Partial discharge investigations in laminated busbars

Sellah, Mahdi; Wecxsteen, Jean-Francois; Ait-Amar, S.; Roger, Daniel

doi:10.1109/icd.2018.8514581

Cited by 4 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, medium‐voltage cable accessories such as cable termination and cable joints were assumed to be utilised in PEC‐driven systems, and the accelerated ageing caused by PD have been analysed and reported [117]. Studies on the insulator design of laminated busbars that provide low‐inductance electrical connections and enable the operation of WBG power semiconductor at full‐capacity have also been reported [118]. Correlations between defects including protrusions, cracks, and cavities that may exist in the bulk of an electrical insulator or in the conductor‐dielectric interfaces and the likelihood of PD have been analysed [119].…”

Section: Insulation In Electrified Transportationmentioning

confidence: 99%

Insulating materials for realising carbon neutrality: Opportunities, remaining issues and challenges

Yang

et al. 2022

High Voltage

View full text Add to dashboard Cite

The 2050 carbon‐neutral vision spawns a novel energy structure revolution, and the construction of the future energy structure is based on equipment innovation. Insulating material, as the core of electrical power equipment and electrified transportation asset, faces unprecedented challenges and opportunities. The goal of carbon neutral and the urgent need for innovation in electric power equipment and electrification assets are first discussed. The engineering challenges constrained by the insulation system in future electric power equipment/devices and electrified transportation assets are investigated. Insulating materials, including intelligent insulating material, high thermal conductivity insulating material, high energy storage density insulating material, extreme environment resistant insulating material, and environmental‐friendly insulating material, are categorised with their scientific issues, opportunities and challenges under the goal of carbon neutrality being discussed. In the context of carbon neutrality, not only improves the understanding of the insulation problems from a macro level, that is, electrical power equipment and electrified transportation asset, but also offers opportunities, remaining issues and challenges from the insulating material level. It is hoped that this paper envisions the challenges regarding design and reliability of insulations in electrical equipment and electric vehicles in the context of policies towards carbon neutrality rules. The authors also hope that this paper can be helpful in future development and research of novel insulating materials, which promote the realisation of the carbon‐neutral vision.

show abstract

Section: Insulation In Electrified Transportationmentioning

confidence: 99%

Insulating materials for realising carbon neutrality: Opportunities, remaining issues and challenges

Yang

et al. 2022

High Voltage

View full text Add to dashboard Cite

show abstract

“…Apart from the low switching loss of SiC power devices, the main benefit of the proposed converter comes from the fourlevel structure to accommodate the 1.2 kV dc-link voltage. Firstly, the voltage step between every two layers of the laminated busbar and between every two levels of the output voltage is only 400 volts, which eases the partial discharge and insulation concerns on the busbars [29] and motor winding insulation [4] comparing to a two-level 800 V system. The fourlevel operation also leads to the power devices only switching at 400 V, rather than the full dc-link voltage of 1.2 kV, which eases the harsh requirement of the dc-link parasitic inductance comparing to the case of a two-level converter [30], [31] considering the high dv/dt of SiC devices.…”

Section: Features Of the Prototype And Potential Improvementsmentioning

confidence: 99%

A 1.2 kV 100 kW Four-level ANPC Inverter with SiC Power Modules and Capacitor Voltage Balance for EV Traction Applications

Wang

Laird

Yuan

et al. 2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

View full text Add to dashboard Cite

With the recent advances of Silicon Carbide (SiC) power devices and multilevel converter topologies, a combination of them can further push the performance boundaries of electric vehicle (EV) traction inverters while adapting to higher-voltage systems. Prospectively targeting a 1.2 kV dc-link for the nextgeneration EV powertrain, this paper presents the design and implementation of a 100 kW/1.2 kV three-phase inverter formed by a four-level active neutral point clamped (4L-ANPC) topology and full-SiC power modules. The built converter prototype is the first of its kind (1.2 kV+SiC+4L-ANPC), which is implemented by the commercial half-bridge SiC power modules and enabled by the latest voltage balancing technique based on redundant level modulation. The concept of the converter is validated with a built prototype in a 1 kV/8 kW downscaled rig.

show abstract

Laminated busbar PDIV improvement using a new varnish-based insulation technology with micro/nano fillers

Rahmouni,

Ait-Amar,

Duchesne

et al. 2023

2023 IEEE Electrical Insulation Conference (EIC)

View full text Add to dashboard Cite

Laminated Busbars (LBB) have proved to be the best solution for the design of power electronic devices operating at high power due to their low parasitic inductance and high current capabilities. As power electronic devices are becoming subjected to more and more severe operating conditions (due to electrification of aircrafts and SiC semiconductors development), innovative insulation solutions are needed to deal with Partial Discharges (PD) appearance in harsh conditions, like low pressure and high temperature. This paper presents a new varnish-based insulation technology as a low cost and more environmentally friendly solution for LBB insulation. Additionally, a theoretical study using electrostatic simulations backed with practical tests show different ways in which Partial Discharges Inception Voltage (PDIV) of a LBB sample can be improved using similar technologies like the addition of a certain quantity of varnish in critical areas. Furthermore, an investigation of further performance improvements using micro-nano fillers is presented. Such fillers include Alumina, Silica and hexagonal Boron Nitride. Improvements include high temperature resistance (up to 200°C), higher creepage distances and higher thermal conductivity.

show abstract

Partial discharge investigations in laminated busbars

Cited by 4 publications

References 11 publications

Insulating materials for realising carbon neutrality: Opportunities, remaining issues and challenges

Insulating materials for realising carbon neutrality: Opportunities, remaining issues and challenges

A 1.2 kV 100 kW Four-level ANPC Inverter with SiC Power Modules and Capacitor Voltage Balance for EV Traction Applications

Laminated busbar PDIV improvement using a new varnish-based insulation technology with micro/nano fillers

Contact Info

Product

Resources

About