ExcIEEEAC6A

Class Description

IEEE 421.5-2005 type AC6A model. The model represents field-controlled alternator-rectifier excitation systems with system-supplied electronic voltage regulators. The maximum output of the regulator, VR, is a function of terminal voltage, VT. The field current limiter included in the original model AC6A remains in the 2005 update.
Reference: IEEE 421.5-2005, 6.6.

Attributes

Name Type Description
ka PU Voltage regulator gain (KA) (> 0). Typical value = 536.
kc PU Rectifier loading factor proportional to commutating reactance (KC) (>= 0). Typical value = 0,173.
kd PU Demagnetizing factor, a function of exciter alternator reactances (KD) (>= 0). Typical value = 1,91.
ke PU Exciter constant related to self-excited field (KE). Typical value = 1,6.
kh PU Exciter field current limiter gain (KH) (>= 0). Typical value = 92.
seve1 Float Exciter saturation function value at the corresponding exciter voltage, VE1, back of commutating reactance (SE[VE1]) (>= 0). Typical value = 0,214.
seve2 Float Exciter saturation function value at the corresponding exciter voltage, VE2, back of commutating reactance (SE[VE2]) (>= 0). Typical value = 0,044.
ta Seconds Voltage regulator time constant (TA) (>= 0). Typical value = 0,086.
tb Seconds Voltage regulator time constant (TB) (>= 0). Typical value = 9.
tc Seconds Voltage regulator time constant (TC) (>= 0). Typical value = 3.
te Seconds Exciter time constant, integration rate associated with exciter control (TE) (> 0). Typical value = 1.
th Seconds Exciter field current limiter time constant (TH) (> 0). Typical value = 0,08.
tj Seconds Exciter field current limiter time constant (TJ) (>= 0). Typical value = 0,02.
tk Seconds Voltage regulator time constant (TK) (>= 0). Typical value = 0,18.
vamax PU Maximum voltage regulator output (VAMAX) (> 0). Typical value = 75.
vamin PU Minimum voltage regulator output (VAMIN) (< 0). Typical value = -75.
ve1 PU Exciter alternator output voltages back of commutating reactance at which saturation is defined (VE1) (> 0). Typical value = 7,4.
ve2 PU Exciter alternator output voltages back of commutating reactance at which saturation is defined (VE2) (> 0). Typical value = 5,55.
vfelim PU Exciter field current limit reference (VFELIM) (> 0). Typical value = 19.
vhmax PU Maximum field current limiter signal reference (VHMAX) (> 0). Typical value = 75.
vrmax PU Maximum voltage regulator output (VRMAX) (> 0). Typical value = 44.
vrmin PU Minimum voltage regulator output (VRMIN) (< 0). Typical value = -36.

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