Wind turbines for high-speed winds using permanent magnet generator or PMA design. Optimized for stable, efficient power at higher RPM and wind conditions. . Aviation technology has developed designs to harness wind energy at high speeds. While wind is certainly a renewable source of energy, main problem with it is its erratic nature. We have solutions for all the main drivetrain concepts from direct drive to medium and high speed and we. . Usually wind turbines are classified by their mechanical power control, and further by their speed control. This purchase includes the generator with a built-in charge controller; the turbine blade set is sold separately as a two-for-one deal for USD 299. The most compact medium-speed solution available on the. .