AUTONOMOUS OPERATION CONTROLLER OF DISTRIBUTED POWER SUPPLY, POWER CONDITIONER AND AUTONOMOUS OPERATION CONTROL METHOD OF DISTRIBUTED POWER SUPPLY

摘要

PROBLEM TO BE SOLVED: To provide an autonomous operation controller of distributed power supply capable of controlling to a stabilized output voltage without providing a sensor for detecting the load current, and without providing any special component even in a situation where an in-rush current is generated.;SOLUTION: An autonomous operation controller of distributed power supply including an inverter for converting a DC generator power into an AC power, and an LC filter for removing the harmonic components from the output of the inverter, is further provided with load current estimation units 51, 52 configured to be able to supply power to a stand-alone system when the system power supply goes below a predetermined voltage, and estimating the load current i_Load supplied to the stand-alone system based on the output current i_inv of the inverter and the output voltage e_sd of an LC filter, and performs feedback control based on the output voltage e_sd and load current i_Load, so that a target voltage e^*_sd is outputted from the inverter 3.;COPYRIGHT: (C)2016,JPO&INPIT