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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Najwatul Alisa Sabran
Universiti Tenaga Nasional
Control & Systems Engineering Electrical & Electronics Engineering

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LCL-filter design and analysis for PWM recuperating system used in DC traction power substation Najwatul Alisa Sabran; Chuen Ling Toh; Chee Wei Tan
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 13, No 4: December 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v13.i4.pp2244-2254

Abstract

Voltage source inverter (VSI) had been used in dc traction power substation to deliver the trains braking energy back to the utility grid. To mitigate low order harmonics components, pulse-width-modulation (PWM) technique is commonly used in VSI controlled. As a result, the ac voltage and current waveforms may contain high frequency ripples. This paper proposes to mitigate the high frequency harmonics using LCL-filter with series R-damper. This filter offers good attenuation on harmonics with smaller size compare to other passive filter topologies. Theoretical analysis and simulation verification are conducted in designing the proposed filter. System level simulation had also been carried out. Sinusoidal grid current and voltage waveforms are recorded (THD<2%). This paper also includes damping losses analysis in conjunction with resonance peak suppression in designing the R-damper.
Co-Authors Chee Wei Tan Chuen Ling Toh