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DSP-based active power filter with predictive current control

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2 Author(s)
Seung-Gi Jeong ; Dept. of Electr. Eng., Kwangwoon Univ., Seoul, South Korea ; Myung-Ho Woo

This paper presents an active power filter based on a digital signal processing (DSP) controller with enhanced current control performance. A novel predictive current control method is introduced to compensate the phase error of harmonic components caused by discrete sampling and finite nonnegligible execution time delay. The concept of average current control is also introduced that is adequate for digital current control. With a close coordination between the reference current prediction, PWM pattern generation, and control timing, a high performance control is achieved. Experimental results show that the developed system gives satisfactory performance in harmonic and reactive power compensation

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Industrial Electronics, IEEE Transactions on  (Volume:44 ,  Issue: 3 )