This paper introduces a design and simulation of an adaptive shunt active power filter (APF) for
harmonic mitigation and power factor (PF) correction of 630 kW DC motor (DCM) drive
(called By Pass Motor Fan in production line # 2 in Assiut cement company). Due to the
presence of power thyristor converters, a very bad PF and different harmonic components exist
in the system, especially in the input current to the DCM drive. All measurements needed for
complete analysis at the Medium Voltage (MV) supply source side and at Low Voltage (LV)
motor drive side are performed using professional power quality (PQ) analysers and their
associated software programs. The studied system is modelled and simulated using MATLAB
Simulink software. The instantaneous active and reactive current components id and iq control
method is used in this study to drive the shunt active filter. Therefore the harmonic contents at
MV supply source and at point of common coupling (PCC) with the DCM drive are reduced to
the standard values. Both digital simulation and practical measurements are presented and
consistent. The results show that a good dynamic and steady-state performance of the system is
achieved