Yazar "Lipo, TA" seçeneğine göre listele

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    Induction machine based flywheel energy storage system
    (Ieee-Inst Electrical Electronics Engineers Inc, 2003) Alan, I; Lipo, TA
    This study introduces a field oriented controlled (FOC) induction machine based flywheel energy storage (FES) system fed from a 20 kHz high frequency (I-IF) ac link and pulse density modulated (PDM) Converter. The feasibilty of FES system is investigated both in software and hardware and is demonstrated succesfully in both cases. The investigated system offers a good potential as a temporary energy storage system for various applications from automobile industry to aerospace applications.
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    Induction machine based flywheel energy storage system
    (Ieee-Inst Electrical Electronics Engineers Inc, 2003) Alan, I; Lipo, TA
    This study introduces a field oriented controlled (FOC) induction machine based flywheel energy storage (FES) system fed from a 20 kHz high frequency (I-IF) ac link and pulse density modulated (PDM) Converter. The feasibilty of FES system is investigated both in software and hardware and is demonstrated succesfully in both cases. The investigated system offers a good potential as a temporary energy storage system for various applications from automobile industry to aerospace applications.
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    Starter/generator employing resonant-converter-fed induction machine - Part I: Analysis
    (Ieee-Inst Electrical Electronics Engineers Inc, 2000) Alan, I; Lipo, TA
    A new procedure to start a jet engine (JE) and to generate power by means of a single induction machine (IM) directly coupled to the turbine is presented. The JE is brought to an initial speed by the motoring operation of the IM. Later, the IM is taken into generating mode and the turbine is applied its excitation. The turbine catches up and starts to drive the induction generator (IG). The generated power is converted to a three-phase (3 empty set), 400 Hz voltage-regulated bus via a double stage power conversion utilizing a 20 kHz parallel resonant high frequency (HF) ae link and pulse density modulated (PDM) converter technology. Independent of the engine speed, a constant amplitude and constant frequency 3 empty set voltage-regulated ac bus is formed and maintained by the proper control of the power converters. Here the feasibility of operation of such a system has been demonstrated in software where the JE turbine is modeled and replaced by a de machine. An introduction, background, operation priciples of the overall system, and the related software simulations are presented and discussed.
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    Starter/generator employing resonant-converter-fed induction machine - Part II: Hardware prototype
    (Ieee-Inst Electrical Electronics Engineers Inc, 2000) Alan, I; Lipo, TA
    Feasibility of operation of a new procedure to start a jet engine (JE) and to generate power by means of a single induction machine (IM) directly coupled to the turbine has been shown by means of a hardware prototype. An introduction, background, operation principle of this type of a system and software simulation portion was presented in Part I of this article. Both in software simulation and in the experimental phase of the studies the JE is replaced by a de machine. The de machine is brought to an initial speed by the motoring operation of the IRI. Later, the IM is taken into generating mode and the de machine is into motoring mode of operation, This mode would correspond to the turbine catch-up initiation phase and initiate driving phase of the induction generator (IG) in the actual world, The generated power is then converted to a three-phase 3 empty set, 400 Hz tin software), 60 Hz tin hardware), 115 V voltage-regulated bus via a double stage power conversion utilizing a 20 kHz parallel resonant high frequency (HF) ac link and pulse density modulated (PDM) converter technology. Independent of the coupled machine speed, a constant amplitude and constant frequency 3 empty set voltage-regulated ac bus is formed and maintained by the proper control of the power converters.