Ecovert Wind Turbine
Delivering Smart Renewable Energy Machines that Ensure the Planet’s Future

EcoTork™: Low RPM Permanent Magnet (PM) Generators


Most renewable energy converters are tasked with absorbing relatively low density energy over a large area and converting it first into a usable mechanical motion, usually rotation, and then into electricity. Doing this efficiently and with longevity requires careful attention to many factors.

Traditional solutions:

Slow rotation, as in a wind turbine rotor, is normally geared up by more than 100x using a massive gearbox before coupling to the generator. This gear train adds weight, drag, complexity, cost and reliability issues to any system. In addition, most systems operate at a synchronous speed, further limiting the efficiency of the power conversion over a range of conditions.


Permanent magnet generators are gaining momentum as a key sub-system in this industry. Our EcoTork™ pm generator platform is scalable from 5kW to more than one MW output at very low RPM’s, making it the largest and broadest-range available. EcoTork’s modular approach and unique flux-path design allow us to cost-effectively build very large diameter pancake-style generator-alternators that perform at low speeds. Another benefit to the modular design is field serviceability, even atop an 80+ meter tower.

Features and Benefits of EcoTork™:

  • Modular design ensures a generator tailored to your application
  • High voltage output at slow speeds
  • Optimized materials usage for a cost-effective solution
  • Proprietary stator design offers off-the chart short circuit protection and thermal management properties
  • High efficiencies
  • Low cogging torque (torque ripple)

Do you have the need to efficiently convert slow-speed rotation (between 10 and 1000 RPM) into usable electricity? Please Discover more about the new wave of PM generators.

Do you offer raw materials technologies such as copper, superconductor materials, magnets, bearings, or potentially collaborative systems such as power switching electronics, transformers, or renewable energy mechanical systems? Please contact us.

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