New Methods for the Active Compensation of Unbalanced Supply Voltages for Two-Stage Direct Power Converters
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- Klumpner Christian
- School of Electrical and Electronic Engineering, University of Nottingham
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- Wijekoon Thiwanka
- School of Electrical and Electronic Engineering, University of Nottingham
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- Wheeler Patrick
- School of Electrical and Electronic Engineering, University of Nottingham
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Unbalanced supply voltages can be fully compensated in boost type power converters with active front end if sufficient energy storage is provided by the DC-link capacitor. In converters that have no energy storage, for example in a matrix converter, the maximum voltage transfer ratio will be limited if one or more input lines is at a reduced voltage. Control techniques to compensate the effect of unbalanced voltage supply for matrix converters allow for a limited output voltage and power capabilities, which depends on the level of unbalance. This paper proposes the utilization of the clamp capacitor, which is normally needed to protect a Direct Power Converter (DPC), to extend the operating range of a Two-Stage DPC during unbalanced supply conditions preserving its theoretic maximum voltage transfer ratio capability. A new topology based on a hybrid approach, consisting of an H-bridge inverter inserted into the intermediary link, which is also able to preserve the output voltage capability under unbalanced supply conditions, is proposed. Both solutions are validated through simulations.
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） 126 (5), 589-598, 2006
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
- 1390001204658769664
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- NII論文ID
- 10018111612
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- NII書誌ID
- AN10012320
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- ISSN
- 13488163
- 09136339
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- NDL書誌ID
- 7946709
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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