ELECTRONIC POWER METER FOR DETECTING AN N PHASE CURRENT BASED ON WAVEFORM SUPERPOSITION OF A THREE PHASE INPUT CURRENT, AND N PHASE CURRENT DETECTING METHOD USING SAME

摘要

The present invention relates to an electronic power meter for detecting an N phase current based on waveform superposition of a three phase input current, and an N phase current detecting method using same. The electronic power meter comprises: a sampling unit for sampling a three phase input current and calculating sampled current values for each phase; and an N phase current calculating unit for receiving the sampled current values for each phase and calculating an N phase current using superposed results of the sampled values at an identical sampling time from among the sampled values for each phase over a unit of time.