Testing of Gear Transmission Units with Continual Variation of Transmission Ratio for WT-application

Abstract

A new design of gear transmission unit with continual variation of gear transmission ratio, for application in wind turbines (WT), has been developed. By variation of transmission ratio the speed of output shaft is 1500 rpm, constant independently of the wind speed. The article contains the presentation of a testing rig and the testing procedure of this design. The testing rig is based on back-to-back connection and power circulation and the testing procedure on simulation of the WT service conditions. The objective of testing process is identification of gearbox operating features and behavior, gearbox reliability and durability.