In this paper, it is shown how to make BBDB match the turbine
characteristics. This feature is being able to select the optimum
profile of the turbine and the BBDB individually from each characteristic
before comprehensive evaluation of the BBDB and the
turbine in the design. After fully grasping the element characteristics,
which are relevant for the wave energy conversion system,
the synthetic design method is built. The BBDB size and the turbine
diameter are determined by considering the cost corresponding
to the smallest size under the same output, securing starting
performance of Wells turbine.