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    • 4. 发明授权
    • Power conversion apparatus including an inverter-converter combination
    • 电力转换装置包括逆变器转换器组合
    • US09276496B2
    • 2016-03-01
    • US13699815
    • 2010-10-26
    • Satoshi MurakamiMasaki YamadaTakashi KaneyamaKazutoshi Awane
    • Satoshi MurakamiMasaki YamadaTakashi KaneyamaKazutoshi Awane
    • H02M7/219H02M7/49H02M7/483
    • H02M7/219H02M7/49H02M2007/4835
    • An inverter circuit is connected in series to an AC power supply, and at the subsequent stage, a smoothing capacitor is connected via a converter circuit including semiconductor switching devices. A control circuit controls the converter circuit by providing a short-circuit period for bypassing the smoothing capacitor in each cycle, and controls the inverter circuit to improve the power factor of the AC power supply by using a current instruction such that the voltage of the smoothing capacitor becomes a target voltage. When the voltage of a DC voltage source of the inverter circuit has exceeded a predetermined upper limit, the control circuit increases the current instruction to control the inverter circuit, thereby increasing the discharge amount of the DC voltage source. Thus, even if the voltage variation of the DC voltage source of the inverter circuit increases, it is possible to stably continue the control.
    • 逆变器电路与AC电源串联连接,在后续阶段,通过包括半导体开关器件的转换器电路连接平滑电容器。 控制电路通过在每个周期中提供用于旁路平滑电容器的短路周期来控制转换器电路,并且通过使用电流指令来控制逆变器电路来提高交流电源的功率因数,使得平滑电压 电容器成为目标电压。 当逆变器电路的直流电压源的电压超过预定的上限时,控制电路增加用于控制逆变器电路的电流指令,从而增加直流电压源的放电量。 因此,即使逆变器电路的直流电压源的电压变化增大,也可以稳定地进行控制。
    • 7. 发明授权
    • DC-DC converter
    • DC-DC转换器
    • US09065341B2
    • 2015-06-23
    • US13980911
    • 2011-11-24
    • Satoshi MurakamiMasaki YamadaRyota KondoTakashi KaneyamaKazutoshi Awane
    • Satoshi MurakamiMasaki YamadaRyota KondoTakashi KaneyamaKazutoshi Awane
    • H02M3/335
    • H02M3/335H02M3/33507
    • A DC-DC converter in which a primary side and a secondary side are insulated by a transformer, includes: two diodes having anodes respectively connected to both ends of a secondary winding of the transformer and cathodes connected to each other; a series circuit composed of a resistor and a capacitor connected in series; and a snubber circuit formed by connecting the cathodes of the diodes to the connection point between the resistor and the capacitor. Surge voltage caused on the secondary side of the transformer is clamped at the voltage of the capacitor, and surge energy stored in the capacitor is regenerated to a load via the resistor. Thus, surge voltage caused on the secondary side of the transformer is suppressed with a simple configuration, and effective use of surge energy is ensured.
    • 其中初级侧和次级侧由变压器绝缘的DC-DC转换器包括:具有分别连接到变压器的次级绕组的两端的阳极和彼此连接的阴极的两个二极管; 由电阻器和串联连接的电容器组成的串联电路; 以及通过将二极管的阴极连接到电阻器和电容器之间的连接点而形成的缓冲电路。 在变压器的二次侧产生的浪涌电压被钳位在电容器的电压上,并且存储在电容器中的浪涌能量通过电阻再生成负载。 因此,通过简单的结构来抑制在变压器的次级侧产生的浪涌电压,并且确保有效地利用浪涌能量。
    • 10. 发明授权
    • Stator cooling device
    • 定子冷却装置
    • US08653705B2
    • 2014-02-18
    • US13282925
    • 2011-10-27
    • Satoshi Murakami
    • Satoshi Murakami
    • H02K9/00
    • H02K9/19H02K1/185H02K5/20
    • A stator cooling device configured with a cylindrical stator main body that uses a rotation axis of a rotary electric machine as a central axis. A fixed portion is formed on an outer peripheral portion of the stator main body so as to protrude outward in a radial direction of the stator main body. A cooling medium flow passage includes an injection hole through which cooling medium is injected. The fixed portion is configured above a horizontal plane that passes through the central axis, and a peak portion that is farthest in the fixed portion from the central axis as viewed in an axial direction of the central axis. The injection hole opens toward the fixed portion above the outer peripheral portion of the stator and toward the first vertical plane side with respect to a second vertical plane that is a vertical plane that passes through the peak portion.
    • 一种定子冷却装置,其构造为使用旋转电机的旋转轴线作为中心轴的圆柱形定子主体。 固定部分形成在定子主体的外周部上,以便在定子主体的径向方向上向外突出。 冷却介质流路包括注入冷却介质的注入孔。 固定部分配置在穿过中心轴线的水平平面上方,以及在中心轴线方向上从固定部分离中心轴线最远的峰部分。 喷射孔相对于穿过峰部的垂直平面的第二垂直平面朝向定子的外周部上方的固定部朝向第一垂直面侧开口。