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…
New milestone reached: 100’000 views On Sunday, September 11, 2022 a new milestone was reached. MB Drive Services recorded 100’000 all-time views of our website. What started in January 2019 as a small “experiment” grew into a popular platform dedicated Read more…
What makes protection firing so brilliant? Protection firing, sometimes also called “firing through”, is a VFD protectionconcept used in some medium voltage drives. The principle is well described in its name:In case of a severe fault the VFD will turn Read more…
What is behind the recooling of electric rooms? VFDs generate certain heat load that is dissipated into the ambient. Despite the high efficiency of the VFD, there is some portion of losses that heats up the electric room where the Read more…
Cut your energy bill before it is too late! Electricity prices reach all time high in Europe and many industrial producers are under huge pressure. There is at least one thing that everyone can make, independent on the local government, Read more…
Variable Speed Motors – Which type suits the best? Electric variable speed drive system consists as minimum of a VFD and an electric motor. So the question is: Which motor type suits the best for variable speed control? As usual, Read more…
Bearing damage stopped at the source Preface This article was written by our partner Mark Gurney from 3Phi Reliability [1]. Mark is sharing his vast experience related to reliability aspects of VFD fed motors. The examples are from low voltage Read more…
Scalar control – What does it actually mean? Many times we see that the term ‘scalar control’ is used in incorrect way or being misinterpreted. In this article we will briefly discuss scalar control – what does it actually mean? Read more…
What is your favorite high-speed train? It is holiday time!! And holidays are linked with travelling. Do you travel by train? What is your favorite high-speed train? Let us know in the comment section. Train belong to one of the Read more…