Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

# Analysis of the Influence of Calculation Parameters on the Design of the Gearbox of a High Power Wind Turbine

Version 1 : Received: 13 September 2023 / Approved: 14 September 2023 / Online: 14 September 2023 (07:11:18 CEST)

A peer-reviewed article of this Preprint also exists.

Rubio, F.; Llopis-Albert, C.; Pedrosa, A.M. Analysis of the Influence of Calculation Parameters on the Design of the Gearbox of a High-Power Wind Turbine. Mathematics 2023, 11, 4137. Rubio, F.; Llopis-Albert, C.; Pedrosa, A.M. Analysis of the Influence of Calculation Parameters on the Design of the Gearbox of a High-Power Wind Turbine. Mathematics 2023, 11, 4137.

## Abstract

As wind turbine power requirements have evolved from the order of kilowatts (kW) to the order of several megawatts (MW), wind turbine components have been subjected to more demanding and critical operating conditions. The wind turbine must cope with higher wind loads due to larger blade sizes, which are also time-varying and ultimately higher power levels. One of the challenges in the manufacture of high-power wind turbines lies in the gearbox and consists of achieving ever greater power density without compromising efficiency, i.e., greater load capacity with lower weight (and production cost) and reduced power losses. In this paper we will analyze the influence that certain design parameters have on the size and weight of the gearbox components and therefore of the gearbox itself. For this purpose, the theoretical model of the gearbox will be planned and the influence of calculation parameters on the gearbox design will be analyzed. The influence of material, modulus and tooth width on the size and weight of the gearbox will be observed. Critical stresses are also calculated. The goal is to prepare the theoretical basis for an optimization process that will result in a gearbox as compact as possible without compromising the service life of the components.

## Keywords

wind turbine; gearbox; calculation parameters; tooth width; weight; modulus; allowable stress at surface pressure; allowable stress at bending

## Subject

Engineering, Mechanical Engineering