HYBRID POWER SYSTEM APPARATUS AND CONTROL METHOD PERFORMING POWER DISTRIBUTION BETWEEN FUEL CELL AND BATTERY

摘要

The present invention relates to a hybrid power system, apparatus and control method for distributing power between a fuel cell and a battery, which is connected to the fuel cell and converts the DC voltage produced in the fuel cell according to a first switching control signal to provide a DC link The first DC/DC converter provided to the battery, and connected to the battery, converts the voltage of the DC link according to the second and third switching control signals to provide it to the battery, or converts the DC voltage of the battery and provides it to the DC link 2 The load sharing ratio between the fuel cell and the battery is determined by analyzing the characteristics according to the requirements of the DC/DC converter and the external load connected to the DC link, and the output current of the fuel cell and the voltage of the DC link are adjusted according to the load sharing ratio. and a controller outputting first to third switching control signals for feedback control.