The low-frequency limit for wave-power systems

Relations are derived for the maximum power absorbed by a system of devices in the low-frequency or long-wavelength limit. A Fourier series is used to represent the far-field radiation potential, and the number of terms in the Fourier series determines the maximum output of the system subject to the restriction of optimum motions. For an array with N devices, or a single device with N separate degrees of freedom, the maximum output is a function of N and the angle of the incident waves.