Decoupled Control to Improve DC-Link Dynamics of Energy-Storage-Equipped STATCOM
Basnet, Hikmat; Roinila, Tomi; Hafezi, Hossein; Sallinen, Roosa; Tran, Minh (2022)
Basnet, Hikmat
Roinila, Tomi
Hafezi, Hossein
Sallinen, Roosa
Tran, Minh
IEEE
2022
SEST 2022 - 5th International Conference on Smart Energy Systems and Technologies
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202211108299
https://urn.fi/URN:NBN:fi:tuni-202211108299
Kuvaus
Peer reviewed
Tiivistelmä
Energy-storage-equipped static synchronous compensator (E-STATCOM) plays an important role in a modern power grid. Such a compensator can be efficiently applied to control the active and reactive power thus improving the voltage and frequency stability especially in a power grid that is dominated by renewable energy resources. A challenge using an E-STATCOM is to minimize the adverse effect of the AC components present in the DC-link voltage especially during charging and discharging of an energy-storage system (ESS). This paper proposes a novel application of the dq- decoupled control to minimize the undesired dynamical effect of the ESS on the DC-link voltage of the E-STATCOM. In this method active and reactive power are decoupled by eliminating the dq- frame cross-coupling terms using reference current produced by the power controller instead of the measured inductor current. Experimental measurements are shown to demonstrate the effectiveness of the proposed method.
Kokoelmat
- TUNICRIS-julkaisut [16929]