Partial Discharge Behaviors in Power Modules Under Square Pulses With Ultrafast <i>dv/dt</i>

You, Haoyang; Wei, Zhuo; Hu, Boxue; Zhao, Zheng; Na, Risha; Wang, Jin

doi:10.1109/tpel.2020.3014043

Cited by 53 publications

(12 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pablo Gómez and M. Khalil Hussain from Western Michigan University, USA have developed some motor simulation models under PWM waveforms [134]. Jiandong Wu group of Shanghai Jiaotong University and the international group of Haoyang you from Ohio State University, USA have presented discharge phenomena under DC and PWM waveforms [135,136]. T. Lebey from LAPLACE lab of Toulouse University, France has presented PD detection in motor winding under different pressure [137].…”

Section: Insulating Materials In Inverter-fed Motorsmentioning

confidence: 99%

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

Yang

et al. 2022

High Voltage

118

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: Insulating Materials In Inverter-fed Motorsmentioning

confidence: 99%

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

Yang

et al. 2022

High Voltage

118

View full text Add to dashboard Cite

show abstract

“…Substituting Equation (10) into Equations ( 4) and ( 5), the electric field intensity under the PPSW voltage also can be expressed as…”

Section: Establishment Of the Theoretical Modelmentioning

confidence: 99%

“…The analytical expression of the transient electric field intensity and the interfacial charge density of the model under the PPSW voltage are obtained in Equations ( 4), (5), and (10). However, it may be difficult to intuitively recognise its transient characteristics from the analytical expression.…”

Section: Transient Characteristics Of the Electric Field Intensity An...mentioning

confidence: 99%

“…The extensive application of the PPSW voltage has attracted attention of many researchers. In experimental studies, extensive efforts have been made to obtain the partial discharge characteristics of power electronics [9,10], the surface charge characteristics [11][12][13], the streamer characteristics [14], accumulation and dissipation of the space charge characteristics [15,16] of engineering insulation materials. Significant progress has been achieved to investigate the dependence of waveform parameters of the PPSW voltage on space charge accumulation characteristics [17], partial discharge characteristics [18], surface discharge characteristics [19], and electric tree characteristics [20,21] of insulation materials.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Transient electric field of the combined insulation structure under positive periodic square waveform voltage: Analytical analysis and application

Wen

Cui

et al. 2022

High Voltage

View full text Add to dashboard Cite

The working voltage of the high‐voltage high‐power electronic devices is the positive periodic square waveform (PPSW) voltage, which is much different from the conventional AC or DC voltage. For the composite insulation structure of devices, it is important to analyse the transient electric field under the PPSW voltage. However, the existing investigations are often conducted under the electrostatic field due to the high frequency of the PPSW voltage. Thus, the transient characteristics of the electric field are missed. To obtain some qualitative conclusions, this paper focusses on the theoretical analysis of the transient characteristics of electric field for the composite insulation structure under the PPSW voltage. First, the formula of the electric field intensity and the interfacial charge density are derived analytically. Second, the influence of the cycle and the duty cycle on the transient characteristics are investigated. Third, the maximum of the electric field intensity and the interfacial charge density in the positive square waveform steady‐state are discussed in detail. Besides, the engineering calculation methods for obtaining these maximum values are also suggested. Lastly, an actual model is employed to testify the validity of the analytical analysis. This work is significant for the numerical calculation of the transient electric field of composite insulation structure under the PPSW voltage in engineering.

show abstract

“…An overvoltage is created during the switching operation of inverters. Partial discharges may occur during such repetitive overvoltage whose detection can be helpful in evaluating the insulation system [20]. At atmospheric pressure, the discharge pulse has a risetime of a few nanoseconds.…”

Section: Introductionmentioning

confidence: 99%

Partial discharge detection and identification at low air pressure in noisy environment

2021

View full text Add to dashboard Cite

Increasing demand for electric power in more electric aircraft requires a higher operating voltage for the power system that leads to higher electric stress on the insulation system. Operating at high altitudes where the electrical strength of air is weakened exposes the insulation system to even higher levels of electrical stress. As such, the probability of partial discharges (PD), which result in insulation degradation and failure, is higher. The presence of switching circuits in the power distribution system of the more electric aircraft is capable of producing high levels of noise. This noise in combination with the background noise and parasitic impedances will cause high amplitude ringing in the measured partial discharge signal waveform. Here, a method based on the combination of the wavelet and energy techniques is employed to detect PD pulses in a noisy environment under the low air pressure condition. To verify the technique, a laboratory setup consisting of two separate PD sources mounted in low air pressure (33 kPa) chamber is developed where sine and square waveforms are used as the applied voltage. The obtained results demonstrate that the proposed approach offers low computational complexity, high performance in PD phase localization, and robustness in a noisy environment.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Partial Discharge Behaviors in Power Modules Under Square Pulses With Ultrafast dv/dt

Cited by 53 publications

References 32 publications

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

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

Transient electric field of the combined insulation structure under positive periodic square waveform voltage: Analytical analysis and application

Partial discharge detection and identification at low air pressure in noisy environment

Contact Info

Product

Resources

About