Toyota's new silicon carbide (SiC) power semiconductor
- Thread starter myzter
- Start date
Classic confusion of absolute and relative percentages...
Assuming the inverter to be, say, 95% efficient to start with, 10% improvement is 10% of 5%, or 95.5% total. 10% relative improvement, 0.5% absolute improvement.
I suppose every little helps!
Assuming the inverter to be, say, 95% efficient to start with, 10% improvement is 10% of 5%, or 95.5% total. 10% relative improvement, 0.5% absolute improvement.
I suppose every little helps!
If they use a full Sic module (not only the diode) the benefit can be as much as reducing losses in half in the inverter. The idea is the switching losses are heavily diminished, which allows two things: either be happy with lower inverter losses, or boost inverter frequency up to equivalent losses as silicon-IGBTs and take advantage of the higher switching frequency to optimise a lower losses motor. Overall, for an app I know quite well we're going up around 1.5% efficiency system-wide.
Likely it's not Toyota Mos, it's probably Mitsubishi or Infineon, Cree, ST... Check out Denso, it's Toyota's one of power electronic builder and they may give more details.
Likely it's not Toyota Mos, it's probably Mitsubishi or Infineon, Cree, ST... Check out Denso, it's Toyota's one of power electronic builder and they may give more details.
LockH
1 PW
"Toyota to Trial New SiC Power Semiconductor Technology":
http://evnewsreport.com/toyota-trial-new-sic-power-semiconductor-technology/27879/
Includes:
"At present, power semiconductors account for approximately 20 percent of a vehicle’s total electrical losses, meaning that raising the efficiency of the power semiconductors is a promising way to increase powertrain efficiency.
By comparison with existing silicon power semiconductors, the newly developed high quality silicon carbide (SiC) power semiconductors create less resistance when electricity flows through them. The technologies behind these SiC power semiconductors were developed jointly by Toyota, Denso Corporation, and Toyota Central R&D Labs., Inc. as part of the results of a broader R&D project* in Japan."
http://evnewsreport.com/toyota-trial-new-sic-power-semiconductor-technology/27879/
Includes:
"At present, power semiconductors account for approximately 20 percent of a vehicle’s total electrical losses, meaning that raising the efficiency of the power semiconductors is a promising way to increase powertrain efficiency.
By comparison with existing silicon power semiconductors, the newly developed high quality silicon carbide (SiC) power semiconductors create less resistance when electricity flows through them. The technologies behind these SiC power semiconductors were developed jointly by Toyota, Denso Corporation, and Toyota Central R&D Labs., Inc. as part of the results of a broader R&D project* in Japan."
