Spectrum of Corona Discharges and Electric Arcs in Air under Aeronautical Pressure Conditions

Article Engineering, Electrical & Electronic

Separation and Classification of Corona Discharges Under Low Pressures Based on Deep Learning Method

Moein Borghei et al.

Summary: This study develops a DenseNet model based on experimental data to separate and classify various sources of corona discharge under low-pressure conditions, providing the foundation for a dielectric online condition monitoring system.

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION (2022)

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Article Chemistry, Analytical

Measurement of Corona Discharges under Variable Geometry, Frequency and Pressure Environment

Pau Bas-Calopa et al.

Summary: This paper investigates the design of insulation systems for more electric aircrafts. Experimental and computational methods are used to determine the corona extinction voltage and discharge points in a sphere-to-plane electrode configuration. The results provide valuable data for aircraft electrical insulations and high-voltage hardware manufacturers.

SENSORS (2022)

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Review Chemistry, Analytical

Application of Image Sensors to Detect and Locate Electrical Discharges: A Review

Jordi-Roger Riba

Summary: This paper reviews and analyzes state-of-the-art image sensors for detecting partial discharges in insulation systems, discussing recent progress, research needs, and challenges in applying image sensors in this area. The potential applications of introducing image sensors to detect electrical discharges include high-voltage, medium-voltage, and low-voltage systems.

SENSORS (2022)

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Article Chemistry, Multidisciplinary

Using CMOS Image Sensors to Determine the Intensity of Electrical Discharges for Aircraft Applications

Jordi-Roger Riba et al.

Summary: The development of more electric and all electric aircrafts requires an increase in electric power and distribution voltage levels. This paper presents a method to detect, locate, and quantify the intensity of electrical discharges using image sensors, as well as evaluates a discharge severity indicator. The proposed method has been tested in a low-pressure chamber representative of aircraft applications.

APPLIED SCIENCES-BASEL (2022)

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Article Chemistry, Analytical

Corona Discharge Characteristics under Variable Frequency and Pressure Environments

Pau Bas-Calopa et al.

Summary: As more electric aircrafts (MEAs) are paving the path to all electric aircrafts (AEAs), the need for increased distribution voltage in high-operating frequencies and low-pressure environments poses new risks to insulation systems, requiring experimental analysis for safety and reliability assurance.

SENSORS (2021)

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Article Chemistry, Physical

Designing the Insulation System for Motors in Electrified Aircraft: Optimization, Partial Discharge Issues and Use of Advanced Materials

Robin Ramin et al.

Summary: Designing insulation systems for motors in electrical aircraft involves balancing efforts to maximize specific power and achieve high reliability, particularly in addressing the risk of partial discharges. The use of optimized or conservative design approaches can provide specified lifespan and potentially reduce the risk of partial discharges. Advanced, corona-resistant materials may be necessary to reach a higher level of reliability.

MATERIALS (2021)

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Article Engineering, Electrical & Electronic

State Recognition of Surface Discharges by Visible Images and Machine Learning

Zhe Yuan et al.

Summary: An intelligent state recognition method of surface discharge based on visible images and machine learning (ML) is proposed in this article, which achieved high efficiency and accuracy through establishing a visible image library and using supervised learning algorithms. The models based on chromatic features had higher accuracy for recognition, with artificial neural networks reaching an accuracy of 0.982.

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT (2021)

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Article Computer Science, Information Systems

Partial Discharges in Electrical Machines for the More Electric Aircraft-Part I: A Comprehensive Modeling Tool for the Characterization of Electric Drives Based on Fast Switching Semiconductors

Marco Pastura et al.

Summary: The market introduction of new power devices based on wide bandgap semiconductors has generated significant interest due to their superior properties, however, they may pose reliability challenges in electric drives due to high rates of voltage changes over time.

IEEE ACCESS (2021)

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Article Chemistry, Analytical