In order to analyze operating states of pendulum wavepower generation process，a system model of wavepower system is established by using MATLAB/SimS cape under the actual operating condition， and the operating states of the two modes including continu-ous and intermittent generation are analyzed.The simulation results are consistent with the results of actual working.The simulation results show that accumulator is used to weaken the energy fluctuation induced by waves under the continuous generation mode， and the ter minal voltage is maintained at380Vdue to the voltage regulation of accumulator.The nun-der the intermittent generation mode， the accumulator stores up hydraulic energy.When the hydraulic pressure reaches energy, and the terminal voltage is maintained at380V for sometime.2.4MPa， the electromagnetic valve is opened to release hydraulic