Brushless DC Motors for Transportation


Electric vehicles aren’t as new as you’d think. The first electric vehicle, a tricycle, was engineered in 1881 by French inventor Gustave Trouve. This was made possible by the creation of his electric motor, allowing Trouve to reduce the weight of motor components to obtain an impressive energy output.

Engineers since have spent years trying to improve electric vehicles. After all, they consume less fuel, resulting in lower greenhouse emissions and better gas mileage for drivers. Many of these attempts, especially those surrounding electric cars, focus extensively on trying to improve the batteries. But maybe it’s time to reflect on what made Trouve’s tricycle so revolutionary.

While better electric storage systems, batteries or fuel cells, should continue to be encompassed in an overall strategy for improving electric vehicles, there’s a big piece of the puzzle that’s only now coming into play: the motor.


Why Choose Brushless Motors for Transportation?

Brushless motors are lightweight, efficient, and durable. They weigh less than AC induction motors, and they are more efficient and durable than brushed DC motors. Induction motors require AC power and have more wiring which causes the motor to weigh more. The brushed motors have brushes that grind against conduits for operation. Over time, these brushes wear down, spark, and create dust inside the motor that causes it to deteriorate and stop working.
The brushless motor uses less wiring and removes the brushes to get rid of the sparking, dust, and failure. These design strengths are why brushless motors are the go to motor in transportation needs. Wally Rippel, Tesla’s Principal Power Electronics Engineer, predicts that DC brushless motors will continue to dominate the hybrid and coming plug-in hybrid markets.Based off the advantages of the brushless DC motor, that’s a very strong prediction.


Advantages of Brushless Motors

  • High torque to weight ratio
  • High torque per watt of power input
  • High reliability with low maintenance requirements
  • Extended lifespan of 10,000 hours
  • Removal of ionizing sparks from the commutator (ESD)
  • Decreased operational and mechanical noise
  • Near-elimination of electromagnetic interference (EMI)
  • Increased efficiency
  • Lighter weight


Where Are Brushless DC Motor Used in Transportation?

Today, brushless motors for transportation are used for more than just tricycles and cars. Brushless motors are found in electric vehicles, hybrid vehicles, and personal transporters. Some electric bicycles utilize brushless motors built directly into the wheel hub, with a stator fixed to the axle and magnets attached to and rotating with the wheel. The majority of electrically powered RC models use brushless motors as well thanks to their light weight.

  • Drones and UAVs
  • Electric bicycles
  • Electric skateboards
  • Electric scooters
  • Hoverboards
  • Ski propulsion
  • Kayaks
  • Boats
  • Rafts
  • Custom projects


KDE Direct | Brushless DC Motors for Transportation

Our brushless motors are found in electric and hybrid vehicles around the world. KDE Direct is a leader in transportation applications where speed needs to be varied, and torque needs to be controlled without sacrificing accuracy. When high performance and reliability are required, our brushless DC motors overcome the drawbacks associated with induction and brushed motors.

Engineered for heavy-duty bicycles, boats, drones, and other transportation applications, the KDE Direct brushless DC motor line features an operational lifespan of 10,000 hours. These motors employ electronic communication to ensure maintenance-free operation. Our team has also implemented ISO 9001 certification for our production facilities around the world. All of our products are RoHS (The Restriction of Hazardous Substances), WEEE (The Waste Electrical and Electronic Equipment Directive), and CE (European Conformity) compliant for industrial and commercial applications.

Contact KDE Direct ( for design inquiries and more information about our custom product capabilities.

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