A study of the DC link capacitor selection for 250kW battery energy storage system

Author

Wei Yan ; Meek, Lindsay ; Nabavi, S.M.H. ; Abshar, Masoud

Author_Institution

Magellan Powertronics Pty Ltd., Perth, WA, Australia

fYear

2014

fDate

Sept. 28 2014-Oct. 1 2014

Firstpage

1

Lastpage

5

Abstract

Lithium-ion based battery energy storage systems have become promising energy storage system (ESS) due to a high efficiency and long life time. This paper studies the DC link capacitor selection for a 250kW ESS. The battery bank in an ESS needs a low ripple environment to extend the lifetime. For filtering the switching ripple on the DC bus, large electrolytic capacitors are needed to absorb the current ripple which leads to a bulky capacitor bank. If we can choose film capacitors instead, this problem can be solved. Moreover, film capacitors also have other advantages like longer life time and low equivalent series resistance (ESR). This paper shows some simulation results by PSIM to support the replacement.

Keywords

DC power transmission; battery storage plants; electrolytic capacitors; power capacitors; secondary cells; DC bus; DC link capacitor selection; ESR; ESS; PSIM; battery bank; bulky capacitor bank; current ripple; electrolytic capacitor; equivalent series resistance; film capacitor; lithium-ion based battery energy storage system; low ripple environment; power 250 kW; switching ripple filtering; Batteries; Capacitance; Capacitors; Educational institutions; Films; Inverters; Load´s Dynamics; Photovoltaic Systems; Solar Gate; Zero Export Control Equipment;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Conference (AUPEC), 2014 Australasian Universities

Conference_Location

Perth, WA

Type

conf

DOI

10.1109/AUPEC.2014.6966638

Filename

6966638