Alternating current power supply with electronically regulated voltage
    2.
    发明公开
    Alternating current power supply with electronically regulated voltage 有权
    Wechselstromversorgung mit elektronisch geregelter Spannung

    公开(公告)号:EP1054502A1

    公开(公告)日:2000-11-22

    申请号:EP00109610.6

    申请日:2000-05-05

    申请人: VARAT S.r.l.

    IPC分类号: H02M3/337 G05F1/30

    CPC分类号: H02J3/1807 G05F1/30 Y02E40/30

    摘要: The power supply consists of two or more boosters (B1, B2, Bn), connected with their secondary circuit (2) in series on the phase (L) of the line to be regulated, each of them supplying a regulation voltage with a given value. Each booster is controlled by its own rapid switching system (9), by means of which each booster can be kept off or energized in order to provide the secondary circuit with the regulation voltage for which it was sized, and said switching systems are connected to an electronic process unit (5) controlling the output voltage (Vu) of the line (L), which preferably also detects the input characteristics of said line and which is pre-arranged so as to check whether the output voltage varies with respect to a preset nominal value, and to verify if the variation is below or above said value. Said unit is equipped with a phase-inverter (8) so that, if the line output voltage remains within the preset nominal value, the boosters are turned off, whereas, if the output voltage varies with respect to the nominal value, said process unit prearrange the phase-inverter to supply a voltage in phase or in counter-phase with respect to the output voltage, respectively in case an increase or a decrease regulation is required, and said process unit activates or deactivates the necessary boosters with a steps and substantially continuous regulation in order to bring back and keep the output voltage (Vu) as near as possible to the nominal value. The boosters used in the regulator are preferably characterized in that they show two primary circuits (1, 101), one of which is short-circuited or opened, while the other one is opened or connected to the output of said phase-inverter (8).

    摘要翻译: 电源由两个或更多个增压器(B1,B2,Bn)组成,它们与其二次回路(2)串联连接在要调节的管线的相(L)上,每个都提供给定的调节电压 值。 每个升压器由其自己的快速开关系统(9)控制,借助于此,每个升压器可被保持关闭或通电,以便向次级回路提供其尺寸调节电压,并且所述开关系统连接到 控制线路(L)的输出电压(Vu)的电子处理单元(5),其优选地还检测所述线路的输入特性,并且其被预先布置以便检查输出电压是否相对于 预设标称值,并验证变化是否低于或高于所述值。 所述单元配备有相逆变器(8),使得如果线路输出电压保持在预设标称值内,则增压器关闭,而如果输出电压相对于标称值变化,则所述处理单元 在需要增加或减少调节的情况下,分相相对于输出电压分别提供相位或相反的电压,并且所述处理单元以步骤和基本上激活或去激活所需的增压器 连续调节以使输出电压(Vu)尽可能接近标称值。 优选地,调节器中使用的助推器的特征在于,它们示出了两个初级电路(1,101),其中一个短路或断开,而另一个电路断开或连接到所述相位逆变器(8 )。