single ideal rotational speed where efficiency is at its peak.
Despite huge developments in materials science and metallurgy, today’s electric motors, whether they’re tiny or enormous, share that same exact basic design.
And with that design come limitations.
One of the biggest limitations is the efficiency curve. Every electric motor has a single ideal rotational speed where efficiency is at its peak.
It’s at that speed that the motor puts out the most torque for the energy invested. Spin it faster or slower, and the power-to-energy-invested ratio begins to drop off.
When this drop-off takes place, not only is energy lost to inefficiency but resistance and heat increase as well.
With added heat comes additional wear and tear and a shortened service life.
Engineers have been living with this limitation from the very beginning of the story of the electric motor.
They’ve invented transmissions to minimize the effects, but in the end, more add-ons only complicated the mechanism, adding yet more inefficiency to the overall system.
By precisely managing the flow of charge through an electric motor’s copper coil, engineers at a Calgary-based tech company are now generating efficiency levels that were unheard of just a few years back.
Motors equipped with this dynamic power management technology can produce more torque than ever before, across a wider spectrum of rotational rates than ever before.
How much more?
A recent demonstration involving an electric motorcycle yielded an astounding 25% gain in overall power delivery for the same amount of energy invested.
That’s free power for all intents and purposes. Now, imagine if every electric motor in the world were equipped with the same tech.
The total global savings in energy would be roughly equivalent to the total annual energy consumption of Brazil, or about 600 terawatts.
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