Optimizing capacitance in SPWM converter/inverter for series hybrid electric bus systems

Author

Lu, Xi ; Cha, Honnyong ; Peng, Fang Z.

Author_Institution

Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA

fYear

2009

fDate

7-10 Sept. 2009

Firstpage

852

Lastpage

858

Abstract

An accurate theory of calculating the DC link capacitor voltage ripple and current ripple for SPWM inverters and PWM rectifiers, which are most commonly used in series hybrid electric bus (SHEB) converter/inverter systems at low speed, is presented in the paper. Most of all, the results are analyzed and summarized into graphs, which helps to find the right capacitance value for a given voltage ripple tolerance and the rms ripple current that the capacitor has to absorb. An inverter prototype is built and experimental results are demonstrated to verify the theoretical calculation.

Keywords

PWM invertors; PWM power convertors; PWM rectifiers; hybrid electric vehicles; DC link capacitor current ripple; DC link capacitor voltage ripple; PWM rectifier; SPWM converter-inverter system; rms ripple current; series hybrid electric bus system; voltage ripple tolerance; Capacitance; Capacitors; Computer aided manufacturing; Power electronics; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Traction motors; Voltage; DC capacitance; Optimizing; current ripple; pulse width modulated power converter; series hybrid electric bus; voltage ripple;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference, 2009. VPPC '09. IEEE

Conference_Location

Dearborn, MI

Print_ISBN

978-1-4244-2600-3

Electronic_ISBN

978-1-4244-2601-0

Type

conf

DOI

10.1109/VPPC.2009.5289759

Filename

5289759