Design challenges of wind turbine generators

This paper presents technical design and evaluation experience on wind turbine generator insulation under conditions of the turbine operation conditions. Today, roughly 99% of wind turbine generators are connected with power converters. Since over 70% of the installed turbines utilize wound rotor induction machines (referred to as double-fed induction generators DFIG), this paper will use the DFIG type generator as an example to present the design challenges for wind power generating applications as compared to traditional ones. Several special considerations and evaluation methods will be presented.