Title :
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
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;
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
DOI :
10.1109/IPEC.2010.5543763
