LCI celebrates 50 years anniversary! It is little bit hard to believe but the high-power drive champion LCI celebrates 50 years anniversary in 2024. We take this opportunity to look back at the history of this matador and maybe also a little outlook. Birth of LCI in 1974 It was Read more…
LCI versus VSI Technology: Commercial Comparison In our LCI versus VSI series of articles we have intensively discussed the technical aspects and performance of both high-power drive technologies. Based on your feedback you are interested in a commercial comparison as well. Therefore we decided to write this post on LCI Read more…
Comparison of LCI versus VSI Technology: Myths and Truth We have already discussed the comparison of LCI versus VSI technology quite in detail [1]. However, there is an article [2] in the Internet making a similar comparison of above VFD platforms. Unfortunately, in that article, there are certain statements that Read more…
Best VFD topology: One size fit all? If you deal with variable frequency drives (VFD) you have certainly asked yourself the question: What is the best VFD topology? Why do the big brands have several different products in their portfolio? And is there anything like one size fit all? Does Read more…
LCI versus VSI:60 MW case study Introduction In this post we share some results of a case study comparing load-commutated inverter (LCI) and voltage source inverter (VSI) for a 60 MW variable speed drive system. Due to confidentiality some quantities are only presented as relative values in percentage instead of Read more…
#LCI versus VSI:Part 4: Comparison (continue) Our series LCI versus VSI belongs to some of the most popular in this blog. We talk about the main medium voltage high power VFD technologies, Load-commutated Inverter (LCI) and Voltage Source Inverter (VSI), and compare them in various aspects. This post is a Read more…
LCI versus VSI:Part 3: Comparison Figure 1: LCI vs VSI In today’s column we continue our popular series ‘LCI vs VSI’ and look a bit closer at the differences between a load-commutated inverter (LCI) and voltage source inverter (VSI). 1. History and references The history of LCI started in mid Read more…
#LCI versus VSIPart 2: Truth and lies about LCI and VSI We continue our series about the high power drive champions LCI and VSI. The introduction [1] last time was a bit longer, but the goal was to provide a good and unbiased overview. There is quite some material regarding Read more…
LCI versus VSIPart 1: Introduction LCI (load-commutated inverter) and VSI (voltage source inverter) are the dominant technologies when it comes to high power medium voltage drives. Each technology has certain advantages as well as drawbacks. Project specific conditions and requirements shall be analyzed before deciding for LCI or VSI. Let’s Read more…