학술논문
Grid Simulator With Phase-Amplitude Compensation
Document Type
Periodical
Source
IEEE Transactions on Industry Applications IEEE Trans. on Ind. Applicat. Industry Applications, IEEE Transactions on. 60(3):4201-4212 Jun, 2024
Subject
Language
ISSN
0093-9994
1939-9367
1939-9367
Abstract
This paper proposes a grid simulator with Phase-Amplitude Compensation (PAC). The system allows independent and flexible adjustment of specific harmonic controller parameters to simulate abnormal grid conditions (e.g., short-circuit faults, high harmonic contamination, and sudden frequency changes). With the proposed phase and amplitude compensation loops, the tracking error can be effectively reduced not only in the control of the fundamental frequency components, but in the high-frequency harmonic components. Compared with the conventional grid simulator, it can more flexibly adjust the fundamental and harmonic components of the output voltages. With the proposed method, users can modularly add fundamental and harmonic controllers to the system according to the required needs, independently control the required voltage harmonics, and still simulate common power grid fault situations. Moreover, when designing a harmonic controller, it is sufficient to design it for low-frequency signals, which greatly reduces the complexity. Finally, the proposed control method is validated by measurements of different abnormal power-grid simulations.