Provided that the distance among units is equal and that one unit is influenced only by the neighbor ones. The units are endowed with three topological positions A, B and C (Fig. 5a). Type A has only one neighbor, type B has two central symmetric neighbors, and type C has two axisymmetric neighbors. The q factor is related to the topological type and the distance among units. The dynamic response of the WEC array can also be calculated by AQWA. If the neighbor unit in the left is set as the coordinate origin, the q of each topological type at different positions can be obtained (Fig. 5b). Higher value ofq means better performance of the unit. When the horizontal distance and the vertical distance among the units are D 8 2 and D 2 2 respectively, the q factors of the three topological types are high.