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
What VFD properties matter the most to you? Medium voltage VFD is often a long term investment. The expected lifetime is typically at least 20 years. Thus, it is important to make the right choice when purchasing it. That is Read more