An Overview on Current Control Techniques for （概述了电流控制技术）.pdf

2012 2nd International Conference on Power and Energy Systems (ICPES 2012) IPCSIT vol. 56 (2012) © (201 2) IACSIT Press, Singapore D OI: 10.7763/IPCSIT.2012.V56.22 An Overview on Current Control Techniques for Grid Connected Renewable Energy Systems 1 1 2 2 Mojgan Hojabri , Abu Zaharin Ahmad , Arash Toudeshki and Mohammadsoroush Soheilirad 1 Faculty of Electrical and Electronics Engineering, University Malaysia Pahang (UMP), 26600 Pekan, Malaysia 2Department of Electrical and Electronic Engineering, University Putra Malaysia (UPM), 43300 Serdang, Malaysia Abstract. Most type of renewable energy systems works in conjunction with the existing electrical grids. Also, inverter technology has an important role to have a safe and reliable grid interconnection operation of renewable energy systems. It is also necessary to generate a high quality power to the grid with reasonable cost. They also must be capable of provide high efficiency conversion with high power factor and low harmonic distortion. For this reason, the control policy must be considered. Therefore, the most important current control techniques are investigated in this paper. The ability of them to eliminate the steady state error, fast transient response and the possibility of compensation for low order harmonics is also discussed and compared to each other. Keywords: Current Control Techniques, Grid Connected Inverter