Grid-Connected Marine Current Generation System Power Smoothing Control Using Supercapacitors
Language
en
Communication dans un congrès avec actes
This item was published in
Proceedings of the 2012 IEEE International Conference of the IEEE Industrial Electronics Society, IEEE IECON, 2012-10-18, Montreal. 2012-10-25p. 4035-4040
English Abstract
Swell is the main disturbance for marine tidal speed. The power harnessed by a marine current turbine (MCT) can be highly fluctuant due to swell effect. Conventional Maximum Power Point Tracking (MPPT) algorithm will require ...Read more >
Swell is the main disturbance for marine tidal speed. The power harnessed by a marine current turbine (MCT) can be highly fluctuant due to swell effect. Conventional Maximum Power Point Tracking (MPPT) algorithm will require the generator to accelerate/decelerate frequently under swell effect and therefore cause severe fluctuations in the generator power. This paper deals with power smoothing control of gridconnected MCT system. In the first step, a modified MPPT algorithm with filter strategy is proposed in the generator side control to reduce the fluctuation of generator power. In the second step, Supercapacitor (SC) Energy Storage System (ESS) is added to compensate the residual power fluctuations. As the average tidal speed is predictable, it is possible to control the SC ESS to compensate the swell effect and realize a smoothed power injected to the grid. Simulations carried-out on a 1.5 MW direct-driven gridconnected MCT generation system demonstrate that the association of the generator side filter strategy with the SC ESS system achieves a smoothed grid-injected power in case of swell disturbances.Read less <
English Keywords
Marine current turbine
power fluctuation
swell effect
power smoothing control
supercapacitor
Origin
Hal imported