A Virtual HIL Approach for the Optimization of Three Phase Grid Connected Converter
Sridhar Patti, Ranjith Kumar Gatla, T Gopi Krishna
Abstract
A significant drive is currently underway to integrate an ever-increasing number of distributed energy resources into the power system, termed the "Smart grid."For effective operation of the grid at all levels, it is required to adopt well-advanced software and hardware components.In any instance, the entire process is time consuming and only provides a partial view of the system's behavior under various nominal and fault operating conditions.The Hardware-In-the-Loop (HIL) approach is widely interpreted as a valuable prototype tool for Grid Connected Converter (GCC) development and validation at both the converter and power grid at all levels.The paper is based on the Controller -HIL (C-HIL) approach that demonstrates the Typhoon HIL control center which provides remarkable efforts to test and optimize the GCC control loops.It includes the test and optimization of the converter harmonic performance, optimization of the grid filter, injection of active and reactive power into the grid and analysis of various ride through faults in the system.It also includes the design of the current controller, Total Harmonic Distortion (THD) analysis and comparison of the model with and without implementing the maximum power point optimization technique.