Three-level ladrc APF compensation current control system based on
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A three-level LADRC APF compensation current based control system, characterized in that it comprises a voltage zero crossing detection means, a current detection signal conditioning circuit unit, A / D analog-digital conversion circuit unit, D / A digital to analog conversion circuit unit, DSP unit, a storage unit, a pulse gate drive unit, a reference voltage circuit unit; its working method comprising: collecting a current; the DA D conversion; control compensation current amount of DSP processing; the AD conversion output digital to analog superiority wherein: simple and practical; high precision compensation; real time, execution speed; compatibility.