DVM - Design Verification Module

AC Startup Input Source

The AC startup input simulates the initial startup of a AC line source. The delay before the startup is programmable as are the filter and slew rate limiter parameters which affect the simulated waveshape. The AC Startup Source is used in the LineStartup() Test Objective.

In this Topic Hide

Model Name

AC Startup Input Source

Simulator

This device is compatible with both the SIMetrix and SIMPLIS simulators.

Parts Selector
Menu Location

DVM ▶ Source ▶ DVM Input Source (w/ AC Line Support)

Symbol Library

None - the symbol is automatically generated when placed or edited.

Model File

SIMPLIS_DVM_ADVANCED.lb

Subcircuit Name SIMPLIS_DVM_ADVANCED_SOURCE_AC_STARTUP
Schematic DVM AC Startup Source

AC Startup Input Source Parameters

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

Sets the source resistance of the source.

TIME_DELAY

10u

Real

min:0 s Sets the time delay before the startup source is activated.

Testplan Entry

To set a managed DVM source to use the AC Startup subcircuit, the source symbol must be set to support AC line sources. Then, to set the source definition to a AC Startup source, place a AcStartup() testplan entry in a Source column.

The AcStartup()  testplan entry has the following syntax with the arguments taken from the list of parameters above.

AcStartup(REF, LINE_RANGE, VOLTAGE, FREQUENCY)
AcStartup(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.

Waveforms

This example uses the optional parameter LINE_PHASEANGLE set to 90°, and a time delay before the source starts. The dotted curve represents the source prior to the startup time, which is set by the TIME_DELAY parameter. For simulation times greater than the TIME_DELAY, the source is a fixed AC sine wave.

 

© 2015 simplistechnologies.com | All Rights Reserved