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