ZENIT Electric MotorDrive comparison

Direct drive

SEE WHAT CHANGES.

A geared electric drive and the ZENIT direct-drive concept, side by side.

Swipe across the animation to view the complete drive.

Comparison of a geared electric drive and the ZENIT direct-drive concept.

Battery, inverter and propeller are identical in both illustrations. Component sizes, rotational speeds and heat losses are schematic. Actual component selection depends on the application.

Download animation · MP4

Motor efficiency

TWO CURVES.
ONE DIFFERENCE.

The upper graph compares the two motors. The lower graph shows the gap between them at the same motor speed.

Schematic illustrationBased on the supplied sketch, not measured comparison data. No numerical speed or efficiency values are assigned.
01

Efficiency vs motor speed

  • ZENIT motor
  • Conventional motor

Efficiency · η

Schematic motor efficiency curvesZENIT reaches a high plateau early. The conventional motor curve rises more gradually and dips at high speed. No measured values are shown.
Low speedMotor speed · RPM →High speed
02

The efficiency difference

Δη = ηZENIT − ηconventional

Efficiency difference · Δη (same vertical scale as above)

Difference between the two schematic motor efficiency curvesAt each speed, the difference equals ZENIT efficiency minus conventional motor efficiency. The gap narrows as the curves approach and grows when the conventional curve dips. No measured values are shown.
Low speedMotor speed · RPM →High speed

A larger gap above means a higher curve here. The baseline represents equal efficiency.

These curves compare motor efficiency only; gearbox and other system losses are excluded. Actual efficiency depends on torque and operating conditions. View the ZENIT efficiency map.

View technical dataDiscuss your application