Passivity-Based Design of Resonant Current Controllers Without Involving Partial Derivative

Chao Gao, Shan He*, Pooya Davari, Ka Nang Leung, Poh Chiang Loh, Frede Blaabjerg

*Kontaktforfatter

Publikation: Bidrag til tidsskriftLetterpeer review

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Abstract

In terms of digital control delay, dissipation of the current controller is necessary to enhance the interactive stability between grid-following converters and the grid. The key principle is to make the real part of the converter output admittance non-negative below Nyquist frequency. Besides the fundamental current control, a phase-lead compensation should be introduced for the dissipative design of harmonic resonant controllers. However, derivation of the compensation angle requires calculating the partial derivative of real part of converter output admittance, which is nontrivial, especially in the presence of grid voltage feedforward. This letter provides a simple calculation method for the compensation angle to achieve dissipativity, and its effectiveness is verified through experiments.
OriginalsprogEngelsk
Artikelnummer10244049
TidsskriftI E E E Transactions on Power Electronics
Vol/bind38
Udgave nummer12
Sider (fra-til)15102-15108
Antal sider7
ISSN0885-8993
DOI
StatusUdgivet - 1 dec. 2023

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