文档介绍：Low Wind Speed Technology Phase II: Breakthrough in Power Electronics from
Silicon Carbide
Peregrine Power LLC
Project Description: monly used power semiconductors in power converters today are based on standard silicon technol-
ogy. These have numerous limitations that power electronics designers work around. Newer designs in wind turbine drive trains
will increasingly depend on such power converters to allow full power conversion and variable speed. Silicon carbide (SiC) has
much better performance characteristics, including:
• Lower resistance and conduction losses
• Faster and cleaner turn-on and turn-off characteristics
that result in much lower switching losses
• Much higher dielectric constant, which permits higher
voltage applications
• Much higher thermal conductivity
• Much higher operating temperatures (662°F [350°C]
or higher)
• Much greater ruggedness and reliability
• Positive feedback as to resistance, which automatically
causes current to be shared well among parallel SiC
dies to achieve higher currents.
This project will perform baseline characterization of SiC
chips to determine their operating characteristics. Based
on these data, some preliminary designs and cost estimates
will be developed to determine SiC’s potential impact on
wind turbine power converter designs, efficiency, and
operating costs. Finite element m