Title :
Second harmonic current reduction by using a resonant circuit in a single-phase battery charger
Author :
Hyunsung An ; Hanju Cha
Author_Institution :
Dept. of Electr. Eng., Chungnam Nat. Univ., Daejeon, South Korea
Abstract :
This paper discusses a battery ripple current effect on battery lifetime and mitigation of the second harmonic current in a single-phase battery charger for residential use. A new L-C resonant circuit is added to reduce the second harmonic current component which flows into battery bank. The second harmonic component reduction method is analyzed with an equivalent circuit of battery model, resonant circuit and charger circuit, and design rule is discussed. Ratio of battery second harmonic current to dc current is decreased to 3.2% from 32.7% by adding the proposed L-C resonant circuit. Feasibility of the reduction method is verified by simulation and experiment.
Keywords :
LC circuits; battery chargers; equivalent circuits; harmonics suppression; resonant invertors; DC current; L-C resonant circuit; battery bank; battery ripple current effect; equivalent circuit; inverter; second harmonic current reduction; single-phase battery charger circuit; Batteries; Equivalent circuits; Harmonic analysis; Integrated circuit modeling; Inverters; Power harmonic filters; RLC circuits;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
DOI :
10.1109/ECCE.2013.6646870
