Abstract
Design and simulation of a new inverter scheme are reported in the paper. The inverter is especially developed for an axial flux permanent synchronous generator (AFPMSG), which can be used for low power wind energy systems. The system includes a battery charge unit in addition to the inverter. Initially, the permanent magnet synchronous generator (PMSG) model has been created for MATLAB/Simulink environment. Since frequency and amplitude of the waveforms generated by the PMSG strictly depend on the rotation speed, several tests have been performed under different wind speed regimes. Then, an appropriate inverter model has been designed and connected to the output of the PMSG in order to convert the generated voltage from AC to DC. Thereby, stabilizing voltage and frequency has been assured and the charge of the battery unit has been realized for efficient energy storage. The simulations show that the system designed has lower THD on the current signal according to the similar ones presented in recent literature. Furthermore, the THD value has been much improved (i.e. 0.72%) thanks to the design of an additional filter unit. The proposed system can be implemented to low power wind energy systems.
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