Suggesting a DC-DC Buck converter for compensating shaft induced voltage and bearing current

This paper proposes a complete distributed model for investigating both the induced shaft voltage and bearing current in turbo generators due to the interaction with their static excitation systems. This affects the insulations gradually, leading to a possible electrical discharge current when the shaft voltage exceeds the dielectric breakdown voltage level of the lubricating grease film in journal bearings. Furthermore, a buck converter is proposed to overcome the stated issue, where simulations confirm the effectiveness of the proposals.