4 ms·
In table 3* the study summarizes 4 categories of generator. Low speed Permanent Magnet PMSG Low speed Excited Synchronous EESG Mid to High speed Gea
by strainer 8y ago
In table 3* the study summarizes 4 categories of generator.
Low speed Permanent Magnet PMSG
Low speed Excited Synchronous EESG
Mid to High speed Geared PM PMSG
High speed Geared Induction DFIG
All these types are currently competitive in large wind turbine installations, with high PM content designs getting selected in quite a minority of cases, despite modest efficiency and maintenance bonuses, even at the current top end of generator scale ~8MW.
To get beyond 10MW generators advantages of PM are desired but are also lumbered by relative heaviness besides the price of rare earths. Superconducting Magnets do seem like the way upward then, if reliable 'super-cooling' can be achieved.
[*] https://www.sciencedirect.com/science/article/pii/S0301420717300077#t0015 https://www.sciencedirect.com/science/article/pii/S030142071...