TY - GEN
T1 - Improvement of transient response of a grid-connected inverter applying estimated disturbance rejection
AU - Jeong, Horyeong
AU - Choi, Sungmin
AU - Lee, Jae Suk
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/3
Y1 - 2020/3
N2 - This paper presents disturbance rejection control algorithm at stationary reference frame for a grid connected inverter (GCI) to reduce peak current during transient when grid fault occurs. The proposed control algorithm includes feedforward control, a grid current observer for grid voltage disturbance estimation. Also sinusoidal current vectors (α, β vectors at stationary reference frame) are controlled instead of a current vector at a synchronous reference frame. By doing this, phase estimation algorithm for grid voltage such as phase locked loop (PLL) and reference transformation can be avoided and an entire control system can be simplified. However, phase delay and steady state error are occurred by controlling sinusoidal signals. The drawbacks can be also compensated by applying the proposed algorithm. The proposed algorithm is verified via simulation and experiment.
AB - This paper presents disturbance rejection control algorithm at stationary reference frame for a grid connected inverter (GCI) to reduce peak current during transient when grid fault occurs. The proposed control algorithm includes feedforward control, a grid current observer for grid voltage disturbance estimation. Also sinusoidal current vectors (α, β vectors at stationary reference frame) are controlled instead of a current vector at a synchronous reference frame. By doing this, phase estimation algorithm for grid voltage such as phase locked loop (PLL) and reference transformation can be avoided and an entire control system can be simplified. However, phase delay and steady state error are occurred by controlling sinusoidal signals. The drawbacks can be also compensated by applying the proposed algorithm. The proposed algorithm is verified via simulation and experiment.
UR - https://www.scopus.com/pages/publications/85087771984
U2 - 10.1109/APEC39645.2020.9124419
DO - 10.1109/APEC39645.2020.9124419
M3 - Conference paper
AN - SCOPUS:85087771984
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 3092
EP - 3095
BT - APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
Y2 - 15 March 2020 through 19 March 2020
ER -