DVM - Design Verification Module
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DVM - Design Verification Module
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The AC fixed Input Source models a fixed line voltage with fixed frequency. This source is used in a number of test objectives, including:
In this Topic Hide
Model Name |
AC Fixed Input Source |
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Simulator |
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This device is compatible with both the SIMetrix and SIMPLIS simulators. |
Parts Selector |
DVM Sources DVM Input Source (w/ AC Line Support) |
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Symbol Library |
None - the symbol is automatically generated when placed or edited. |
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Model File |
SIMPLIS_DVM_ADVANCED.lb |
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| Subcircuit Name | SIMPLIS_DVM_ADVANCED_SOURCE_AC_FIXED | |
| Schematic |  |
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The following table explains the relevant parameters.
Parameter Name |
Default |
Data Type |
Range |
Units |
Parameter Description |
AC_VOLTAGE1 |
115 |
Real |
min: 0 |
V | The RMS value of the source |
DC_VOLTAGE |
5 |
Real |
V | The DC voltage offset of the source | |
FREQUENCY |
50 |
Real |
min: >0 | Hz | The frequency of the source |
F_CORNER |
1Meg |
Real |
min: >0 | Hz |
The corner frequency for the internal low pass filter. The number of poles is set by the N_ORDER parameter. |
LINE_PHASEANGLE |
0 |
Real |
0- 360 | ° | Sets the source phase angle at time=0. Most often used in three phase systems to set the phase angle of each phase. |
N_ORDER |
0 |
Real |
0 - 3 | The number of poles in the filter. Set to 0 to remove the filter from the design. | |
SLEW_RATE |
10Meg |
Real |
max: | V/s | The maximum slew rate of the voltage source |
SOURCE_INDUCTANCE |
795.8u |
Real |
min: 0 | H |
Sets the inductance of the line source |
SOURCE_NAME |
SRC |
String |
n/a |
n/a |
Name of the DVM source. This name cannot contain spaces. |
SOURCE_RESISTANCE |
0.4 |
Real |
min:0 |
Ω |
Sets the source resistance of the source. |
To set a managed DVM source to use the AC Fixed subcircuit, the source symbol must be set to support AC line sources. Then, to set the source definition to a AC Fixed source, place a AcFixed() testplan entry in a Source column.
The AcFixed() testplan entry has the following syntax with the arguments taken from the list of parameters above.
AcFixed(REF, LINE_RANGE, VOLTAGE, FREQUENCY)
AcFixed(REF, LINE_RANGE, VOLTAGE, FREQUENCY, OPTIONAL_PARAMETER_STRING)
| Argument | Range | Description |
REF |
n/a |
The actual reference designator of the DVM Source or the generic syntax of INPUT:n where n is an integer indicating a position in the list of managed DVM sources. |
LINE_RANGE |
LL or HL |
The line range to select the correct symbolic voltage value. This can only be the two strings LL or HL. |
VOLTAGE |
min:0 |
The RMS voltage for the input source. The voltage can be a numeric value or a symbolic value, such as a percentage of nominal input voltage. Symbolic values use the LINE_RANGE parameter to find the correct symbolic value. |
FREQUENCY |
min: > 0 |
The AC line frequency of the input source. This is used to both set the frequency of the input source and to set the simulation timing. The frequency can be a numeric or a symbolic value, such as F_High or F_Low. |
OPTIONAL_PARAMETER_STRING |
n/a |
Parameter string with any of the other parameters from the parameter table above* |
* If more than one parameter is specified, join the parameter key-value pairs with a space, as shown in the example below. The order of the parameter names does not matter.
This example uses the optional parameter LINE_PHASEANGLE set to 90°, which sets the line source to start at the peak of the sine wave.
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