DEVELOPMENT OF DSP-BASED ACTIVE POWER FILTER

This paper presents an active power filter based on DSP controller with enhanced performance of cur­rent control. A novel predictive current control method is introduced to compensate the phase error of harmonic com­ponents due to descrete sampling. 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 performances in its harmonic/reactive power compensation.