Privious Issue

Volume 48 Number 2 (2017.6)

Special Feature

Power Electronics for Hybrid Vehicles

Special Feature


Research Reports

  • 2. Analysis and Design of Multiport DC/DC Converter for Next-generation Hybrid-vehicle SubsystemsPDF(1073kB)

    pages 1-9
    Kenichi Itoh, Shuntaro Inoue, Masanori Ishigaki, Takahide Sugiyama and Takaji Umeno


    A multiport converter using a coupling inductor and a hybrid modulation technique was proposed for dual-voltage 12 V/48 V HV subsystems. The converter integrates two circuit topologies: an isolated DC/DC converter (DAB) and a non-isolated multi-phase DC/DC converter. This paper describes the integration method for the two circuit topologies.

  • 3. Consideration of PDM and Power Decoupling Method in an Isolated Single-phase Matrix Converter for Battery ChargerPDF(653kB)

    pages 11-19
    Goh Teck Chiang, Takahide Sugiyama and Masaru Sugai


    This report provides an overview of proposed circuit structure and control schemes for the PHV/EV on-board battery charger that uses a matrix converter. Power decoupling method which employs a small LC buffer is studied to suppress the single phase power fluctuation. The experimental result shows that the battery current ripple is reduced by 77.1%.

  • 4. Electromagnetic Torque Converter for Hybrid Electric VehiclesPDF(1830kB)

    pages 21-33
    Takao Watanabe, Shu Asami, Eiji Tsuchiya, Masaki Ebina, Yasumitsu Osada, Tomoyuki Toyama and Akira Murakami


    This paper presents a new electromagnetic torque converter (eMAT) for HEVs. The eMAT doubles as a high-efficiency torque converter and a traction motor for automatic transmissions of HEVs. eMAT prototype bench testing showed that the transmission efficiency in the vehicle moving-off mode can be improved compared to that for a conventional torque converter.

  • 5. Noise Suppression System for AM Radio Receiver Using Quadrature Component of Received SignalPDF(753kB)

    pages 35-44
    Tomohisa Harada, Yoshiyuki Hattori, Shinya Ito, Mitoshi Fujimoto and Toshikazu Hori

    We propose a signal processing system to remove hybrid vehicle (HV) noise from a received AM radio signal. A replica of the HV noise is generated using the quadrature component of the received signal. The original HV noise is then canceled by subtracting the replica from the in-phase component.

  • 6. Analysis of Common-mode Noise Generation Mechanism in FM Radio Band Caused by DC-DC Converter PDF(1028kB)

    pages 45-56
    Atsuhiro Takahashi, Hiroshi Tsukada, Takashi Kojima, Yoshiyuki Hattori, Tsuyoshi Funaki and Osami Wada

    Common-mode voltage generation at the DC input terminals of a full-bridge DC-DC converter is investigated in the FM radio band. The transient noise voltage with damped oscillation generated by transistor switching, acts as a noise source, and drives the common-mode voltage due to the impedance imbalance between two power lines.

  • 7. Simulation of Electric Field inside Human Body Induced by Magnetic Field around Vehicle with Wireless Power Transfer System PDF(1288kB)

    pages 57-66
    Toshiaki Watanabe and Masaya Ishida


    The effect on the human body due to the leakage magnetic field from a magnetic coupling type wireless power transfer system was evaluated. It was found that the magnetic field strength and induced electric field in the body met the ICNIRP guidelines using a realistic charging scenario.

  • 8. High-voltage Power Line Communication System for Hybrid Vehicle PDF(734kB)

    pages 67-76
    Masaki Takanashi, Tomohisa Harada, Atsuhiro Takahashi, Hiroya Tanaka, Hiroaki Hayashi and Yoshiyuki Hattori


    Recently, hybrid vehicles and electric vehicles have become widespread. These vehicles incorporate a large number of electronic devices and employ a high-voltage battery. Therefore, some devices are expected to be directly connected to the battery from the view point of power consumption. In this paper, we propose and demonstrate a high-voltage PLC to control electronic devices.