High-speed drives: VFD perspective In the introduction to high-speed drives [1] we have briefly described the design variants of semi high-speed and high-speed motors. The impact on construction of the motor is significant. High-speed motors can be quite different compared to the conventional machines. But how about the VFD? What 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…
LCI versus VSI:Part 3: Comparison Figure 1: LCI vs VSI In today’s column we continue our popular series ‘LCI vs VSI’ and look a bit closer at the differences between a load-commutated inverter (LCI) and voltage source inverter (VSI). 1. History and references The history of LCI started in mid Read more…