CONTROLLER FOR DISTRIBUTION TYPE POWER SUPPLY SYSTEM, POWER CONDITIONER, DISTRIBUTION TYPE POWER SUPPLY SYSTEM, AND CONTROL METHOD FOR DISTRIBUTION TYPE POWER SUPPLY SYSTEM

摘要

PROBLEM TO BE SOLVED: To elongate a life of a storage battery or perform more efficient power supply by reducing the number of times of switching charge/discharge of the storage battery in a distribution type power supply system in which the storage battery and a power generator such as a natural energy power generator, co-generation system, or fuel cell are combined.;SOLUTION: A distribution type power supply system comprising a power generator and a storage battery discharges, in the case that a power generation amount by the power generator is short as compared with a power load amount, from the storage battery depending on an amount of the shortage; and charges, in the case that the power generation amount by the power generator is larger than the power load amount, the battery depending on an amount of the surplus. The distribution type power supply system, when the absolute value of a deviation between the power generation amount by the power generator and the power load amount is smaller, reduces the frequency of switching between a state of discharging from the storage battery and a state of charging the storage battery by converting a value of the deviation so that variation in the value is more strongly suppressed, as compared with the case that the absolute value of the deviation is larger.;COPYRIGHT: (C)2016,JPO&INPIT