2018 IEEE International Power Modulator and High Voltage Conference

Session

Oral 11 - Partial Discharges & Plasmas

11O

6 Jun 2018, 15:30

Explorers Room

40. Study of Partial Discharge Behavior at Flight-Altitude Pressures under 60 Hz and Impulse Voltages for Samples Related to Aircraft Motors

Zhuo Wei (The Ohio State University)

06/06/2018, 15:30

Lasers, X-Rays, EUV, Partial Discharge Testing, and Other Emitters

Oral Presentation

Partial discharge (PD) is a common and detrimental phenomenon that can cause damage, and eventual breakdown for insulation systems. Currently there are several standards for PD detection and measurement at atmospheric pressure, with power frequency (up to 400 Hz) excitation voltage. In a gaseous medium, such as air, the partial discharge inception voltage (PDIV) will generally decrease with...

117. Load Capacitance Effects on the Energy Mechanism and Severity of Series dc Arcs

Mr Eric Bauer (The Ohio State University)

06/06/2018, 15:45

Plasmas, Discharges, and Electromagnetic Phenomena

Oral Presentation

As the power demands increase for airplanes, heavy duty electric vehicles and data centers, their dc bus voltages are expected to increase. While this reduces cable weight and improves system efficiency, electric arcs become an increasingly dangerous fault condition. Arcs fall under two categories—in series or in parallel with a load. Parallel arcs release large amounts of energy as high and...

6. Type of supply waveform, partial discharge behavior and life of rotating machine insulation systems

Prof. Gian Carlo Montanari (University of Bologna, University of Texas), Dr Paolo Seri (University of Bologna)

06/06/2018, 16:00

Dielectrics, Insulation, and Breakdown

Oral Presentation

It has been ascertained already, without doubts, that feeding rotating machines by power electronics drives can cause accelerated degradation and premature breakdown of electrical insulation. This is due to various factors, but the predominant one is the inception of partial discharges, PD, which are not expected to occur in Type I (organic) insulation, or the abnormal growth of PD (in...

53. Plasma Surface Modification for High Voltage Insulation Improvement

Tao Shao (Institute of Electrical Engineering, Chinese Academy of Sciences)

06/06/2018, 16:15

Plasmas, Discharges, and Electromagnetic Phenomena

Oral Presentation

In recent years, with the development of higher voltage and larger capacity of electrical equipment, the improvements of electrical insulation performance for various materials are urgent. The present investigations indicate that the characteristics of material surface, such as adhesion, hydrophilicity, charge accumulation, hardness, can be enhanced by surface modification including direct...

54. The Spatial-temporal Evolution and Interaction of 3-D Multiple Pulsed Plasma Jets

Prof. Ruixue Wang (Institute of Electrical Engineering, Chinese Academy of Sciences)

06/06/2018, 16:30

Plasmas, Discharges, and Electromagnetic Phenomena

Oral Presentation

Pulsed plasma jet with the advantages of compact size, low coat, abundant reactive species and flexibility have been a hot spot in recent years. The application of pulsed plasma including surface modification, medical application and environmental protection, etc. Especially, by grouping individual plasma jets together, large area and abnormal shape subjects can be easily treated. In this...

216. INVESTIGATION ON INITIATION AND DEVELOPMENT OF VACUUM FLASHOVER ACROSS SOLID INSULATION

Prof. Guan-Jun Zhang (Xi'an Jiaotong University)

06/06/2018, 16:45

Oral Presentation

Guan-Jun Zhang, Run-Dong Zhou, Guang-Yu Sun, Bao-Hong Guo, Bai-Peng Song, Zheng-Shi Chang, Hai-Bao Mu
State Key Laboratory of Electrical Insulation and Power Equipment,
School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China

Surface flashover across solid insulation in vacuum is a great limitation of many electrical and electronic systems, since it typically...

276. Secondary electron emission yield from surface-architectured materials

Yevgeny Raitses (Princeton Plasma Physics Laboratory)

06/06/2018, 17:00

Plasmas, Discharges, and Electromagnetic Phenomena

Poster Presentation

The plasma electrons bombarding a plasma-facing wall surface can induce secondary electron emission (SEE) from the wall. A strong SEE can enhance the power losses by reducing the wall sheath potential and thereby increasing the electron flux from the plasma to the wall. The use of the materials with surface roughness and the engineered materials with surface architecture is known to reduce the...