Space-Charge Accumulation and Its Impact on High-Voltage Power Module Partial Discharge Under DC and PWM Waves: Testing and Modeling

Wang, Yalin; Ding, Yi; Yuan, Zhao; Peng, Hongwu; Wu, Jiandong; Yin, Yi; Han, Tao; Luo, Fang

doi:10.1109/tpel.2021.3072655

Cited by 65 publications

(12 citation statements)

References 24 publications

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“…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%

“…However, the increased rated voltage and temperature directly lead to greater pressure for the packaging insulating material [89]. The insulation in power electronic devices and systems endures complex coupled electrical, thermal, and mechanical stresses, which urges the prominent need for research on failure mechanisms and condition evaluation [90].…”

Section: Equipment Insulation Issues In Future Power Generation/trans...mentioning

confidence: 99%

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

Yang

et al. 2022

High Voltage

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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.

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Section: Insulating Materials In Inverter-fed Motorsmentioning

confidence: 99%

Section: Equipment Insulation Issues In Future Power Generation/trans...mentioning

confidence: 99%

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

Yang

et al. 2022

High Voltage

Self Cite

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“…As SiC MOSFET turn-on time shortens and operating voltage increases, dv/dt increases, resulting in extremely high transient overvoltages, which may cause partial discharges in the power module, thereby deteriorating the packaging insulation performance of the power module. Previous studies have proposed a partial discharge detection method under a square wave electric field based on the super-high-frequency (SHF)-down-mixing technology [24,25].…”

Section: Partial Discharge Testmentioning

confidence: 99%

Optimization Design of Packaging Insulation for Half-Bridge SiC MOSFET Power Module Based on Multi-Physics Simulation

Wang

Ding

et al. 2022

Energies

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With the development of power modules for high voltage, high temperature, and high power density, their size is becoming smaller, and the packaging insulation experiences higher electrical, thermal, and mechanical stress. Packaging insulation needs to meet the requirement that internal electric field, temperature, and mechanical stress should be as low as possible. Focusing on the coupling principles and optimization design among electrical, thermal, and mechanical stresses in the power module packaging insulation, a multi-objective optimization design method based on Spice circuit, finite element field numerical calculation, and multi-objective gray wolf optimizer (MOGWO) is proposed. The packaging insulation optimal design of a 1.2 kV SiC MOSFET half-bridge power module is presented. First, the high field conductivity characteristics of the substrate ceramic and encapsulation silicone of the packaging insulation material were tested at different temperatures and external field strengths, which provided the key insulation parameters for the calculation of electric field distribution. Secondly, according to the mutual coupling principles among electric–thermal–mechanical stress, the influence of packaging structure parameters on the electric field, temperature, and mechanical stress distribution of packaging insulation was studied by finite element calculation and combined with Spice circuit analysis. Finally, the MOGWO algorithm was used to optimize the electric field, temperature, and mechanical stress in the packaging insulation. The optimal structural parameters of the power module were used to fabricate the corresponding SiC MOSFET module. The fabricated module is compared with a commercial module by the double-pulse experiment and partial discharge experiment to verify the feasibility of the proposed design method.

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“…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%

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

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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.

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Space-Charge Accumulation and Its Impact on High-Voltage Power Module Partial Discharge Under DC and PWM Waves: Testing and Modeling

Cited by 65 publications

References 24 publications

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

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

Optimization Design of Packaging Insulation for Half-Bridge SiC MOSFET Power Module Based on Multi-Physics Simulation

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

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