IEEJ Journal of Industry Applications
Online ISSN : 2187-1108
Print ISSN : 2187-1094
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5 巻 , 1 号
選択された号の論文の6件中1~6を表示しています
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Paper
  • Michael Fleischer, Keiichiro Kondo
    5 巻 (2016) 1 号 p. 1-9
    公開日: 2016/01/01
    ジャーナル フリー
    The increasing performance of modern electric locomotives results in slip-stick vibrations in the traction drive-train due to wheel-rail contact. This can be remedied by the introduction of a novel modal state control scheme for active oscillation damping to avoid the loss of traction force caused by passive slip readhesion control. This paper describes the basic concept of the active control scheme enhanced with anti-windup and a simple starting method that can use any standard controller. The limits of the active control scheme are pointed out and are circumvented by coupling with passive readhesion control. The resulting control scheme benefits from the advantages of both control concepts utilized with different adhesion force gradients. Finally, the predicted performance of the novel control is compared with the installed control concepts based on several test runs with a European high-performance locomotive.
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Letter
  • Asmarashid Bin Ponniran, Koji Orikawa, Jun-ichi Itoh
    5 巻 (2016) 1 号 p. 10-11
    公開日: 2016/01/01
    ジャーナル フリー
    In this paper, we propose a minimization design method of the inductance and the capacitance of the flying capacitors for a multi-level flying capacitor DC-DC boost converter (FCBC). The effectiveness of the small capacitances of the flying capacitors in three-level and five-level FCBCs is investigated. We experimentally confirmed that the distortion of the voltage across the input source and the input inductor is drastically reduced by increasing the number of levels. Thus, a small inductance value and a small capacitance value can be used for the input inductor and the flying capacitors, respectively, in an n-level FCBC. Therefore, the minimization of passive components in multi-level FCBCs is achieved. Moreover, the achieved maximum efficiencies of the designed three-level and five-level FCBCs are 98.5% and 97.8%, respectively, at an output power of 1kW.
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IPEC-Hiroshima
 
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