Comments by "kazedcat" (@kazedcat) on "The Gallium Nitride Revolutions" video.

LEGOS LEGOS LEGOS LEGOS LEGOS LEGOS LEGOS LEGOS LEGOS LEGOS LEGOS LEGOS
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They don't use DC motor. All Tesla drive motors are AC and their power inverter is one of the key technology on most of their products.
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@disadadi8958 If the sine wave is 10khz then a PWM of 1Mhz is more than enough. SiC could handle that.
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@disadadi8958 It is not that simple you can over built things. For example using 200A device for 100A application. Yes GaN has a better efficiency curve but you can brute force efficiency by climbing down the efficiency curve to match whatever is your efficiency target.
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@disadadi8958 People optimize for dollars per effective range. Currently GaN is not competitive in price even SiC is a pricier option with low cost EV using only power MOSFET. Tesla has invested a lot on SiC production to gain economies of scale. Someone needs to do the same on GaN to drive down the cost. SiC has the production advantage and the difference in efficiency does not out weigh the difference in cost.
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@disadadi8958 When industrial technology gains scale it becomes really hard to displace. Just look at Silicon. It becomes a humongous industry that any competitor becomes relegated to niche application. Even in EV application Silicon is still being utilized for power electronics even if GaN and SiC are so much better.
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Real capitalist only talk in terms of profit. Those other ideology likes to attach themselves to capitalism to stay relevant. He like to frame things in terms of cost, marketability, and returns. That is the capitalist way of talking.
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