Electric motor design claims remarkable improvements
Feel free to educate me...<p>&gt; The HET is a three-dimensional, circumferential flux, exterior<p>&gt; permanent magnet electric motor with some interesting<p>&gt; characteristics. For starters, it runs four rotors where other motors<p>&gt; typically run one or two. The stator is fully encapsulated in a four<p>&gt; sided &quot;magnetic torque tunnel,&quot; each side having the same polarity,<p>&gt; ensuring that all magnetic fields are in the direction of motion, and<p>&gt; there are no unused ends on the copper coils wasting energy. All<p>&gt; magnetism the system creates is thus used to create motion, and all<p>&gt; four sides of the stator contribute torque to the output.<p>I&#x27;m not so sure about the idea that &quot;unused ends&quot; are &quot;wasting energy&quot;. Simply put your finger on a small spinning motor and watch the current go up - increase the work done, increase the power usage. Typical losses in magnetic motors are:<p>1. Friction - Bearings, brushes, etc<p>2. Air - Typically cooling<p>3. Core - Hysteresis (changing polarity is not possible instantly) and eddy current losses (unwanted current flow)<p>4. Resistance - The coils themselves resist high current<p>Brushless motors are typically 85-90% efficient and brushed typically reach 75-80% efficiency [1]. Reducing the size a little, sure, but increasing the torque - I highly doubt for the same power input. I&#x27;m sure we will get to 95% efficiency within the next 10 years or so (with big money from the automotive industry pushing research), but it&#x27;s highly unlikely we will get more than that outside of the a lab with super-cooled conductors.<p>Which is the other thing, increasing the amount of torque and reducing the size means greater heat generation. Any saving in size you&#x27;re getting gets lost again just keeping the motor cool.<p>Anyway, the promises don&#x27;t pass basic scrutiny, I would definitely need to see some numbers on this. It sounds like snake oil.<p>EDIT: Another thing - electric motors are already very efficient, you&#x27;re getting more loss in other parts, such as voltage regulators, motor control circuitry, batteries (if you&#x27;re using them), cooling, etc, etc. I just don&#x27;t think this will translate to a massive improvement.<p>[1] <a href="http:&#x2F;&#x2F;dronenodes.com&#x2F;drone-motors-brushless-guide&#x2F;" rel="nofollow">http:&#x2F;&#x2F;dronenodes.com&#x2F;drone-motors-brushless-guide&#x2F;</a>