, which influences the proper functioning of the pump and ensures adequate fuel injection phases.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 2; 155-162
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Predictive torque control of induction motor drive with reduction of torque and flux ripple
    Autorzy:
    Kiani, Babak
    Mozafari, Babak
    Soleymani, Soodabeh
    Mohammadnezhad Shourkaei, Hosein
    Powiązania:
    https://bibliotekanauki.pl/articles/2086858.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    FS-MPTC
    induction motor
    duty ratio
    voltage vector
    torque
    flux ripples
    silnik indukcyjny
    cło
    wektor napięcia
    moment obrotowy
    fala strumienia
    tętnienie momentu obrotowego
    Opis:
    The continuing efforts for reduction of the torque and flux ripples using Finite Set Model Predictive Direct Torque Control methods (FS-MPDTC) have been currently drowning a great attention from the academic communities and industrial applications in the field of electrical drives. The major problem of high torque and flux ripples refers to the consideration of just one active voltage vector at the whole control period. Implementation of two or more voltage vectors at each sampling time has recently been adopted as one of the practical techniques to reduce both the torque and flux ripples. Apart from the calculating challenge of the effort control, the parameter dependency and complexity of the duty ratio relationships lead to reduction of the system robustness. those are two outstanding drawbacks of these methods. In this paper, a finite set of the voltage vectors with a finite set of duty cycles are employed to implement the FS-MPDTC of induction motor. Based on so-called Discrete Duty Cycle- based FS-MPDTC (DDC-FS-MPDTC), a base duty ratio is firstly determined based on the equivalent reference voltage. This duty ratio is certainly calculated using the command values of the control system, while the motor parameters are not used in this algorithm. Then, two sets of duty ratios with limit members are constructed for two adjacent active voltage vectors supposed to apply at each control period. Finally, the prediction and the cost function evaluation are performed for all of the preselected voltage vectors and duty ratios. However, the prediction and the optimization operations are performed for only 12 states of inverter. Meanwhile, time consuming calculations related to SVM has been eliminated. So, the robustness and complexity of the control system have been respectively decreased and increased, and both the flux and torque ripples are reduced in all speed ranges. The simulation results have verified the damping performance of the proposed method to reduce the ripples of both the torque and flux, and accordingly the experimental results have strongly validated the aforementioned statement.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 4; e137727, 1--13
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of the two-rotor electric motor of a drive of vehicle drive wheels
    Autorzy:
    Sergienko, Nikolay
    Kuznetsov, Valeriy
    Liubarskyi, Borys
    Pastushchina, Mariia
    Gołębiowski, Piotr
    Tkaczyk, Sławomir
    Powiązania:
    https://bibliotekanauki.pl/articles/2067404.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    two-rotor electric motor
    torque
    revolution
    slip
    drive
    drive wheel
    electric vehicle
    hybrid vehicles
    silnik elektryczny dwuwirnikowy
    moment obrotowy
    obrót
    poślizg
    napęd
    pojazd elektryczny
    pojazd hybrydowy
    Opis:
    In recent years, electric and hybrid vehicles have taken more and more attention due to their apparent advantages in saving fuel resources and reducing harmful emissions into the environment. Even though electric vehicles can solve the ecological problem, their operation is faced with a number of inconveniences associated with a limited driving distance from a single charge due to limited storage of energy from an independent power source and a lack of the required service and repair infrastructure. In hybrid and electric vehicles one of the main parameters is the curb weight, which affects energy consumption, vehicle speed, stability, controllability and maneuverability. In this regard, leading car manufacturers use parts with a low specific weight (non-metallic, aluminum alloys, etc.) in the design and also exclude some units from the design. Due to these technical solutions, the vehicle's operating is improved. One of the groups of parameters to be defined when designing a new electric vehicle is the parameters relating to the electric motor. The purpose of the article is determination of the mechanical characteristics of a two-rotor electric motor during magnetic flux control and assessment of the possibility of organizing the drive of the drive wheels of the vehicle. The electric motor has two mechanically independent outputs. For the study, an electrical equivalent diagram has been developed for the given two-rotor electric motor. A simulation model of the equivalent diagram has been built. Simulating the interaction processes of the rotors with the stator made it possible to obtain data for building the mechanical characteristics for each output of the electric motor. Analysis and processing of the mechanical characteristics data of the electric motors showed the conformity and the range of changes in the torque on each of the rotors when changing their slip and revolution, which are required when building algorithms for the operation of electric motor control systems as part of drives for various purposes. Analysis of the simulation results made it possible to assess the possibility of using the considered two-rotor electric motor for the drive of drive wheels in an electric and hybrid wheeled vehicle.
    Źródło:
    Archives of Transport; 2021, 60, 4; 245--257
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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