Power Smoothing and Limitation Control of a PMSG-Based Marine Current Turbine under Swell Waves
Language
en
Communication dans un congrès avec actes
This item was published in
Actes desJournées Jeunes Chercheurs en Génie Electrique 2013, JCGE SEEDS 2013, 2013-06-05, Saint Nazaire. 2013-06-05p. 1-7
English Abstract
Variations of marine current speed can lead to strong fluctuations in the power extracted by a marine current turbine (MCT). During short-time period, swell effect is the main cause for the current speed variations. ...Read more >
Variations of marine current speed can lead to strong fluctuations in the power extracted by a marine current turbine (MCT). During short-time period, swell effect is the main cause for the current speed variations. Conventional tip speed ratio Maximum Power Point Tracking (MPPT) algorithm will require the MCT to accelerate or to decelerate frequently under swell effect, which can cause severe fluctuations in the generator power. This paper focuses on power smoothing control of a PMSG-Based MCT system. A modified MPPT algorithm with filter strategy is proposed in generator-side control to use the system inertia for smoothing the fluctuation of generator power. When the current speed is over rated value, the power limitation control will be applied. A robust feedback flux-weakening control algorithm is studied for a fixed pitch PMSG-based MCT; both speed loop and torque loop control strategies are simulated and compared to show the power limitation control effects at high marine current speeds.Read less <
English Keywords
flux-weakening
Swell effect
marine current turbine
PMSG
power smoothing control
power limitation
flux-weakening.
Origin
Hal imported