On the Practical Design of a Two-terminal Active Capacitor

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Resumé

A two-terminal active capacitor concept has been proposed recently based on an active power electronic circuit with a voltage control method and self-power scheme. It retains the convenience of use as a passive capacitor with two power terminals only without any additional required connections and has the potential to either increase power density or reduce design cost depending on the applications. Based on the previously proof-of-concept study, this paper addresses the design constraints, impedance modeling, and start-up solutions of two-terminal active capacitors. A design method for functionality, efficiency, lifetime, and cost-constraint applications is applied to size the active components and passive elements. A voltage feedforward control scheme is implemented to improve its dynamic response. Two start-up solutions are proposed to overcome the issues brought by the self-power scheme. A case study of an active capacitor for the dc link of a single-phase full-bridge rectifier is presented to demonstrate the theoretical analyses.

OriginalsprogEngelsk
Artikelnummer8612976
TidsskriftI E E E Transactions on Power Electronics
Vol/bind34
Udgave nummer10
Sider (fra-til)10006-10020
Antal sider15
ISSN0885-8993
DOI
StatusUdgivet - okt. 2019

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Capacitors
Voltage control
Feedforward control
Power electronics
Dynamic response
Costs
Networks (circuits)

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On the Practical Design of a Two-terminal Active Capacitor. / Wang, Haoran; Liu, Yang; Wang, Huai.

I: I E E E Transactions on Power Electronics, Bind 34, Nr. 10, 8612976, 10.2019, s. 10006-10020.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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