Electric and Thermal Stress Analysis of a HV Insulation System Acc. to IEC 60034-18-42 for a Hydro Generator with Different Inverter Technologies
This paper investigates the aging behavior and lifetime performance of full-size stator and rotor bars subjected to realistic inverter voltage stress. A dedicated high-voltage test setup combining an AC transformer and a bipolar square-wave generator is used to simulate voltage waveforms representative of modern invert...