Scaled Testing for Wind Turbine Drivetrains: State of the art and recent developments

As wind turbine drivetrains grow in scale and complexity, the practice of full-scale testing has become expensive and logistically demanding. These challenges are inducing a significant shift in the wind energy industry, potentially propelling scaled testing from a specialized academic pursuit into a widely adopted method. While scaled testing has a well-established history in the analysis of the structural integrity of wind turbine components and the aerodynamic performance, its application to drivetrain systems is a recent but expanding field. This paper reviews state-of-the-art scaled testing methods for wind turbine drivetrain components. It addresses recent developments, and the ongoing efforts of standardized scaled testing methods for wind turbine drivetrains. Considering the research and case studies presented in this paper, it is projected that scaled testing will become an integral and essential part of the design, validation, and optimization processes for future wind turbine drivetrain systems.