A new topology of switched capacitor circuit for the balance system of ultra-capacitor stacks

Author

Lu, Rengui ; Tian, Likun ; Zhu, Chunbo ; Yu, Haifang

Author_Institution

Sch. of Electr. Eng. & Autom., Harbin Inst. of Technol., Harbin

fYear

2008

fDate

3-5 Sept. 2008

Firstpage

1

Lastpage

5

Abstract

The quick equalization technology of ultra-capacitor stacks in series can protect ultra-capacitors and make full use of limited capacitance. Ultra-capacitorpsilas high specific power and charging current require a higher equalization speed. Therefore a method related with buck-boost conversion for switched capacitorspsila equalization was developed. The design method for circuit parameters and corresponding equalization control algorithm were introduced. The simulation and experiment show that this method with high precision can realize quick equalization and meet the demand of charging and discharging with high current.

Keywords

network topology; power convertors; supercapacitors; switched capacitor networks; balance system; buck-boost conversion; equalization control algorithm; switched capacitor circuit topology; ultra-capacitor stacks; Circuit simulation; Circuit topology; Diodes; Energy exchange; Energy storage; Hybrid electric vehicles; Supercapacitors; Switched capacitor circuits; Vehicle dynamics; Voltage; Buck-Boost conversion; Dynamic equalization; Electric bus; Switched capacitors; Ultra-capacitor;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference, 2008. VPPC '08. IEEE

Conference_Location

Harbin

Print_ISBN

978-1-4244-1848-0

Electronic_ISBN

978-1-4244-1849-7

Type

conf

DOI

10.1109/VPPC.2008.4677796

Filename

4677796