Project specificationsToo little / too much? In this post we talk about balancing the length and especially the content of project specifications. What is too little and what is too much? How to specify your requirements? Let us spend some 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 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 Read more…
#Energy efficiencyPart 3: Selection of VFD technology What type of VFD technology fits the best your demands? The answer depends mainly on your process and operation philosophy. Process dynamics Is your process very dynamic and fast response is required? Then Read more…
#Energy efficiency Part 2: Applications with energy saving potential What applications can benefit from variable frequency control the most? To help understand it we use some fundamental equations (don’t worry, there will be no high mathematics!). Mechanical power Pmech is Read more…
Reliability and availability (Part 2: MTBF) Let’s start with the mystery around MTBF (Mean Time Between Failures). You may disagree with me, but please give me a chance and read to the end before you make your mind. Many people Read more…
Reliability and availability (Part 1: Introduction) Reliability and availability are crucial characteristics of drive systems and every downtime negatively impacts the productivity and profitability of a plant. In this series we would like to walk through the topic, provide some Read more…
#Energy efficiency Part 1: Introduction Energy efficiency is a big topic that the society talks about. One reason is the increased awareness of the impact of human on the planet and effort to minimize this impact, other reason is purely Read more…
We go live! Welcome and thanks for visiting this site. We would like to bring some interesting articles from the world of variable frequency drives and drive systems as well as provide inspiration to think about. The idea is to Read more…