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    A multi-input multi-phase DC-DC converter with soft-switching capability
    (Institute of Electrical and Electronics Engineers Inc., 2020) Akar, F.; Kale, M.; Yalcm, S.; Tas, G.
    This paper proposes a multi-input multi-phase dc-dc converter which can be used for constructing hybrid power systems while achieving active power sharing between sources. In the proposed converter, it is explored that decreasing switching frequency and current stresses of switches forming the phases is possible. Therefore, the problems encountered in its single phase version, such as, low efficiency, high input current ripple, high output voltage ripple, and electromagnetic inference (EMI), can be eliminated. Moreover, a snubber cell is attached to the converter to turn-on and turn-off the switches connected to the all input inductors under ZVS. By this way, it is targeted to improve the efficiency and power density © 2020 IEEE.
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    Walsh Function Based PWM AC Chopper Voltage Controller
    (Praise Worthy Prize Srl, 2012) Kale, M.
    This paper presents a selective harmonic elimination PWM AC chopper technique based on the Walsh function. Selective harmonic elimination technique calculated by the Fourier series involves solution of nonlinear transcendental equations. The switching angles of PWM AC chopper are calculated by solving linear algebraic equations obtained by the Walsh function approach in order to accurately cancel selected harmonic components of load voltage. Employing the proposed method, the selected harmonics of output voltage are eliminated and hence harmonic contents together with magnitude of output voltage can be adjusted in a wide range. In the experimental implementation, a capacitor-run single phase induction motor is driven by the proposed the Walsh function based PWM AC chopper. Numerical simulations and experimental results demonstrate the performance and feasibility of the proposed method. Copyright (C) 2012 Praise Worthy Prize S.r.l. - All rights reserved.