Active harmonic filter and power factor corrector

摘要: An active harmonic filter selectively sources current to or draws from power lines. The includes a controller which executes predictor routine predicts the be supplied drawn line at time t+.DELTA.t reduce load induced phase differences between voltage and current. integrating slow control integrates difference currents actual desired in equivalent segments of different cycles line. integrated may combined with proportionally controlled eliminate currents. A balancing enables balance two more lines polyphase predictor, routines, used singly combination improve condition on