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Are you desperate with your power bank?
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Are you desperate with your power bank?

Are you desperate with your power bank? Portable power bank is a practical solution to charge your phone, tablet, headset and other kind of small electronic devices or gadgets. A power bank is characterized by its nominal capacity, typically expressed in mAh (milli-Ampere-hours). For example 5’000 mAh, 10’000 mAh, 27’000 Read more

By admin, 2 weeksApril 9, 2026 ago
most common medium voltage VFD topologies in comparison
VFD basics

Most common medium voltage VFD topologies in comparison

Most common medium voltage VFD topologies in comparison Abstract Medium voltage drives consist of several topologies. While some of them are seldom found in industrial applications, others are very popular and create integral part of the portfolio of most global VFD manufacturers. In this article we look at the most Read more

By admin, 1 yearJanuary 4, 2025 ago
What is the time constant of a dc link
VFD basics

What is the time constant of a dc link?

What is the time constant of a dc link? Introduction Most commercially used variable frequency drives (VFD) belong to the category of indirect frequency converters. The AC power of a fix frequency (usually 50 or 60 Hz) is first rectified and then the DC signal is inverted into AC power Read more

By admin, 2 yearsAugust 17, 2024 ago
LCI versus VSI - Commercial comparison
LCI versus VSI

LCI versus VSI: Commercial comparison

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

By admin, 5 yearsApril 26, 2021 ago
LCI versus VSI technology - truth and myths
LCI versus VSI

Comparison of LCI versus VSI Technology: Myths and Truth

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

By admin, 5 yearsApril 10, 2021 ago
Current source inverter and voltage source inverter
VFD basics

Current source and voltage source inverter

Current source and voltage source inverter Current source and voltage source inverter are the two basic types of  indirect frequency converters. Therefore, it might be very interesting to describe and compare both types. This article can also be seen as an amendment to the LCI vs VSI series [1] that Read more

By admin, 6 yearsJuly 4, 2020 ago
LCI and VSI
LCI versus VSI

LCI vs VSI – Part 5 (60 MW benchmark)

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

By admin, 6 yearsJune 27, 2020 ago
LCI vs VSI
LCI versus VSI

LCI vs VSI – Part 4 (Comparison – continue)

#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

By admin, 6 yearsDecember 3, 2019 ago
LCI vs VSI
LCI versus VSI

LCI vs VSI – Part 3 (Comparison)

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

By admin, 7 yearsSeptember 13, 2019 ago
LCI vs VSI
LCI versus VSI

LCI vs VSI – Part 2

#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

By admin, 7 yearsDecember 2, 2018 ago

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