Why do larger drives achieve better efficiency? How does the efficiency of a drive system scale with the power? And why do larger drives achieve better efficiency? That is the subject of this blog post. What is efficiency Efficiency is Read more…
What types of VFD grid connection exist? How is the VFD connected to the supplying grid? There are several ways. In this post we look at the conventional ones as well as more specific solutions regarding variants of VFD grid Read more…
Cable or busbar? Which one is better? In this article we will have a closer look at the two common power connections in drive systems. Is cable or busbar more suitable? The answer depends on several factors. Power connections 1. Read more…
Special offer for our premium subscription, webinars and trainings No Black Friday this year. We have something much better: Our special offer on premium plans, training courses and webinars combined with humanitarian aid. Purchase one of our premium subscription plans, Read more…
309 days on site! 309 days…that is exactly how long our rental transformer was on site. This example illustrates the importance of a backup solution when you experience fault of a VFD transformer. It was the beginning of December 2021 Read more…
SFC for Power from Shore application In this post we will describe a specific type of SFC grid intertie: Power from Shore (PfS) application. First we explain the background and motivation for the electrification of offshore platforms. Following the introduction Read more…
SFC as Grid Intertie VFD hardware can be used for other applications as well. One of them is SFC used as grid intertie, i.e. interconnection of two grids with different frequency and sometimes also different number of phases. Let’s explore Read more…
My experience with renewable energy The energy prices in Europe are currently exploding. We hear it in the media daily. We may already be tired of it. Angry. Desperate. This post shall not provocate. Instead, I d’ like to share Read more…
VFDs and conventional wisdom Welcome to our blog about variable frequency drives and drive systems. This time on the topic: VFDs and conventional wisdom. The message we try to convey is that what many people usually believe and what seems Read more…
Finding an optimum field weakening point Motors supplied from variable frequency drives (VFD) have the freedom to set the field weakening point almost arbitrarily. By doing that you can optimize the drive system. The message of this article is how Read more…