Control of voltage source inverter using FPGA implementation of ADALINE-FLL

Power electronics converters like Voltage source inverters (VSI) are normally employed as the power interface in many applications including the uninterruptible power systems (UPS) and the renewable energy systems. Both, stand alone operation and grid connected operation of VSI need an accurate voltage and frequency control (V-F control) to keep a stable operation and a good output power control. A correct V-F control is mandatory for the parallel operation of inverters like in UPS and micro-grid systems. This paper presents a control structure for voltage and frequency control of VSI based on the Adaptive Linear Neuron with Frequency Locked Loop (ADALINE-FLL). The proposed structure offers a good transient and steady state response. The proposed structure has been implemented in a Field Programmable Gate Array (FPGA) device. Simulation and experimental results demonstrate the validity of the proposition.