ExcAC8B

Class Description

Modified IEEE AC8B alternator-supplied rectifier excitation system with speed input and input limiter.

Attributes

Name Type Description
inlim Boolean Input limiter indicator.
true = input limiter Vimax and Vimin is considered
false = input limiter Vimax and Vimin is not considered.
Typical value = true.
ka PU Voltage regulator gain (Ka) (> 0). Typical value = 1.
kc PU Rectifier loading factor proportional to commutating reactance (Kc) (>= 0). Typical value = 0,55.
kd PU Demagnetizing factor, a function of exciter alternator reactances (Kd) (>= 0). Typical value = 1,1.
kdr PU Voltage regulator derivative gain (Kdr) (>= 0). Typical value = 10.
ke PU Exciter constant related to self-excited field (Ke). Typical value = 1.
kir PU Voltage regulator integral gain (Kir) (>= 0). Typical value = 5.
kpr PU Voltage regulator proportional gain (Kpr) (> 0 if ExcAC8B.kir = 0). Typical value = 80.
ks PU Coefficient to allow different usage of the model-speed coefficient (Ks). Typical value = 0.
pidlim Boolean PID limiter indicator.
true = input limiter Vpidmax and Vpidmin is considered
false = input limiter Vpidmax and Vpidmin is not considered.
Typical value = true.
seve1 Float Exciter saturation function value at the corresponding exciter voltage, Ve1, back of commutating reactance (Se[Ve1]) (>= 0). Typical value = 0,3.
seve2 Float Exciter saturation function value at the corresponding exciter voltage, Ve2, back of commutating reactance (Se[Ve2]) (>= 0). Typical value = 3.
ta Seconds Voltage regulator time constant (Ta) (>= 0). Typical value = 0.
tdr Seconds Lag time constant (Tdr) (> 0 if ExcAC8B.kdr > 0). Typical value = 0,1.
te Seconds Exciter time constant, integration rate associated with exciter control (Te) (> 0). Typical value = 1,2.
telim Boolean Selector for the limiter on the block (1/sTe).
See diagram for meaning of true and false.
Typical value = false.
ve1 PU Exciter alternator output voltages back of commutating reactance at which saturation is defined (Ve1) (> 0). Typical value = 6,5.
ve2 PU Exciter alternator output voltages back of commutating reactance at which saturation is defined (Ve2) (> 0). Typical value = 9.
vemin PU Minimum exciter voltage output (Vemin) (<= 0). Typical value = 0.
vfemax PU Exciter field current limit reference (Vfemax). Typical value = 6.
vimax PU Input signal maximum (Vimax) (> ExcAC8B.vimin). Typical value = 35.
vimin PU Input signal minimum (Vimin) (< ExcAC8B.vimax). Typical value = -10.
vpidmax PU PID maximum controller output (Vpidmax) (> ExcAC8B.vpidmin). Typical value = 35.
vpidmin PU PID minimum controller output (Vpidmin) (< ExcAC8B.vpidmax). Typical value = -10.
vrmax PU Maximum voltage regulator output (Vrmax) (> 0). Typical value = 35.
vrmin PU Minimum voltage regulator output (Vrmin) (< 0). Typical value = 0.
vtmult Boolean Multiply by generator’s terminal voltage indicator.
true =the limits Vrmax and Vrmin are multiplied by the generator’s terminal voltage to represent a thyristor power stage fed from the generator terminals
false = limits are not multiplied by generator’s terminal voltage.
Typical value = false.

Relationships

Inherits from

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Leaf/Root class

IsLeaf IsRoot
False False

Associations

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