What is the difference between VFD and VDS? This article aims to answer one relatively simple question: What is the difference between VFD and VSD? As the question was raised again recently, we would like to deliver an understandable explanation. Let’s start with the abbreviations first to ensure that we Read more
How to choose a medium voltage VFD:Service network and reaction time From end user’s perspective the uptime of the plant is crucial. The cost of loss of production quickly exceeds the equipment cost of the VFD. Therefore, you need a strong partner to support you with any kind of technical Read more
VFD switching frequency The heart of every variable frequency drive (VFD) is the power semiconductor. By switching on and off in a proper modulation scheme the frequency conversion functionality is achieved. Let’s look at various aspects of VFD switching frequency. Switching frequency of medium voltage VFDs Having medium voltage VFD Read more
VFD software functionality In continuation of our series to guide users how to choose a medium voltage VFD this post talks about VFD software functionality. We live in a digital age and there is no doubt that software is very powerful. Don’t worry, we don’t gonna talk about Industry 4.0 Read more
Which one is your VFD hero? VFDs, together with their rotating partners (motors) perform lot of work behind the scene. As we already know, there are multiple VFD topologies available on the market. While they all fulfill the basic purpose, such as soft starting of the machine and speed or Read more
VFD versus gas turbine In this post we are going to compare two variable speed drive solutions: an electric drive consisting of a VFD and a motor and a gas turbine. Gas turbine is an internal combustion engine, i.e. an energy conversion device that converts energy stored in the fuel Read more
How to choose a medium voltage VFD:System integration As part of our series on how to choose a medium voltage VFD [1] we have another essential aspect to mention: System integration capability. What does it mean? How does the system integration look like? And most importantly: why does it even Read more
To Gear or not to Gear? “To Gear or not to Gear: That is the question!” Dear readers, it is April 1, the Fool Day. However, we are not going to fool you. Instead, we have just allowed ourselves to paraphrase the famous quote by Shakespeare from Hamlet, Act 3 Read more
It Is Webinar Time! Update: Dear visitors, Thank you for your interest. Please note that the webinars are not available anymore. We will consider making a new webinar series in the future. Feel free to contact us in case of any questions. Thank you for your understanding. With the spring Read more
4 types of VFD specifications We have already talked a bit about customer specifications and the implication on VFD design. Unfortunately, those who shall primarily receive the message, may not be readers of our blog. Not yet, at least. Anyway, in this post we will introduce 4 types of VFD Read more