The Efficiency Determination with a Measurement Uncertainty of Energy-Efficient Rotating Electrical Machines Using Direct, Indirect, and Modified Back-to-Back Methods Based on Small-Scale Test Bench Measurement for Wind Turbines
摘要
The traceable efficiency determinations with measurement uncertainty (MU) values for wind turbines on test benches or in the fields are very crucial and are of great interest for evaluating the usability of wind energy. In this paper, initially, different procedures for efficiency determination of the machine are compared and their electrical, as well as mechanical quantities are evaluated. Finally, the efficiency determination for rotating asynchronous electrical machine with a focus on MU values on an innovative small-scale test bench with results similar to nacelle test benches for wind turbines is presented.