This component models a standard IEEE type exciter. All input parameters are either entered in seconds (time constants) or per-unit (all other inputs). The various external inputs and outputs described below:
Inputs:
Ef0: This input defines the output field voltage to the machine during the initialization period. Ef0 can be either defined by the user or can be defined from within the attached synchronous machine (through a Wire). The model will initialize the internal variables so that this value will be the output at Ef.
[VT/IT]: This input is a 3-element array and receives its data from the attached synchronous machine (provided that the machine is set to output this data). VT is the RMS terminal voltage. IT is the synchronous machine terminal current and is complex (i.e. has a real and imaginary component). The real component of IT is in phase with VT and the imaginary component of IT is in quadrature (lagging is positive) with VT.
VS: This input is provided only when using the exciter with a power system stabilizer. Please note that no VS input is available for exciter DC3A.
Vref: This input defines the voltage reference for the synchronous machine terminals. The value can be derived from a number of different components, which might include a slider, a real constant component or some other signal.
Outputs:
Ef: This output is the computed field voltage applied directly to synchronous machine. A Wire may be used to make the connection.
Vref0: This output is the initialized value of the reference voltage Vref and can be applied at the users discretion.
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DC1A: Rate Feedback Parameters
DC2A: Rate Feedback Parameters