公开(公告)号：US20160056667A1

公开(公告)日：2016-02-25

申请号：US14702936

申请日：2015-05-04

Applicant: Hitachi, Ltd.

Inventor： Yuichiro KONISHI ,  Atsuo NISHIHARA ,  Keisuke HORIUCHI

IPC: H02J9/06 ,  H01F27/24

CPC classification number: H02J9/062 ,  H01F37/00

Abstract: When the power is normally supplied from the commercial power supply, the storage battery is charged by reducing the DC voltage by the charge/discharge chopper. The switching unit is provided in the previous stage of the converter. When the commercial power supply is in an abnormal state, the three-phase AC converter is operated as three discharge choppers connected in parallel by supplying the power of the storage battery to the converter and boosting the power by the switching element included in the converter. The power of the storage battery is boosted by the charge/discharge chopper, and a part of the discharging power is supplied. One three-phase AC reactor is provided in the previous stage of the converter, and the three-phase AC reactor has three coils, magnetic leg iron cores having the coils winding around them, and one leg without a coil winding around it connected in parallel.

Abstract translation: 当从商用电源通常供电时，通过减少充放电斩波器的直流电压对蓄电池进行充电。 开关单元设置在转换器的前一级。 当商用电源处于异常状态时，通过将蓄电池的电力供给到转换器并通过转换器中包含的开关元件提高功率，三相AC转换器作为三个并联连接的放电斩波器工作。 蓄电池的功率由充放电斩波器升压，并且提供一部分放电电力。 在转换器的前一级提供了一个三相交流电抗器，三相交流电抗器具有三个线圈，具有线圈绕在其上的磁腿铁心，并且一个没有线圈绕组的腿并联连接 。

公开(公告)号：US20160341487A1

公开(公告)日：2016-11-24

申请号：US15143705

申请日：2016-05-02

Applicant: Hitachi, Ltd.

Inventor： Yuichiro KONISHI ,  Daisuke MATSUMOTO

IPC: F28D15/02

CPC classification number: F28F3/022 ,  F28D15/0275 ,  F28F1/32 ,  F28F2275/08 ,  H01L23/3677 ,  H01L23/427 ,  H01L23/473

Abstract: The disclosed invention provides power conversion equipment in which the thermal resistance of thermal connections is reduced. A structure for cooling a heat generator includes a heat generator having at least one cooled surface having protruding convex portions formed thereon, a heat receiving spacer in which hollow portions into which the convex portions are inserted are formed, clamping members which press and clamp the heat receiving space and the heat generator sandwiched therebetween, and a cooler which cools the heat receiving spacer. In an engagement state in which the heat generator and the heat receiving spacer are engaged by the clamping members, a distance between the cooled surface and the end faces of the convex portions is smaller than a distance between the cooled surface and a face, facing either of the clamping members, of the heat receiving spacer.

Abstract translation: 所公开的发明提供了其中热连接的热阻降低的电力转换设备。 用于冷却发热体的结构包括具有形成有突出凸部的至少一个冷却表面的热发生器，形成有凸部插入的中空部的热接收间隔件，压入并夹持热量的夹紧部件 夹在其间的接收空间和发热体，以及冷却受热间隔件的冷却器。 在热交换器和热接收间隔件通过夹紧构件接合的接合状态下，冷却表面与凸部的端面之间的距离小于冷却表面与面之间的距离 的夹持构件。