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Input-parallel/output-parallel inverter assembly control device and method

  • US 9,362,815 B2
  • Filed: 10/24/2011
  • Issued: 06/07/2016
  • Est. Priority Date: 10/25/2010
  • Status: Active Grant
First Claim
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1. A method, comprising controlling multiple networked input-parallel/output-parallel inverters of a fuel cell system as a single inverter assembly by a master controller, wherein all of the inverters in the assembly receive the same split bus direct current (DC) input from a plurality of fuel cell stack segments as parallel inputs, and output a common three phase alternating current (AC) parallel output to a load, wherein the master controller:

  • senses a condition of the split bus DC input and controls a power set point and an on/off state of each individual inverter in the assembly to avoid a power collapse of the split bus DC input, andcontrols the power set point of each individual inverter in the assembly such that the power set point of a first inverter in the assembly is different from the power set point of a second inverter in the assembly.

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