Digital Sharing Method For Spacecraft High-power DC Power Supply
To address the current sharing problem of power modules in spacecraft high-power digital current(DC)power supply systems,a digital current sharing method for DC power supply system is proposed.The main control software of power supply is taken as the current sharing core to output each DC power module in parallel,exchange the data with various DC power module through Ethernet,and collect the output current of each DC power supply.The output voltage of the DC power supply is adjusted through the current sharing algorithm to achieve the goal of power supply current sharing.Based on existing DC power supply,a high-power DC power supply parallel hardware circuit is designed,it includes the input control unit,remote compensation circuit,and output control unit.In the software of the system,the power supply and distribution main control software is designed,including the current sharing control function,power supply and distribution process function,and power module monitoring function.Through actual hardware environment experiments,the results show that this method has high current sharing accuracy,fast response speed,and strong fault control ability,and it has a high practical value in the field of aerospace power supply.
DC power supplydigital current sharingspacecrafthigh-powercurrent sampling
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