Motor start with VFD Our experience shows that the VFD motor start is sometimes not fully understood. This post shall explain how motor start with VFD works, what are the main benefits and how does it compare to a direct Read more
Energy savings in pump systems: Case study 1 After introducing the way how energy and cost savings are calculated [1] we will demonstrate the theory on a real example from industrial practice. This article presents a case study of a Read more
Case study on energy savings in variable flow fan systems.
Acoustic noise level This post discusses the topic of noise generated by variable frequency drive system. We will talk about acoustic noise in applications utilizing VFD technology. To be precise we shall use terms of sound pressure level and sound Read more
Modern and historical public transportation in Pilsen Our excursion today leads us to Pilsen, Czech Republic. The city is located in western Bohemia. It was founded in 1295. The distance from Prague is about one hour. It is easily accessible Read more
How to calculate energy and cost savings Our series on energy efficiency continues. The need for more energy efficient systems emerges day by day driven by increasing environmental concerns. Today’s post will guide you through calculation of energy and cost Read more
Combined transformer Our recent post [1] walked the reader through the two main VFD transformer options: integrated transformer and external transformer. Today we will introduce a solution that aims to leverage on advantages of both solutions: combined transformer. The name Read more
Integrated versus external transformer Modern variable frequency drives offer two options: integrated transformer or external transformer. How do these options compare? Which one is a better choice? INTEGRATED TRANSFORMER EXTERNAL TRANSFORMER There is no general answer. Instead, it depends on Read more
VFD transformer rental This post provides a brief description of our service “VFD transformer rental”. You will learn what the service is about, how it works, what is the target application etc. The contact form is located in our section Read more
Electro-mechanical interaction:Growing trend of vibration issues We have observed numerous vibration issues associated with rotordynamics in variable frequency drive systems across the industries. The trend is growing and this shall be a warning sign. There are multiple reasons for this Read more