Dual inverter space vector modulation with power balancing capability

Author

Grandi, Gabriele ; Ostojic, Darko

Author_Institution

Dept. of Electr. Eng., Univ. of Bologna, Bologna, Italy

fYear

2009

fDate

18-23 May 2009

Firstpage

721

Lastpage

728

Abstract

Dual two-level inverter topology is a simple structure capable to produce a multilevel voltage output equivalent to a 3-level inverter. Its modular structure consists of two standard two-level three-phase voltage source inverter (VSI) supplied by one or two DC sources. Known modulations cannot provide arbitrary power sharing between inverters in order to balance their dc voltages in case of two separate dc supplies. This paper proposes a new space vector modulation (SVM) technique for a dual two-level inverter which can provide load control of the two DC sources as well as multilevel voltage output. An original modulation algorithm has been introduced to regulate the dc-link voltages of each VSI according with the requirement of a control system, by means of a specialized space vector modulation. The proposed algorithm has been verified by experimental tests.

Keywords

PWM invertors; network topology; 3-level inverter; dual inverter space vector modulation; dual two-level inverter topology; modulation algorithm; power balancing capability; power sharing; two-level three-phase voltage source inverter; Batteries; Control systems; Inverters; Leg; Load flow control; Power transformer insulation; Support vector machines; Testing; Topology; Voltage control; Dual two-level inverter; power sharing; space vector modulation; three-level inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON 2009, EUROCON '09. IEEE

Conference_Location

St.-Petersburg

Print_ISBN

978-1-4244-3860-0

Electronic_ISBN

978-1-4244-3861-7

Type

conf

DOI

10.1109/EURCON.2009.5167713

Filename

5167713