-
公开(公告)号:US20100085037A1
公开(公告)日:2010-04-08
申请号:US12473166
申请日:2009-05-27
IPC分类号: G01R21/06
CPC分类号: G01R21/003 , G01R21/1331 , H03H11/18
摘要: A system and method for measuring reactive power which uses a pair of quadrate carriers to add a 90 degree phase shift to a voltage path or a current path in a power meter. The quadrate carriers have the same frequency but are offset in phase from each other by 90 degrees.
摘要翻译: 一种用于测量无功功率的系统和方法,该系统和方法使用一对正方形载波向功率计中的电压路径或电流路径增加90度的相移。 正交载波具有相同的频率,但相位偏移90度。
-
公开(公告)号:US08350558B2
公开(公告)日:2013-01-08
申请号:US12473166
申请日:2009-05-27
CPC分类号: G01R21/003 , G01R21/1331 , H03H11/18
摘要: A system and method for measuring reactive power which uses a pair of quadrate carriers to add a 90 degree phase shift to a voltage path or a current path in a power meter. The quadrate carriers have the same frequency but are offset in phase from each other by 90 degrees.
摘要翻译: 一种用于测量无功功率的系统和方法,该系统和方法使用一对正方形载波向功率计中的电压路径或电流路径增加90度的相移。 正交载波具有相同的频率,但相位偏移90度。
-