Seven-level cascade inverter with asymmetrical DC voltages

This study proposes a novel seven-level cascade inverter (SLCI) with asymmetrical DC voltages. The proposed SLCI consists of two full-bridge inverters, a DC–DC converter (DDC) and a DC power source. The DC power source is parallel connected to the high-voltage full-bridge inverter (HVFB). The DDC is...

Full description

Saved in:
Bibliographic Details
Published in:IET power electronics 2017-01, Vol.10 (1), p.112-119
Main Authors: Wu, Kuen-Der, Jou, Hurng-Liahng, Wu, Jinn-Chang, Su, Jyun-Yi
Format: Article
Language:English
Subjects:
asymmetrical DC voltages
Asymmetry
Cascades
dc power source
dc‐dc converter
DDC
Electric potential
full‐bridge inverters
Hardware
hardware prototype
high‐voltage full‐bridge inverter
HVFB
Inverters
invertors
low‐voltage full‐bridge inverter
LVFB
power circuit
Power sources
seven‐level cascade inverter
SLCI
Switching
Voltage
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study proposes a novel seven-level cascade inverter (SLCI) with asymmetrical DC voltages. The proposed SLCI consists of two full-bridge inverters, a DC–DC converter (DDC) and a DC power source. The DC power source is parallel connected to the high-voltage full-bridge inverter (HVFB). The DDC is used to create a DC voltage with half of the DC power source and connect to the low-voltage full-bridge inverter (LVFB). The HVFB is switching at low frequency, and the LVFB is switching at high frequency. The salient points of the proposed SLCI are that only one DC power source is required and no transformer is used. Therefore, the power circuit for the proposed SLCI is simplified. A hardware prototype is established in order to verify the functions of the proposed SLCI. The tested results show that the functions of the proposed SLCI are as expected.
ISSN:1755-4535
1755-4543
1755-4543
DOI:10.1049/iet-pel.2016.0293