STATE SPACE MODEL OF A HYDRAULIC POWER TAKE OFF UNIT FOR WAVE ENERGY CONVERSION EMPLOYING BONDGRAPHS

摘要: In this work, the modeling of a Power Take- Off (PTO) unit for point absorber wave energy converter is described. The PTO influences energy conversion performance by its efficiency and by damping force exerted, which affects motion body. The state space model presented gives a description force the internal dynamics PTO. aim this work to develop PTO as a part complete wave-to-wire a wave in Figure 1, used for the design control techniques. Figure 1: Wave-to-wire structure A bondgraph employed the physical system that provides transparent and methodical means formulating space equations visualizing transfer throughout system. Bondgraphs have already been shown be very useful tool wave energy converters (2). dynamic the mathematical then analyzed respect to the variation parameters; particular, the non-linear obtained linearized its eigenvalues are calculated function the accumulator size pre-charge pressure