•1970’s:
First ideas about AC-modules, but due to technical limitations
the idea was never put into practice.
•
•1980’s:
Professor Kleinkauf promotes the concept of AC modules emphasizing
the advantages of AC-modules (by then called module
integrated converters, MICs).
•
•1990’s:
First AC-modules inverters are developed and introduced on the
market (see paper AC
modules: past, present and future by Henk
Oldenkamp and Irene de Jong, 1998). The most successful AC-module
inverter was the OK4 produced by NKF.
•
•2000’s:
AC-modules disappear from the market mainly due to the (relatively)
high costs and failing AC-module inverters.