Improved Direct Power Control for Grid-Connected Voltage Source Convertersopen access
- Authors
- Gui, Yonghao; Kim, Chunghun; Chung, Chung Choo; Guerrero, Josep M.; Guan, Yajuan; Vasquez, Juan C.
- Issue Date
- Oct-2018
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- DC-AC power converters; direct power control (DPC); exponentially stable; linear time-invariant (LTI) system
- Citation
- IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, v.65, no.10, pp.8041 - 8051
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
- Volume
- 65
- Number
- 10
- Start Page
- 8041
- End Page
- 8051
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/149225
- DOI
- 10.1109/TIE.2018.2801835
- ISSN
- 0278-0046
- Abstract
- A novel grid voltage modulated direct power control (GVM-DPC) strategy for a grid-connected voltage source converter is proposed to control the instantaneous active and reactive powers directly. The GVM-DPC method consists of a nonlinear GVM controller, a conventional controller (feedforward and PI feedback), and nonlinear damping. The proposed control strategy shows a relationship between DPC and voltage-oriented control methods designed in d-q frame. The main advantage is that the proposed method makes the system be a linear time-invariant system, which enables us to apply various control methods easily. The GVM-DPC guarantees not only the convergence rate but also the steady-state performance of the system. Moreover, it is ensured that the closed-loop system is exponentially stable. Finally, simulation and experimental results using a 2.2-kVA VSC are provided to validate the tracking performance and robustness of the proposed control architecture. In addition, the total harmonic distortion of the current is 1.9% which is much less than the requirement for grid operation.
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