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    • 54. 发明授权
    • Device for reducing harmonics in three-phase poly-wire power lines
    • 减少三相多线电力线路谐波的装置
    • US07629786B2
    • 2009-12-08
    • US11660808
    • 2005-08-25
    • Sung Ho Lee
    • Sung Ho Lee
    • H01F30/12G05F1/12H02J1/02H02H7/04
    • H02J3/01H01F27/385H01F30/12Y02E40/40
    • The invention is a harmonics reduction device for three-phase poly-wire power lines, which can more reliably eradiate harmonics current applied to an electric power system via a neutral line. The invention comprises an electric power system having three-phase poly-wire power lines in order to supply alternating-current (AC) power voltage to a load; a zigzag transformer in which windings connected with three-phase lines in the electric power system are wound through first and second legs, second and third legs, and third and first legs of a core having three legs, respectively, while varying direction of each magnetic flux, and an intermediate point of each winding is commonly connected with a neutral line of the electric power system and that of the load; and an open delta connection portion in which an winding connected with the neutral line of a load side is wound through the three legs so as to be connected with a neutral line of the electric power system.
    • 本发明是一种用于三相多线电力线的谐波减少装置,其可以更可靠地通过中性线分散施加到电力系统的谐波电流。 本发明包括具有三相多线电力线的电力系统,以向负载提供交流(AC)电力电压; 一种锯齿形变压器,其中与电力系统中的三相线路连接的绕组分别通过第一和第二腿部,第二和第三腿部以及具有三条腿的芯部的第三和第一腿部缠绕,同时改变每个磁体的方向 每个绕组的中间点通常与电力系统的中性线和负载的中性点连接; 以及开放的三角形连接部分,其中与负载侧的中性线连接的绕组通过三个腿缠绕以便与电力系统的中性线连接。
    • 58. 发明申请
    • Capacitive pressure sensor and method for fabricating the same
    • 电容式压力传感器及其制造方法
    • US20080061799A1
    • 2008-03-13
    • US11702149
    • 2007-02-03
    • Tae Sic KimSung Ho Lee
    • Tae Sic KimSung Ho Lee
    • G01R27/26H01G7/00
    • G01L9/0073Y10T29/43
    • A capacitive pressure sensor and a method for fabricating a capacitive pressure sensor are provided. The method includes etching the front surface of a silicon substrate to a designated depth; depositing an etching stopper on the surface of the silicon substrate, to stop the etching of the rear surface of the silicon substrate; depositing an upper electrode of a capacitor on the surface of the etching stopper; depositing an insulating surface of the capacitor on the surface of the upper electrode; depositing a lower electrode of the capacitor on the surface of the insulating surface to form the capacitor; forming a metal pad electrode on the front surface of a glass substrate; hybrid-bonding the lower electrode of the capacitor of the silicon substrate to the metal pad electrode of the glass substrate using an electric (anodic) bonding method; etching the rear surface of the silicon substrate bonded to the glass substrate to selectively expose the etching stopper and thus to form a membrane; and removing the exposed region of the etching stopper by wet etching. The capacitive pressure sensor has an area that changes according to the variation of external pressure so that the output changes linearly according to input, and uses hafnium oxide having a high dielectric constant as an insulating material to provide high capacitance, thus being improved in sensitivity.
    • 提供了电容式压力传感器和制造电容式压力传感器的方法。 该方法包括将硅衬底的前表面蚀刻到指定深度; 在硅衬底的表面上沉积蚀刻阻挡物,以停止硅衬底的后表面的蚀刻; 在所述蚀刻停止器的表面上沉积电容器的上电极; 在所述上电极的表面上沉积所述电容器的绝缘表面; 在绝缘表面上沉积电容器的下电极以形成电容器; 在玻璃基板的前表面上形成金属焊盘电极; 使用电(阳极)接合方法将硅衬底的电容器的下电极与玻璃衬底的金属焊盘电极混合结合; 蚀刻与玻璃基板接合的硅基板的后表面,以选择性地暴露蚀刻停止层,从而形成膜; 并通过湿蚀刻去除蚀刻终止体的暴露区域。 电容式压力传感器具有根据外部压力的变化而变化的面积,使得输出根据输入线性变化,并且使用具有高介电常数的氧化铪作为绝缘材料以提供高电容,从而提高灵敏度。