787 electrical system - variable frequency generators?
So how is an aircraft electrical system like the 787 able to be powered by these large, variable frequency AC generators without a constant speed drive (CSD)? My understandings of AC electrics was that motors driven by AC power need stable frequency in order to operate properly and for longevity. Why do "relatively" modern aircraft like the 777 bother with the weight of complexity of constant speed drives (CSDs) and an aircraft like the 787 doesn't need CSDs?