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LUND UNIVERSITY LIBRARIES

Multi-level converter topologies for low voltage drives

Fjelner Collins, Max (2013)
Computer Science and Engineering (BSc)
Abstract
Inverters synthesizing output voltages consisting of two levels, commonly known as two-level inverters, have dominated the global market for a long time. Today, further emphasis is being put on inverter efficiency and power quality. One way of improving these aspects is to use an inverter synthesizing a staircase voltage waveform consisting of three or more levels. Such inverters are known as multi-level inverters. The thesis begins by pointing out key differences as well as advantages and disadvantages of two-level and multi-level inverters. The different multi-level inverter topologies are presented and the decision to further investigate the diode clamped inverter motivated. The diode clamped multi-level inverter and its related control... (More)
Inverters synthesizing output voltages consisting of two levels, commonly known as two-level inverters, have dominated the global market for a long time. Today, further emphasis is being put on inverter efficiency and power quality. One way of improving these aspects is to use an inverter synthesizing a staircase voltage waveform consisting of three or more levels. Such inverters are known as multi-level inverters. The thesis begins by pointing out key differences as well as advantages and disadvantages of two-level and multi-level inverters. The different multi-level inverter topologies are presented and the decision to further investigate the diode clamped inverter motivated. The diode clamped multi-level inverter and its related control circuit are discussed in detail. Then, simulations containing the two-level inverter and the diode clamped inverter are explained, carried out and eventually used to confirm the alleged advantages and disadvantages, and to show that the diode clamped inverter is more flexible, yielding both better inverter efficiency and power quality. Finally, cost, weight and space requirements of the two inverters are compared to provide a full comparison. (Less)
Please use this url to cite or link to this publication:
author
Fjelner Collins, Max
organization
year
type
M2 - Bachelor Degree
subject
keywords
multi-level, inverter, converter, low voltage, igbt, loss-estimation
language
English
id
3865353
date added to LUP
2013-06-20 03:39:20
date last changed
2018-10-18 10:26:40
@misc{3865353,
  abstract     = {Inverters synthesizing output voltages consisting of two levels, commonly known as two-level inverters, have dominated the global market for a long time. Today, further emphasis is being put on inverter efficiency and power quality. One way of improving these aspects is to use an inverter synthesizing a staircase voltage waveform consisting of three or more levels. Such inverters are known as multi-level inverters. The thesis begins by pointing out key differences as well as advantages and disadvantages of two-level and multi-level inverters. The different multi-level inverter topologies are presented and the decision to further investigate the diode clamped inverter motivated. The diode clamped multi-level inverter and its related control circuit are discussed in detail. Then, simulations containing the two-level inverter and the diode clamped inverter are explained, carried out and eventually used to confirm the alleged advantages and disadvantages, and to show that the diode clamped inverter is more flexible, yielding both better inverter efficiency and power quality. Finally, cost, weight and space requirements of the two inverters are compared to provide a full comparison.},
  author       = {Fjelner Collins, Max},
  keyword      = {multi-level,inverter,converter,low voltage,igbt,loss-estimation},
  language     = {eng},
  note         = {Student Paper},
  title        = {Multi-level converter topologies for low voltage drives},
  year         = {2013},
}