Reduced-Rating-Electronic-Capacitor-Based DC Links for Power Electronics Supported Distributed Energy Resources

Pavel Strajnikov; Mor Mordechai Peretz; Alon Kuperman

doi:https://doi.org/10.1109/TSG.2021.3120773

Reduced-Rating-Electronic-Capacitor-Based DC Links for Power Electronics Supported Distributed Energy Resources

Pavel Strajnikov, Mor Mordechai Peretz, Alon Kuperman

Ben-Gurion University of the Negev

Research output: Contribution to journal › Article › peer-review

Abstract

Electronic Capacitor (EC) is formed by a bidirectional DC-DC converter terminated with small auxiliary capacitance. The device is capable of mimicking the behavior of a bulk DC link capacitor while actually employing a component with much lower capacitance value. The paper demonstrates that forcing an EC to emulate a negative capacitance while connecting it in series with a passive capacitor leads to DC-DC converter rating reduction and subsequent potential volume reduction and efficiency increase of a DC link. Such a device may replace a traditional bulk DC link capacitor present in power electronics supported distributed energy resources in a plug-and-play manner. Simulations and experiments of a common dual stage AC/DC power conversion system employing the proposed active DC link validate the methodology.

Original language	American English
Pages (from-to)	3943-3953
Number of pages	11
Journal	IEEE Transactions on Smart Grid
Volume	13
Issue number	5
DOIs	https://doi.org/10.1109/TSG.2021.3120773
State	Published - 1 Sep 2022

Keywords

DC link
Multi-converter system
electronic capacitor
reduced rating

All Science Journal Classification (ASJC) codes

General Computer Science

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https://doi.org/10.1109/TSG.2021.3120773

Cite this

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abstract = "Electronic Capacitor (EC) is formed by a bidirectional DC-DC converter terminated with small auxiliary capacitance. The device is capable of mimicking the behavior of a bulk DC link capacitor while actually employing a component with much lower capacitance value. The paper demonstrates that forcing an EC to emulate a negative capacitance while connecting it in series with a passive capacitor leads to DC-DC converter rating reduction and subsequent potential volume reduction and efficiency increase of a DC link. Such a device may replace a traditional bulk DC link capacitor present in power electronics supported distributed energy resources in a plug-and-play manner. Simulations and experiments of a common dual stage AC/DC power conversion system employing the proposed active DC link validate the methodology.",

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AB - Electronic Capacitor (EC) is formed by a bidirectional DC-DC converter terminated with small auxiliary capacitance. The device is capable of mimicking the behavior of a bulk DC link capacitor while actually employing a component with much lower capacitance value. The paper demonstrates that forcing an EC to emulate a negative capacitance while connecting it in series with a passive capacitor leads to DC-DC converter rating reduction and subsequent potential volume reduction and efficiency increase of a DC link. Such a device may replace a traditional bulk DC link capacitor present in power electronics supported distributed energy resources in a plug-and-play manner. Simulations and experiments of a common dual stage AC/DC power conversion system employing the proposed active DC link validate the methodology.

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Reduced-Rating-Electronic-Capacitor-Based DC Links for Power Electronics Supported Distributed Energy Resources

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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