Harmonic Mitigation in Electric Railway Systems Using Improved Model Predictive Control

An electric multiple unit (EMU) high-speed train is the dynamic load that degrades power quality in an railway system. Therefore, a improvement system using active filter (APF) must be considered. Due to oscillating current condition, fast and accurate harmonic current-tracking performance required. As such, this paper proposes design of model predictive control (MPC) since minimization cost function MPC process can suitably determine APF switching states. The technique based on mathematical model. This controller was designed compensate time delay digital control. Moreover, synchronous detection (SD) method applied reference calculations, as shown paper. To verify proposed MPC, overall implemented eZdsp F28335 board by hardware-in-the-loop technique. testing results indicated provide response compared with proportional-integral controller. In changing still effective providing good result after compensation. percentage total distortion, unbalance factor, factor would also kept within IEEE Standard 519 1459.