Integrated control system and method for controlling mode, synchronization, power factor, and utility outage ride-through for micropower generation systems

  • US 6,380,719 B2
  • Filed: 07/03/2001
  • Issued: 04/30/2002
  • Est. Priority Date: 08/26/1998
  • Status: Expired due to Term
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First Claim
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1. A method of controlling a device having a full wave rectifier connected to a generator, a DC bus connected to the output of the full wave rectifier, an inverter connected to the DC bus, an inductor unit connected to the output of the inverter, and a first contactor unit selectively connecting and disconnecting the inductor unit to and from a grid, the method comprising the steps of:

  • commanding the inverter to perform online voltage control;

    detecting a fault condition indicating a fault in the device or the grid opening the first contactor;

    clearing a time counter;

    setting a mode to an offline mode; and

    commanding the inverter to perform offline voltage control;

    said opening, clearing, setting and commanding offline voltage control steps being performed when said detecting step detects the fault condition or continues to detect the fault condition.

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