Energies (Oct 2013)

Output Current Ripple Reduction Algorithms for Home Energy Storage Systems

  • Jin-Hyuk Park,
  • Kyo-Beum Lee,
  • Hae-Gwang Jeong

DOI
https://doi.org/10.3390/en6105552
Journal volume & issue
Vol. 6, no. 10
pp. 5552 – 5569

Abstract

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This paper proposes an output current ripple reduction algorithm using a proportional-integral (PI) controller for an energy storage system (ESS). In single-phase systems, the DC/AC inverter has a second-order harmonic at twice the grid frequency of a DC-link voltage caused by pulsation of the DC-link voltage. The output current of a DC/DC converter has a ripple component because of the ripple of the DC-link voltage. The second-order harmonic adversely affects the battery lifetime. The proposed algorithm has an advantage of reducing the second-order harmonic of the output current in the variable frequency system. The proposed algorithm is verified from the PSIM simulation and experiment with the 3 kW ESS model.

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