scholarly journals Stationary Reference Frame Voltage Controller for Single Phase Grid Connected Inverter for Stand Alone Mode

2015 ◽  
Vol 20 (6) ◽  
pp. 517-525
Author(s):  
Chang-Pyo Hong ◽  
Hag-Wone Kim ◽  
Kwan-Yuhl Cho ◽  
Byoung-Kuk Lim
Keyword(s):  
Reference Frame ◽  
Single Phase ◽  
Voltage Controller ◽  
Stationary Reference Frame ◽  
Grid Connected Inverter

scholarly journals A Stationary Reference Frame Current Control Algorithm for Improvement of Transient Dynamics of a Single Phase Grid Connected Inverter

Electronics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 722 ◽  
Author(s):  
Horyeong Jeong ◽  
Jae Suk Lee
Keyword(s):  
Reference Frame ◽  
Disturbance Rejection ◽  
Control Algorithm ◽  
Single Phase ◽  
Current Control ◽  
Phase Lag ◽  
Phase Current ◽  
Disturbance Rejection Control ◽  
Stationary Reference Frame ◽  
Grid Connected Inverter

This paper proposes a stationary reference frame current control algorithm for a single-phase grid-connected inverter (GCI) for improvement of transient dynamic performance. Disturbance, i.e., grid voltage in a target system, is estimated using a stator current observer, and the estimated disturbance is applied to a current controller for implementation of disturbance rejection control (DRC). In the proposed current control algorithm, the disturbance rejection control algorithm is applied to reduce the overcurrent occurring in the single-phase grid-connected inverter when grid faults happen. In this paper, the AC phase current of a single-phase inverter is controlled, instead of the current vector, which is a DC signal. To compensate for the drawbacks of controlling the AC phase current, such as phase lag and steady-state error, command feedforward control is also applied in the proposed control system. The proposed control algorithm is mathematically derived and represented in transfer functions and implemented via simulation and experiment.

Singe-Phase Grid-Connected Inverter Based on Voltage-Oriented Control in Photovoltaic Generation Systems

2013 ◽  
Vol 765-767 ◽  
pp. 2498-2502
Author(s):  
Yong Yang ◽  
Chun Qing Qi ◽  
Ji Suo ◽  
Feng Wen Cao
Keyword(s):  
Feedback Control ◽  
Reference Frame ◽  
Single Phase ◽  
Control Structure ◽  
Current Control ◽  
Control Loop ◽  
Excellent Performance ◽  
Photovoltaic Generation ◽  
Control Scheme ◽  
Grid Connected Inverter

The paper proposes a new control of a transformerless singe-stage single-phase grid-connected inverter in photovoltaic generation systems. The control scheme is mainly based on voltage-oriented control (VOC) with help of second order Generalized Integrator (SOGI). A cascaded control structure with an outer dc link voltage control loop and an inner current control loop is used. The currents are controlled in a synchronous dq reference frame using a decoupled feedback control. The simulated results have proven an excellent performance and verified the validity of proposed system.

scholarly journals A Current Control Algorithm to Improve Command Tracking Performance and Resilience of a Grid-Connected Inverter

2020 ◽  
Vol 10 (23) ◽  
pp. 8642
Author(s):  
Horyeong Jeong ◽  
Jong Hyuk Choi ◽  
Jae Suk Lee
Keyword(s):  
Control System ◽  
Reference Frame ◽  
Disturbance Rejection ◽  
Control Algorithm ◽  
Current Control ◽  
Grid Current ◽  
State Response ◽  
Phase Lead ◽  
Stationary Reference Frame ◽  
Grid Connected Inverter

This paper presents a stationary reference frame grid current control algorithm for a grid-connected inverter (GCI) to improve command tracking performance and resilience in response to disturbances, i.e., a grid voltage incident in a GCI current control system. In the proposed algorithm, disturbance rejection is applied to reduce the overcurrent at the GCI in response to a grid fault. Disturbances to the GCI current control system are estimated using a grid current observer, and the estimate applied to the grid current controller to activate the disturbance rejection. The stationary reference frame current of a GCI system is also controlled to avoid cross-coupling issues at a synchronous reference frame model, reference transformation and dependency to phase locked loop (PLL) performance. However, the phase lead or lag and steady-state response error, which are drawbacks of AC signal control based on stationary reference frame proportional-integral (PI) controller, must be eliminated in order to secure competition with the synchronous reference PI (SRFPI) controller that was mainly used in the GCI system. Hence, to compensate for command tracking the AC current, such as steady-state response error and phase lead or lag, command feedforward control is applied in the proposed control system. The theory behind the proposed GCI current control algorithm is analyzed, and the proposed algorithm is tested via simulation and experimentation.

DC to Single-Phase AC Grid Connected Inverter with Boost Type Active Buffer Circuit Operated in Discontinuous Current Mode

2018 ◽  
Vol 138 (5) ◽  
pp. 453-462
Author(s):  
Jun-ichi Itoh ◽  
Tomokazu Sakuraba ◽  
Hoai Nam Le ◽  
Hiroki Watanabe ◽  
Keisuke Kusaka
Keyword(s):  
Single Phase ◽  
Current Mode ◽  
Grid Connected Inverter

Modeling and Control of a Single-Phase Grid-Connected Inverter with LCL Filter

2021 ◽  
Vol 19 (02) ◽  
pp. 250-259
Author(s):  
Jakson Paulo Bonaldo ◽  
Jose de Arimateia Olimpio Filho ◽  
Augusto Matheus dos Santos Alonso ◽  
Helmo Kelis Morales Paredes ◽  
Fernando Pinhabel Marafao
Keyword(s):  
Single Phase ◽  
Lcl Filter ◽  
Modeling And Control ◽  
Grid Connected Inverter ◽  
And Control

Single-Phase Two-Stage Transformerless Grid-Connected Inverter For Photovoltaic Applications

2021 ◽  
Author(s):  
Naser Vosoughi Kurdkandi ◽  
Milad Ghavipanjeh Marangalu ◽  
Tala Hemmati ◽  
Seyed Hossein Hosseini ◽  
Oleksandr Husev ◽  
...  
Keyword(s):  
Single Phase ◽  
Two Stage ◽  
Photovoltaic Applications ◽  
Grid Connected Inverter
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