Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Performance Comparison of Different Solar Array Simulator Controlby Ellipse Approximation
Authors Thusitha Wellawatta ; Young-Tae Seo ; Sung-Jin Choi
DOI 10.6113/TKPE.2021.26.1.16
Page pp.16-24
ISSN 1229-2214
Keywords PV model; Solar array simulator; Small signal analysis; Multi-loop control
Abstract Solar array simulator (SAS) is essential equipment in testing and evaluating the power processing performance of a power conditioning system. However, the nonlinearity in the current(I)-voltage(V) characteristic makes the control loop design of SAS a challenging task. Conventionally, only the inner loop is usually considered in the control design approach. However, this study proves that the reference generation loop also interacts with the inner loop and plays a key role in the overall performance of the SAS. In this paper, the performance of voltage-mode control and impedance control, which are two of the most popular architectures for the SAS system, are reviewed and compared by multi-loop analysis.