Experimental verification of a modular multilevel cascade inverter based on double-star bridge-cells (MMCI-DSBC)

Author

Thitichaiworakorn, Nuntawat ; Hagiwara, Makoto ; Akagi, Hirofumi

Author_Institution

Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan

fYear

2012

fDate

15-20 Sept. 2012

Firstpage

4196

Lastpage

4202

Abstract

This paper presents a modular multilevel cascade converter based on double-star bridge-cells (MMCC-DSBC), which is characterized by a cascade connection of multiple single-phase full-bridge PWM converter cells per leg. It is suitable for a wind turbine generation system with a permanent magnet synchronous generator, the frequency band of which ranges typically from 5 to 20 Hz. This paper discusses a wind turbine generation system based on the DSBC, revealing that the DSBC can achieve a grid connection with an arbitrary dc-link voltage. Moreover, the operating principles and the control method are described in this paper. The validity of the system is verified experimentally by using a 200-V 10-kW downscaled model.

Keywords

PWM invertors; PWM power convertors; machine control; permanent magnet generators; synchronous generators; wind turbines; MMCI-DSBC; arbitrary dc-link voltage; control method; double-star bridge-cells; frequency 5 Hz to 20 Hz; grid connection; modular multilevel cascade inverter; multiple single-phase full-bridge PWM converter cells; operating principles; permanent magnet synchronous generator; power 10 kW; voltage 200 V; wind turbine generation system; Capacitors; Generators; Inductors; Inverters; Pulse width modulation; Voltage control; Wind turbines; Grid connections; modular multilevel cascade inverters; wind turbine generation systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2012 IEEE

Conference_Location

Raleigh, NC

Print_ISBN

978-1-4673-0802-1

Electronic_ISBN

978-1-4673-0801-4

Type

conf

DOI

10.1109/ECCE.2012.6342253

Filename

6342253