Abstract:
This study presents the control scheme model of a
micro-hydrokinetic turbine system equipped with a permanent
magnet synchronous generator (PMSG). A power conversion
system model is developed to allow a variable speed hydrokinetic
turbine system to generate constant voltage and frequency at
variable water speeds. A DC-DC boosting chopper is used to
maintain constant DC link voltage. The DC current is regulated to
follow the optimized reference current for maximum power point
tracking (MPPT) operation of the turbine system. The DC link
voltage is controlled to feed the current into the load through the
line-side pulse width modulation (PWM) inverter. The proposed
scheme is modelled and simulated using MATLAB/Simulink. The
results show a high quality power conversion solution for a variable
speed hydrokinetic river system.
