A Condition-Monitoring Method of DC-Link Capacitors Used in a High-Power Three-Phase PWM Inverter with an Evaluation Circuit
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- Hasegawa Kazunori
- Kyushu Institute of Technology
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- Nishizawa Shin-ichi
- Kyushu University
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- Omura Ichiro
- Kyushu Institute of Technology
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Description
<p>This paper presents a condition-monitoring method of dc-link capacitors used in a high-power three-phase PWM inverter with an evaluation circuit intended for ageing tests. Although its power rating is 1/25 of the inverter, the evaluation circuit provides the equivalent ripple current waveform and dc-bias voltage to the high-power inverter. The monitoring method independently extracts the capacitance and ESR of the dc-link capacitor, where the fast Fourier transform is introduced to the ripple current waveform and the dc-link voltage of the evaluation circuit. Experimental results verify that the monitoring method obtains both the ESR and capacitance changes of a capacitor under test.</p>
Journal
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- IEEJ Journal of Industry Applications
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IEEJ Journal of Industry Applications 8 (3), 480-487, 2019-05-01
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390001288135504768
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- NII Article ID
- 130007641615
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- ISSN
- 21871108
- 21871094
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- HANDLE
- 10228/00007687
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- NDL BIB ID
- 029661183
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed