No abstract

Grid connected power converters are widely used to interface between gridon one side-and loads or renewable energy sourceson the other side. This work presents an indirect sliding mode power control (ISMPC) for three phase grid connected power converter. This control is characterised by improved robustness with regard to external disturbances and parameters changes, while insuring at the same time low current total harmonic distortion factor. The development and implementation of the ISMPC algorithm on low cost Microsemi SmartFusion digital solution is also described. This digital solution includes in the same chip a Field Programmable Gate Array (FPGA) fabric and a Cortex-M3 processor associated to large number of peripheral cores. The developed ISMPC is compared with standard and commonly used controls for grid connected converters to show its interest and advantages. Moreover, an overview of the experimental setup , the description of the algorithm modular partitioning between FPGA and processor, the resources optimisation as well as the execution time reduction are presented. Selected experimental results corresponding to different operation steps are presented to illustrate performances and effectiveness of the proposed ISMPC algorithm.

This paper presents the design of a digital Infinite Impulse Response (IIR) filter for active filtering applications, which are useful for the correction of harmonic currents produced by non linear loads. The designed hardware architecture of the digital IIR filter was coded in VHDL (Very high speed integrated Hardware Description Language) for Field Programmable Gate Array (FPGA) implementation. The obtained computation time of the IIR filter is very low and only equal to 1.62 µs. Numerous simulation results are presented in order to illustrate the efficiency of the designed IIR filter.