dSPACE based implementation of a grid connected smart inverter system

This paper presents the implementation of a grid connected smart inverter using the dSPACE system as a rapid prototyping solution for laboratory implementation. The dSPACE works as a complete interface between the Matlab/Simulink modeling framework and the hardware. The integrated system is responsible for reading the measurement signals, running the control algorithm in real-time and sending the command signals to the inverter, as well as providing the user with a graphical user interface and data management. The inverter is designed as a single-phase full bridge converter operating at 120 V, 60 Hz AC, but easily reconfigured to other voltage or frequency. The control functionalities of the inverter are defined under the perspective of the Smart Grid Initiative of the US Department of Energy, as the abilities to: supply real and reactive power to local loads and to other utility loads up to the rated capacity of the inverter and provide voltage support at the point of common coupling (PCC) integrating renewable or alternative energy sources to the grid.