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, <i>V</i><i><sub>R</sub></i>, is a function of terminal voltage, <i>V</i><i><sub>T</sub></i>. 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 (<i>K</i><i><sub>A</sub></i>) (> 0). Typical value = 536. |
| kc | PU | Rectifier loading factor proportional to commutating reactance (<i>K</i><i><sub>C</sub></i>) (>= 0). Typical value = 0,173. |
| kd | PU | Demagnetizing factor, a function of exciter alternator reactances (<i>K</i><i><sub>D</sub></i>) (>= 0). Typical value = 1,91. |
| ke | PU | Exciter constant related to self-excited field (<i>K</i><i><sub>E</sub></i>). Typical value = 1,6. |
| kh | PU | Exciter field current limiter gain (<i>K</i><i><sub>H</sub></i>) (>= 0). Typical value = 92. |
| seve1 | Float | Exciter saturation function value at the corresponding exciter voltage, <i>V</i><i><sub>E1</sub></i>, back of commutating reactance (<i>S</i><i><sub>E</sub></i><i>[V</i><i><sub>E1</sub></i><i>])</i> (>= 0). Typical value = 0,214. |
| seve2 | Float | Exciter saturation function value at the corresponding exciter voltage, <i>V</i><i><sub>E2</sub></i>, back of commutating reactance (<i>S</i><i><sub>E</sub></i><i>[V</i><i><sub>E2</sub></i><i>]</i>) (>= 0). Typical value = 0,044. |
| ta | Seconds | Voltage regulator time constant (<i>T</i><i><sub>A</sub></i>) (>= 0). Typical value = 0,086. |
| tb | Seconds | Voltage regulator time constant (<i>T</i><i><sub>B</sub></i>) (>= 0). Typical value = 9. |
| tc | Seconds | Voltage regulator time constant (<i>T</i><i><sub>C</sub></i>) (>= 0). Typical value = 3. |
| te | Seconds | Exciter time constant, integration rate associated with exciter control (<i>T</i><i><sub>E</sub></i>) (> 0). Typical value = 1. |
| th | Seconds | Exciter field current limiter time constant (<i>T</i><i><sub>H</sub></i>) (> 0). Typical value = 0,08. |
| tj | Seconds | Exciter field current limiter time constant (<i>T</i><i><sub>J</sub></i>) (>= 0). Typical value = 0,02. |
| tk | Seconds | Voltage regulator time constant (<i>T</i><i><sub>K</sub></i>) (>= 0). Typical value = 0,18. |
| vamax | PU | Maximum voltage regulator output (<i>V</i><i><sub>AMAX</sub></i>) (> 0). Typical value = 75. |
| vamin | PU | Minimum voltage regulator output (V<sub>AMIN</sub>) (< 0). Typical value = -75. |
| ve1 | PU | Exciter alternator output voltages back of commutating reactance at which saturation is defined (<i>V</i><i><sub>E1</sub></i>) (> 0). Typical value = 7,4. |
| ve2 | PU | Exciter alternator output voltages back of commutating reactance at which saturation is defined (<i>V</i><i><sub>E2</sub></i>) (> 0). Typical value = 5,55. |
| vfelim | PU | Exciter field current limit reference (<i>V</i><i><sub>FELIM</sub></i>) (> 0). Typical value = 19. |
| vhmax | PU | Maximum field current limiter signal reference (<i>V</i><i><sub>HMAX</sub></i>) (> 0). Typical value = 75. |
| vrmax | PU | Maximum voltage regulator output (<i>V</i><i><sub>RMAX</sub></i>) (> 0). Typical value = 44. |
| vrmin | PU | Minimum voltage regulator output (<i>V</i><i><sub>RMIN</sub></i>) (< 0). Typical value = -36. |
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