Electric Discharge and Breakdown
| Numbering Code | U-ENG26 36031 LJ72 | Year/Term | 2022 ・ First semester | |
|---|---|---|---|---|
| Number of Credits | 2 | Course Type | Lecture | |
| Target Year | Target Student | |||
| Language | Japanese | Day/Period | Tue.4 | |
| Instructor name |
YOSUKE ITOH (Graduate School of Engineering Senior Lecturer) HIROTSU KENICHI (Part-time Lecturer) |
|||
| Outline and Purpose of the Course | This lecture mainly explains the discharge and dielectric breakdown phenomena in gases and the underlying mechanisms. The specific focus shall be on the collision phenomena, excitation and ionization processes, basic processes in ionizing gas (such as transport phenomena), discharge inception theory and Paschen's law, various discharge types (such as corona, glow, and arc), discharge in solids, and creeping discharge. | |||
| Course Goals | To deepen the understanding of basic discharge processes and discharge maintenance mechanisms; as well as thoroughly deepening the understanding of basic characteristics and engineering application fields of various discharge forms. Such knowledge is vital for professionals involved in electrical and electronic engineering. | |||
| Schedule and Contents |
1. Discharge in gas and its engineering role [1 week] (Hirotsu) Gas discharge phenomena are outlined, and the purpose of the lecture is described. 2. Fundamental process in ionized gas [4 week] (Hirotsu) Fundamental process in ionized gas such as collision between gas molecules, excitation, ionization, transportation, recombination is described. 3. Start of gas discharge [3 weeks] (Ito) Explanation of electron avalanche phenomenon when an electric field is applied to a gas, and description of the mechanism of discharge inception in a gas and Paschen's law. Moreover, the streamer theory will be explained. 4. Steady gas discharge 1 (corona discharge, long gap discharge, lightning) [4 weeks] (Ito) Explanation of discharge form after a discharge starts. Here, each theory regarding discharge phenomena such as corona discharge, long gap discharge, and lightning discharge is described. 5. Steady gas discharge 2 (glow discharge, arc discharge) [1 week] (Hirotsu) Explanation of various discharge forms after a discharge starts. Here, each theory of discharge phenomena such as glow discharge and arc discharge is described. Furthermore, explanation of the technology used for various discharges 6. Discharge in solids, creeping discharge [1 week] (Hirotsu) Description of various discharge phenomena theories regarding discharges related to solids. Furthermore, explanation of countermeasures and uses of various types of discharge. 7. Verify learning attainment [1 week] Learning attainment verified for the entire lecture. |
|||
| Evaluation Methods and Policy | Evaluation is performed based on regular test scores. Attendance and quiz results may be considered. | |||
| Course Requirements | A rudimentary knowledge of physics of gasses is sufficient. | |||
| Study outside of Class (preparation and review) | Instructions should be given, as needed, during lectures but reviewing lecture content using provided materials is desirable. | |||
| Textbooks | Textbooks/References | Not used | ||
| References, etc. |
The Institute of Electrical Engineers of Japan 「電離気体論」 isbn{}{4886861067} Ohmsha, Ltd. 「高電圧工学」 isbn{}{4274214448} |
|||
