公开(公告)号：EP0392458A2

公开(公告)日：1990-10-17

申请号：EP90106844.5

申请日：1990-04-10

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Sato, Naoko, c/o Intellectual Property Div.

IPC分类号： H03K17/16 ,  H03K3/352 ,  H03K3/013 ,  H03K17/66 ,  H03K17/30 ,  H03K17/72

CPC分类号： H03K17/08124 ,  G05F1/45 ,  H02J3/1864 ,  H02M1/088 ,  H03K5/151 ,  Y02E40/12

摘要： A gate pulse generator for a static var compensator (SVC) constituted by a thyristor switched capacitor (TSC) comprises voltage detectors (5u, 5x) for respec­tively detecting forward and reverse voltages (Vu, Vx) applied to antiparallel-connected thyristors (3U, 3X) in the TSC. The antiparallel-connected thyristors (3U, 3X) comprise a plurality of series-connected forward thyris­tors (3U) and a plurality of series-connected reverse thyristors (3X). The gate pulse generator monitors the forward and reverse voltages (Vu, Vx) and determines whether a period (2 ms) in which both the forward and reverse voltages (Vu, Vx) are zero continues for a pre­determined period (2 ms) while reverse-phase sides (3X) of the antiparallel-connected thyristors (3U, 3X) are held in conduction periods (t30 - t40), respectively. The gate pulse generator prolongs an active period (t20 - t31) of a forward conduction period signal (PHSu) by the predetermined period (2 ms). Upon switching (t30) from in-phase conduction to revese-phase conduction, even if some of the plurality of series-connected thyri­stors (3U) are turned off, these thyristors are turned on again within the predetermined period (3U), and an overvoltage is not applied to these thyristors.

摘要翻译： 用于由晶闸管开关电容器（TSC）构成的静态无功补偿器（SVC）的门脉冲发生器包括用于分别检测施加到反并联连接晶闸管（3U，5U）的正向和反向电压（Vu，Vx）的电压检测器（5u，5x） 3X）。 反并联连接的晶闸管（3U，3X）包括多个串联连接的正向晶闸管（3U）和多个串联的反向晶闸管（3X）。 门脉冲发生器监视正向和反向电压（Vu，Vx），并确定正向和反向电压（Vu，Vx）均为零的周期（2ms）是否在相反的情况下持续预定的周期（2ms） 反并联连接的晶闸管（3U，3X）的相位侧（3X）分别保持在导通时段（t30-t40）。 门脉冲发生器将正向导通周期信号（PHSu）的有效期（t20-t31）延长预定期间（2ms）。 在将（t30）从同相导通切换到反相导通时，即使多个串联连接的晶闸管（3U）中的一些断开，这些晶闸管在预定周期（3U）内再次导通，并且 过电压不会施加到这些晶闸管。

公开(公告)号：EP0392458B1

公开(公告)日：1994-09-28

申请号：EP90106844.5

申请日：1990-04-10

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Sato, Naoko, c/o Intellectual Property Div.

IPC分类号： H03K17/16 ,  H03K3/352 ,  H03K3/013 ,  H03K17/66 ,  H03K17/30 ,  H03K17/72

CPC分类号： H03K17/08124 ,  G05F1/45 ,  H02J3/1864 ,  H02M1/088 ,  H03K5/151 ,  Y02E40/12

公开(公告)号：EP0392458A3

公开(公告)日：1991-05-15

申请号：EP90106844.5

申请日：1990-04-10

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Sato, Naoko, c/o Intellectual Property Div.

IPC分类号： H03K17/16 ,  H03K3/352 ,  H03K3/013 ,  H03K17/66 ,  H03K17/30 ,  H03K17/72

CPC分类号： H03K17/08124 ,  G05F1/45 ,  H02J3/1864 ,  H02M1/088 ,  H03K5/151 ,  Y02E40/12

摘要： A gate pulse generator for a static var compensator (SVC) constituted by a thyristor switched capacitor (TSC) comprises voltage detectors (5u, 5x) for respec­tively detecting forward and reverse voltages (Vu, Vx) applied to antiparallel-connected thyristors (3U, 3X) in the TSC. The antiparallel-connected thyristors (3U, 3X) comprise a plurality of series-connected forward thyris­tors (3U) and a plurality of series-connected reverse thyristors (3X). The gate pulse generator monitors the forward and reverse voltages (Vu, Vx) and determines whether a period (2 ms) in which both the forward and reverse voltages (Vu, Vx) are zero continues for a pre­determined period (2 ms) while reverse-phase sides (3X) of the antiparallel-connected thyristors (3U, 3X) are held in conduction periods (t30 - t40), respectively. The gate pulse generator prolongs an active period (t20 - t31) of a forward conduction period signal (PHSu) by the predetermined period (2 ms). Upon switching (t30) from in-phase conduction to revese-phase conduction, even if some of the plurality of series-connected thyri­stors (3U) are turned off, these thyristors are turned on again within the predetermined period (3U), and an overvoltage is not applied to these thyristors.