| Project/Area Number |
60460114
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
電力工学
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| Research Institution | Faculty of Engineering, Yokohama National University |
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Principal Investigator |
SERIZAWA Yasuo Division of Electrical and Computer Engineering, Faculty of Engineering, Yokohama National University. Professor., 工学部・電子情報工学科, 教授 (30017876)
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| Co-Investigator(Kenkyū-buntansha) |
SATOH Haruo Division of Electrical and Computer Engineering, Faculty of Engineering, Yokoham, 工学部・電子情報工学科, 助手 (20110736)
OYAMA Tsutomu Division of Electrical and Computer Engineering, Faculty of Engineering, Yokoham, 工学部・電子情報工学科, 助教授 (40160642)
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| Project Period (FY) |
1985 – 1987
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| Project Status |
Completed (Fiscal Year 1987)
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| Budget Amount *help |
¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 1987: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1986: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1985: ¥4,400,000 (Direct Cost: ¥4,400,000)
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| Keywords | DISPERSED GENERATING UNIT / HARMONICS / 送配電 |
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| Research Abstract |
In this study, the behavior of non-stationary harmonics arising from AC-DC converters has been analyzed theoretically and experimentally. The obtained main results as follows;
- The model system for real time FFT analyzer of harmonics has been made up. It consists of a set of synchronous generator and 6 pulse rectifier, and digital measuring equipment.
- The experiment and computer simulation for a synchronous generator-6 pulse rectifier model resulted in the confirnation of oubtreak of non-stationary harmonics caused by unbalanced input valtage and irregular thyrister gate pulse.
- The computer simulation for a synchronous generator-cycloconverter model resulted in confirming that arising harmonics are seriously affected by operational sutuations of electric power systems.
- Some influences of harmonics arising from a AC-DC converter on a small scale electric power system have been discussed. Consequently, it is confirmed that considerable harmonics appears in case a converter capacity is as large as a generator capacity, but the arising harmonics can be reduced by simple frequency filters.
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