Abstract
The development of tidal turbines continues to be carried out by many researchers, including the incorporation of a control system for optimization purposes. This paper attempts to assess the stability of two mechanical systems in a tidal turbine: a propeller harvesting kinetic energy and a d-q diagram system on a permanent-magnet synchronous generator (PMSG). The method employed is the representation of a phase plane profile with a stable eigenvalue. The critical value of the turbine’s rotations per minute provides some points of equilibrium. The effect of the angular velocity singular on the modified system was also investigated. There is no cutoff control for the generator rotational speed in the case of weak currents, according to the results. The combination of the three tidal turbine components results in a shift in the equilibrium point. Although PMSG has an infinite equilibrium point along the line Id = 0, the effect of the rotor angular velocity prevents all of these points from being in equilibrium. Finally, in this study, the rotor angular velocity caused by the speed and type of ocean currents are only the upper and lower limits. The stability of the various wave variations is within this range.
Highlights
In this study, the rotor angular velocity caused by the speed and type of ocean currents are only the upper and lower limits
A horizontal tidal turbine captures hydrodynamic energy and converts it to electricity using a generator. e generator commonly used is permanent-magnet synchronous generator (PMSG) which has a weakness in the vulnerability to damage caused by the absence of a protection system between the turbine and generator [7]
Li et al [8] use a full-scale tidal current turbine to verify the design method with high reliability, and a TCT of 600 kW was used in that study. e turbine consists of a twopropeller rotor, a low rate gearbox, and a generator
Summary
Hydrodynamics and Tidal Turbine Generator Stability Analysis in Several Wave Variations. Li et al [8] use a full-scale tidal current turbine to verify the design method with high reliability, and a TCT of 600 kW was used in that study. E turbulence effect is neglected for analysis purposes With this approach, the turbine’s power P in waves can be explained by the density-area-speed equation [17]:. Where ρ express the fluid density of sea water, area A πr follows the circle cross section with the radius of the turbine r, v is the current speed, Cp is the turbine efficiency, β represents the blade pitch angle, and λ is the velocity ratio at the defined propeller tip shown as follows [34]:
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