書誌事項
- タイトル別名
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- A Passive EMI Filter with Access to the Ungrounded Motor Neutral Line-Its Effect on Eliminating Leakage Current from the Inverter Heat Sink-
- モータ チュウセイセン オ リヨウ シタ パッシブ EMI フィルタ ホウネツ フィン カラ ノ モレ デンリュウ ノ ヨクセイ コウカ
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This paper deals with a leakage current flowing out of the heat sink of a voltage-source PWM inverter. The heat-sink leakage current is caused by a steep change in the common-mode voltage produced by the inverter. It flows through parasitic capacitors between the heat sink and power semiconductor devices when no EMI filter is connected. Experimental results reveal that the heat-sink leakage current flows not into the supply side, but into the motor side. These understandings succeed in describing an equivalent common-mode circuit taking the parasitic capacitors into account. The authors have proposed a passive EMI filter that is unique in access to the ungrounded motor neutral line. It is discussed from this equivalent circuit that the passive EMI filter is effective in preventing the leakage current from flowing. Moreover, installation of another small-sized common-mode inductor at the ac side of the diode rectifier prevents the leakage current from flowing into the supply side. Experimental results obtained from a 200-V, 3.7-kW laboratory system confirm the effectiveness and viability of the EMI filter.
収録刊行物
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- 電気学会論文誌Ｄ（産業応用部門誌）
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電気学会論文誌Ｄ（産業応用部門誌） 124 (11), 1141-1148, 2004
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390001204659168384
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- NII論文ID
- 10013713566
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- NII書誌ID
- AN10012320
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- BIBCODE
- 2004IJTIA.124.1141D
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- ISSN
- 13488163
- 09136339
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- NDL書誌ID
- 7138214
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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