Bond graph modeling and fault diagnosis of tidal turbine systems

In recent years, global tidal power industry is developing rapidly in the case that the working environment of tidal turbines is extremely complicated and turbines are affected by the fluctuation of current speed and load, so its vibration signal is non-stationary, nonlinear and time-varying. Besides tidal turbines maintenance costs have been high all the time, which seriously restricts the healthy development of the tidal power industry. To solve the problem, this paper applies bond graph, a method based on energy transformation and conservation, in tidal turbine modeling and fault diagnosis, and the simulation of modeling and fault diagnosis of the system is carried out in MATLAB/Simulink at the end.