@article{oai:kyutech.repo.nii.ac.jp:00006477, author = {Hasegawa, Kazunori and 長谷川, 一徳 and Nishizawa, Shin-ichi and Omura, Ichiro and 大村, 一郎}, issue = {3}, journal = {IEEJ Journal of Industry Applications}, month = {May}, note = {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.}, pages = {480--487}, title = {A Condition-Monitoring Method of DC-Link Capacitors Used in a High-Power Three-Phase PWM Inverter with an Evaluation Circuit}, volume = {8}, year = {2019}, yomi = {ハセガワ, カズノリ and オオムラ, イチロウ} }