Embedded system design for digital control of single phase Z-Source inverter using FPGA

Z-Source inverter comprises of two port impedance network with a small value dc link capacitor. Suitable control of the switching pattern provides the desired output ac voltage. Automated HDL code from MATLAB/Simulink with Xilinx integrated environment minimizes the effort of the system developer and researcher in modeling and design of the system. The attractive features of Z source inverter in the field of renewable energy developed the attention of researchers in the recent years. The paper presents the development of embedded system design using Altium Nanoboard FPGA kit for generation of suitable control signal for Z source inverter. FPGA board is chosen for real time hardware prototyping with higher level of abstraction for digital control due to its ability to produce accurate results with high computational speed and software portability. Xilinx system generator, a plug in tool in MATLAB/Simulink with integrated block set library based pulse width modulation for increased resolution without unnecessarily increasing the clock frequency is used.