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 logical at first point is not necessarily right. Does it 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, EU commission etc: Reduce your energy consumption. In fact, you Read more…
How to measure VFD efficiency Energy efficiency is high on the agenda. VFDs are enablers on higher efficiency in drive systems, especially in flow control. However, how to deal with VFD efficiency? In particular, how to measure VFD efficiency and verify the figures provided by the manufacturer? There is a 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…
It is time to evaluate the energy and cost saving potential of VFD! We all read and hear it in the news daily now: The electricity and gas prices are going up sharply. Some people even talk about “energy crisis”. This phenomenon affects the households as well as industrial customers. Read more…
What makes electric drives superior? We are very passionate about VFDs and electric drives in general. They have some unique features that make them outstanding compared to other types of drivers. What are some of these properties? This post lists 8 reasons that make electric drives superior to their traditional Read more…
5 reasons why I love VFD Valentine’s Day is coming. We would like to take this opportunity and confess our love to variable frequency drives (VFD). Welcome to the article “5 reasons why I love VFD”. Don’t get me wrong. In private sphere we shall definitely take the opportunity and Read more…
VFD multidrives: Additional energy savings In our introduction [1] to VFD multidrives we have listed the key benefits of multidrive concept. One of them is improved energy efficiency. Now it is time to look into it closer and demonstrate that it is true. This article is about improved energy efficiency Read more…
Multidrives and their benefits Multidrive concept is a VFD solution where multiple motors are supplied and controlled from one VFD having several inverters connected to a common dc link. This concept has several advantages and is especially popular in certain applications, for instance rolling mill drives or specific test stands. Read more…
Sustainable drive systems throughout the entire life cycle Sustainability is a popular word in today’s dictionary. In our opinion this is very good as long as the efforts are sincere and it is not just marketing. Variable frequency drives (VFD) help reducing energy consumption, especially in variable flow applications such Read more…