Simulation of Grid-Connected Solar Micro-Inverter Based on Fuzzy PI Controller and Feed-Forward Compensation

Authors

Weiliang Liu, State key laboratory of Alternate Electrical Power System with Renewable Energy Sources, Baoding 071003, China;
Changliang Liu, State key laboratory of Alternate Electrical Power System with Renewable Energy Sources, Baoding 071003, China;
Huichao Zhang, State key laboratory of Alternate Electrical Power System with Renewable Energy Sources, Baoding 071003, China;
Yongjun Lin, State key laboratory of Alternate Electrical Power System with Renewable Energy Sources, Baoding 071003, China;
Liangyu Ma, State key laboratory of Alternate Electrical Power System with Renewable Energy Sources, Baoding 071003, China;

Abstract

Abstract: Grid-connected solar micro-inverter is a highly nonlinear and time-varying system, so it is difficult to achieve good control effect using traditional PI controller. Small signal analysis model of micro-inverter was established, grid-connected current control strategy composed of fuzzy PI controller and grid voltage feed-forward was put forward, and the initial parameters of PI controller was optimized using the genetic algorithm. Simulation results show that the control strategy has the virtues of good robustness, small dynamic deviation, and could reduce the harmonic content of grid-connected current.

Recommended Citation

Liu, Weiliang; Liu, Changliang; Zhang, Huichao; Lin, Yongjun; and Ma, Liangyu (2020) "Simulation of Grid-Connected Solar Micro-Inverter Based on Fuzzy PI Controller and Feed-Forward Compensation," Journal of System Simulation: Vol. 27: Iss. 2, Article 28.
Available at: https://dc-china-simulation.researchcommons.org/journal/vol27/iss2/28

First Page

425

Revised Date

2014-07-15

DOI Link

https://doi.org/

Last Page

431

CLC

TM85

Recommended Citation

Liu Weiliang, Liu Changliang, Zhang Huichao, Lin Yongjun, Ma Liangyu. Simulation of Grid-Connected Solar Micro-Inverter Based on Fuzzy PI Controller and Feed-Forward Compensation[J]. Journal of System Simulation, 2015, 27(2): 425-431.