Grid-connected Battery Test System with AC regenerating capability

Author

Hyunsik Jo ; Byung-Moon Han ; Hanju Cha

Author_Institution

Dept. of Electr. Eng., Chungnam Nat. Univ., Daejeon, South Korea

fYear

2014

fDate

13-16 May 2014

Firstpage

82

Lastpage

86

Abstract

In this paper, battery test system with AC regeneration capability is proposed. The proposed 5kW battery test system consists of 32 channels of battery module, two three-phase bi-directional isolated interleaved dc-dc converters and three-phase inverter. In discharge mode, energy from batteries is delivered to grid and energy is delivered to battery from grid in charge mode. Grid currents are sinusoidally controlled with low THD and unity power factor, and average current sharing control is implemented for balanced parallel operation in three-phase dc-dc converters. By using this method, unbalance factor is maintained within 1%. Two 5kW battery test system are built and the proposed several control methods are verified through experiments.

Keywords

DC-DC power convertors; battery testers; power grids; AC regenerating capability; battery test system; grid currents; grid-connected battery test system; power 5 kW; three-phase bidirectional isolated interleaved dc-dc converters; three-phase inverter; Batteries; Bidirectional control; Clamps; Discharges (electric); Inverters; Vehicles; Voltage control; battery test system; interleaved; regeneration;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conference (ENERGYCON), 2014 IEEE International

Conference_Location

Cavtat

Type

conf

DOI

10.1109/ENERGYCON.2014.6850410

Filename

6850410