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    • 4. 发明授权
    • Voltage compensation system
    • 电压补偿系统
    • US5883503A
    • 1999-03-16
    • US869838
    • 1997-06-05
    • Melvin A. Lace
    • Melvin A. Lace
    • G05F1/24
    • G05F1/24
    • A voltage compensation system for an A.C. power line supplying one or more air conditioners, a telephone system or other telecommunication system, a battery charger, or some other utilization system that should have an input voltage within a given normal range. The voltage compensation system includes a transformer unit containing a transformer having at least two windings coupled electromagnetically by a transformer core; one of those windings preferably is in two segments that are connectable in series or in parallel. One winding is connected to an input terminal and to an output terminal. The other winding adds to the A.C. line voltage when the line voltage drops below a low voltage threshold and/or subtracts from the line voltage when the A.C. line voltage exceeds a high voltage threshold. If the A.C. line voltage is in the range required by the utilization system, the other transformer winding is effectively shorted out or otherwise disconnected. In automated versions, a line voltage sensor actuates a switching circuit to effect the desired compensation action. The voltage compensation system may handle under-voltage conditions, over-voltage conditions, or both. For chronic under-voltage or over-voltage conditions, direct winding connections may be employed instead of relays.
    • 供应一个或多个空调,电话系统或其他电信系统,电池充电器或应当具有在给定正常范围内的输入电压的一些其他利用系统的交流电力线路的电压补偿系统。 所述电压补偿系统包括:变压器单元,其包含变压器,所述变压器具有由变压器铁芯电磁耦合的至少两个绕组; 这些绕组中的一个优选地处于可串联或并联连接的两个段中。 一个绕组连接到输入端子和输出端子。 当线路电压低于低电压阈值时,另一个线圈增加了交流线路电压,和/或当交流线路电压超过高电压阈值时从线路电压减去。 如果交流线路电压在使用系统所需的范围内,则其他变压器绕组有效地短路或以其他方式断开。 在自动版本中,线路电压传感器启动开关电路以实现所需的补偿动作。 电压补偿系统可以处理欠电压条件,过压条件或两者兼有。 对于慢性欠电压或过电压条件,可以采用直接绕组连接而不是继电器。