Experimental results of a three-level four-wire unidirectional AC-DC-AC converter

Author

Alahuhtala, J. ; Tuusa, H.

Author_Institution

Tampere Univ. of Technol., Tampere, Finland

fYear

2010

fDate

21-24 June 2010

Firstpage

3080

Lastpage

3086

Abstract

This paper presents a unidirectional neutral-point-clamped three-level four-wire AC-DC-AC converter topology and studies how space vector modulation and vector control can be applied to the converter. It is shown that either the rectifier or inverter can utilize discontinuous modulation if the injected zero-sequence voltage is properly chosen and a method for balancing the partial DC-link voltages is presented. The analysis and proposed modulation method are verified with experimental results from 10 kVA rated prototype.

Keywords

AC-DC power convertors; DC-AC power convertors; invertors; rectifying circuits; apparent power 10 kVA; discontinuous modulation; inverter; neutral-point-clamped AC-DC-AC converter topology; partial DC-link voltage balancing; rectifier; space vector modulation; three-level four-wire unidirectional AC-DC-AC converter; vector control; zero-sequence voltage; Analog-digital conversion; Bridge circuits; Circuit topology; Power electronics; Prototypes; Pulse width modulation inverters; Rectifiers; Space technology; Switching converters; Voltage; DC-link balancing; discontinuous PWM; four-leg converter; space vector modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (IPEC), 2010 International

Conference_Location

Sapporo

Print_ISBN

978-1-4244-5394-8

Type

conf

DOI

10.1109/IPEC.2010.5543763

Filename

5543763