PD-Free Design of Insulation Systems: An Application to Laminated Busbars
The reliability of components of industrial electrical assets fed by power electronics might be at risk due to the type and extent of electrothermal stresses. The move of power electronics toward higher levels of voltage, switching frequency, slew rate, and specific power increases the risk of parti...
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MDPI AG
2024-11-01
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| author | Gian Carlo Montanari Pasquale Cambareri |
| author_facet | Gian Carlo Montanari Pasquale Cambareri |
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| description | The reliability of components of industrial electrical assets fed by power electronics might be at risk due to the type and extent of electrothermal stresses. The move of power electronics toward higher levels of voltage, switching frequency, slew rate, and specific power increases the risk of partial discharge inception and thus of accelerated extrinsic aging and premature failure. The reaction to this challenge is to embrace the concept of partial discharge-free (PD-free) design and operation. This paper presents a PD-free approach to the design of laminated busbars, considering both AC and DC insulation subsystems, and focusing on surface insulation. The availability of a recently proposed model to estimate the inception field is a key tool. The model is validated through PD measurements performed on a laminated busbar, using new automatic software that can identify the type of source generating PD. Combined with electric field calculations, the model provides estimates of the PD inception voltage which are almost coincident with the measurement results. Inception voltages in the order of 10 kV and 20 kV have been observed for AC and DC excitation, respectively. In the case of DC supply, tests at different ambient temperatures, 25 °C and 60 °C, indicate that the inception voltage does not change significantly with temperature. Disposability, scalability to any voltage/power, and capability to work, potentially, for any other type of insulation system, are interesting features of the proposed approach, which are discussed in the paper. |
| format | Article |
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| institution | Kabale University |
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| language | English |
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| spelling | doaj-art-0ef0af62cdbc42af917fe76c8f94cc5d2024-11-26T17:47:45ZengMDPI AGApplied Sciences2076-34172024-11-0114221017110.3390/app142210171PD-Free Design of Insulation Systems: An Application to Laminated BusbarsGian Carlo Montanari0Pasquale Cambareri1Center for Advanced Power Systems, Florida State University, Tallahassee, FL 32310, USAEdward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON M5S 3G4, CanadaThe reliability of components of industrial electrical assets fed by power electronics might be at risk due to the type and extent of electrothermal stresses. The move of power electronics toward higher levels of voltage, switching frequency, slew rate, and specific power increases the risk of partial discharge inception and thus of accelerated extrinsic aging and premature failure. The reaction to this challenge is to embrace the concept of partial discharge-free (PD-free) design and operation. This paper presents a PD-free approach to the design of laminated busbars, considering both AC and DC insulation subsystems, and focusing on surface insulation. The availability of a recently proposed model to estimate the inception field is a key tool. The model is validated through PD measurements performed on a laminated busbar, using new automatic software that can identify the type of source generating PD. Combined with electric field calculations, the model provides estimates of the PD inception voltage which are almost coincident with the measurement results. Inception voltages in the order of 10 kV and 20 kV have been observed for AC and DC excitation, respectively. In the case of DC supply, tests at different ambient temperatures, 25 °C and 60 °C, indicate that the inception voltage does not change significantly with temperature. Disposability, scalability to any voltage/power, and capability to work, potentially, for any other type of insulation system, are interesting features of the proposed approach, which are discussed in the paper.https://www.mdpi.com/2076-3417/14/22/10171high power densityAC and DC medium voltagesurface insulationpartial dischargeslaminated busbars |
| spellingShingle | Gian Carlo Montanari Pasquale Cambareri PD-Free Design of Insulation Systems: An Application to Laminated Busbars Applied Sciences high power density AC and DC medium voltage surface insulation partial discharges laminated busbars |
| title | PD-Free Design of Insulation Systems: An Application to Laminated Busbars |
| title_full | PD-Free Design of Insulation Systems: An Application to Laminated Busbars |
| title_fullStr | PD-Free Design of Insulation Systems: An Application to Laminated Busbars |
| title_full_unstemmed | PD-Free Design of Insulation Systems: An Application to Laminated Busbars |
| title_short | PD-Free Design of Insulation Systems: An Application to Laminated Busbars |
| title_sort | pd free design of insulation systems an application to laminated busbars |
| topic | high power density AC and DC medium voltage surface insulation partial discharges laminated busbars |
| url | https://www.mdpi.com/2076-3417/14/22/10171 |
| work_keys_str_mv | AT giancarlomontanari pdfreedesignofinsulationsystemsanapplicationtolaminatedbusbars AT pasqualecambareri pdfreedesignofinsulationsystemsanapplicationtolaminatedbusbars |