基本信息:

• 专利标题： Power supply circuits
• 专利标题（中）：Stromversorgungseinheit
• 申请号：EP98301416.8 申请日：1998-02-26
• 公开(公告)号：EP0863452A1 公开(公告)日：1998-09-09
• 发明人： Lewis, Eric Anthony
• 申请人： CEGELEC CONTROLS LTD.
• 申请人地址： Boughton Road Rugby Warwickshire CV21 1BU GB
• 专利权人： CEGELEC CONTROLS LTD.
• 当前专利权人： CEGELEC CONTROLS LTD.
• 当前专利权人地址： Boughton Road Rugby Warwickshire CV21 1BU GB
• 代理机构： Waters, Jeffrey
• 优先权： GB9704810 19970307
• 主分类号： G05F1/70
• IPC分类号： G05F1/70 ; H02M5/443 ; H02J3/18 ; H02P7/295 ; H02M1/084

摘要：

A power converter 2, which uses semiconductors such as thyristors to switch the AC supply at various phase angles to supply power to a load 1 generates lagging reactive power which is a disadvantage from several points of view. For this reason, a capacitor 3, which generates leading reactive power is provided to counteract the lagging reactive power, but this then has the effect of generating the leading reactive power when the load 1 is disconnected by opening of switch 8. To overcome the problems that this will cause in terms of the supply, a switch 8 is provided to enable an inductor 21 to be connected in parallel with the load, and the power converter is controlled so that the leading reactive power of the capacitor is now counteracted by the lagging reactive power of the inductor 21. In addition to converters 2 which convert AC to DC, the invention is also applicable to power converters which convert AC to AC and AC to DC and back to AC.

摘要（中）：

使用诸如晶闸管之类的半导体的功率转换器2以各种相位角切换AC电源以向负载1供电以产生滞后无功功率，这在几个观点上是不利的。 因此，提供产生前导无功功率的电容器3以抵消滞后无功功率，但是当负载1通过开关8断开而断开时，产生无功功率的效果。为了克服问题 这将导致在供电方面，提供开关8以使得电感器21能够与负载并联连接，并且功率转换器被控制，使得电容器的前导无功功率现在被滞后 电感器21的无功功率。除了将AC转换为DC的转换器2之外，本发明还可应用于将AC转换成AC和AC至DC并返回到AC的电力转换器。

公开/授权文献:

• EP0863452B1  Power supply circuits 公开/授权日：2004-01-28

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