Dynamic Modeling and Investigation of a Tunable Vortex Bladeless Wind Turbine

This paper investigates the dynamics of an electromagnetic vortex bladeless wind turbine (VBWT) with a tunable mechanism. The mechanism comprises progressive-rate spring that is attached to oscillating magnet inside coil. stiffness progressively adjusted as speed changes tune fundamental frequency match shedding vortex-induced vibration (VIV) due flow crossing over mast. Coupled nonlinear equations motion are developed using lumped-mass representation and Lagrange formulation. Numerical results show performs effectively beyond threshold speed. An analytical expression derived based on mechanical turbine. in reasonable agreement numerical evaluations. At given past threshold, has optimum at which output power maximum. studies also 2 m long tens times larger comparison conventional For example, 4.22 m/s, rms around 1105 mW versus 17 VBWT. can be further maximized external load. research work demonstrated feasibility merits proposed enhance overall performance