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CONTROL CIRCUIT CONFIGURED TO DETERMINE WHEN A DIRECT CURRENT COMPONENT IN AN ALTERNATING CURRENT POWER LINE PASSES A DESIGNATED THRESHOLD
CONTROL CIRCUIT CONFIGURED TO DETERMINE WHEN A DIRECT CURRENT COMPONENT IN AN ALTERNATING CURRENT POWER LINE PASSES A DESIGNATED THRESHOLD
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机译:配置为确定交流电源线中的直流分量何时通过指定的阈值
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摘要
Control circuit includes a current sensor that is configured to detect alternating current transmitted through a power line. The alternating current includes an alternating current (AC) component and a direct current DC offset component. The control circuit also includes a filter sub-circuit that is configured to receive a sensor output from the current sensor that is representative of the AC component and the DC component. The AC component has a frequency higher than a frequency of the DC component. The filter sub-circuit is configured generate a DC output that is based on the DC component. The control circuit also includes an analysis sub-circuit that is configured to receive the DC output and determine that the DC output has passed a designated threshold. The analysis sub-circuit is configured to trip a relay or output a signal when the DC output passes the designated threshold.
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