電気学会論文誌D(産業応用部門誌)
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
143 巻, 12 号
選択された号の論文の20件中1~20を表示しています
特集:半導体電力変換研究会
特集論文
  • 菊地 尚斗, 日下 佳祐, 渡辺 大貴, 伊東 淳一
    2023 年 143 巻 12 号 p. 758-765
    発行日: 2023/12/01
    公開日: 2023/12/01
    ジャーナル 認証あり

    This paper proposes a hybrid modulation for a solid-state transformer (SST) with an input-series output-parallel (ISOP) connected cells. One of the cells on the high-voltage side for power factor correction (PFC) is driven using pulse width modulation (PWM) to compensate for the harmonic components of the input current, whereas the other cells are driven using square-wave operation. The square-wave operation cell enables the use of low-cost Si devices instead of expensive SiC devices, which reduces the cost of the SST. Moreover, this paper proposes the balancing control of the conduction loss in each square-wave cell. The experimental results demonstrate that the total harmonic distortion of the input current is 2.91%, and the conduction loss of each square-wave cell is well-balanced.

  • 桐淵 岳, 井上 征則, 森本 茂雄
    2023 年 143 巻 12 号 p. 766-775
    発行日: 2023/12/01
    公開日: 2023/12/01
    ジャーナル 認証あり

    Permanent magnet synchronous motors (PMSM) are very popular in the industrial market. Recently, robots are installed to compensate for the shortage of labor. Due to the increase in motors, the number of power lines and position sensor cable wiring are increased; this increase in complicated wiring is a problem. As a method to solve these problems, power superimposition technology in the power line of a PMSM is expected to reduce the distribution cables. In this paper, the power superposition technology method, and circuit equations of mounting transformers in power lines are presented and are then verified by experiment, simulation, and linear analysis. The circuit equation is proposed as a three-phase circuit equation, which is transformed into a dq-circuit equation by a transformation matrix. The characteristics of the electric angular frequency versus the dq-axis voltage demonstrated satisfactory results, with errors within 1% in linear analysis and simulation. The linear analysis and experiment are shown to be similar, although there are some errors. The validity of the circuit equations could be demonstrated by the verification results.

  • 松野 広暉, 秋山 啓, 吉本 貫太郎, 横山 智紀
    2023 年 143 巻 12 号 p. 776-784
    発行日: 2023/12/01
    公開日: 2023/12/01
    ジャーナル 認証あり

    A novel voltage boost system using DC-inputs direct electric-power converter (D-EPC) is proposed. D-EPC is an inverter that can control the distribution of power from two sources. In this study, a voltage boost system without boost chopper was developed using the power distribution control of D-EPC. The power distribution control can control the voltage of the smoothing capacitor in the D-EPC. The effectiveness of the proposed voltage boost system was verified using a prototype of the D-EPC circuit and controller.

特集:家電・民生技術
特集論文
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