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…
How to compare efficiency figures of drive systems? Just two important reminders before starting with the topic: 1) Always keep in mind that the energy savings come due to variable speed control. The load consumes significantly lower power when the speed is reduced and the process is such that it Read more…
How to choose a medium voltage VFD:Life cycle cost What is life cycle cost (LCC)? The definition from business dictionary (www.businessdictionary.com) says: Sum of all recurring and one-time (non-recurring) costs over the full life span or a specified period of a good, service, structure, or system. In includes purchase price, Read more…
How to choose a medium voltage VFD: Cooling type This post looks into drive classification according to cooling. Same as for instance electric motors also VFDs can be divided in two main groups with regards to VFD cooling type: Air cooled drives Liquid cooled drives Air cooling is known for Read more…