| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an output stabilization apparatus for photovoltaic power generation equipment that can suppress a supply of pulsations included in output power of photovoltaic power generation equipment to a three-phase AC system. <P>SOLUTION: Power converters 15 with secondary batteries or capacitors connected in parallel are cascade-connected to each phase of a connection end of a three-phase AC system 11 with photovoltaic power generation equipment 12 interconnected to constitute two cascade converter systems 14A, 14B. A NAS battery 16 is connected between neutral points of the two cascade converter systems 14A, 14B. A control device 17 takes a part including pulsations out of output power of the photovoltaic power generation equipment 12 to the three-phase AC system 11, into the two cascade converter systems 14A, 14B, and controls the power converters 15 of the two cascade converter systems 14A, 14B such that the secondary batteries or capacitors are charged with/discharged of short period pulsations of the captured power to average the power and that the NAS battery 16 is charged with the averaged power. <P>COPYRIGHT: (C)2012,JPO&INPIT |
