2nd International Energy Conversion Engineering Conference · 2004 · 15 citations · 4 references
EngineeringComputer EngineeringComputer ScienceDistributed SystemsPower ElectronicsReconfigurable ComputingDc-ac InvertersDc-dc ConversionDc-dc ConvertersDistributed ControlPower ManagementPulse-width ModulationConverter ControlConvertersCurrent Ripple ReductionDc-dc Converter ControlInterleaved ConvertersLoad SharingLoad Sharing StrategiesRipple Reduction
A distributed control system (DCS) is developed and hardware verified for a class of digitally controlled modular DC-DC converters. The converters are each independently controlled by its own FPGA-based digital controller. A Control Area Network (CAN) is first set up for the converters to communicate in a master-less peer-to-peer manner. An algorithm is developed to make the converters share the load (current) dynamically in a predetermined manner. More importantly, it makes it possible to for all converters to automatically time-shift their PWM gating signals to minimize the current ripple, which is known as interleaving. An algorithm is developed for this distributed master-less control of power converter system so that the load sharing and interleaving are adjusted autonomously, in real time, as the number of converters changes without prior knowledge.
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