OpenIPSL.NonElectrical.Continuous

Blocks that are described with continuous equations

Information

All of the transfer functions found in this package are also available in the Modelica Standard Library (MSL). However, some of the models require the time constants of the functions in this package to be set to zero. This is not supported by MSL and, thus, this is supported by functions in this package.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name	Description
DerivativeLag	Derivative lag transfer function block
IntegratorLimVar	Integrator with a non windup limiter and variable limits
LeadLag	Lead-Lag filter
LeadLagLim	Lead-Lag filter with a non-windup limiter
PI_No_Windup	PI controller with no wind-up
PID_No_Windup	PID controller with no wind-up
RampTrackingFilter	Ramp-tracking filter
SimpleLag	First order lag transfer function block
SimpleLagLim	First order lag transfer function block with a non windup limiter
SimpleLagLimVar	First order lag transfer function block with a non windup limiter and variable limits
SimpleLagRateLimBlock	First order lag transfer function block with a non windup limiter, rate limits and blocking input
SimpleLagRateLimVar	First order lag transfer function block with a non windup limiter, rate limits, variable output limits and blocking input
SimpleLead	First order lead transfer function block

OpenIPSL.NonElectrical.Continuous.DerivativeLag

Derivative lag transfer function block

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K	Gain
T	Time constant [s]
Initialization
y_start	Output start value
x_start	Start value of state variable

Connectors

Name	Description
u	Connector of Real input signal
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.IntegratorLimVar

Integrator with a non windup limiter and variable limits

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K	Gain
Initialization
y_start	Output start value

Connectors

Name	Description
u	Connector of Real input signal
y	Connector of Real output signal
outMax
outMin

OpenIPSL.NonElectrical.Continuous.LeadLag

Lead-Lag filter

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K	Gain
T1	Lead time constant [s]
T2	Lag time constant [s]
Initialization
y_start	Output start value
x_start	Start value of state variable

Connectors

Name	Description
u	Connector of Real input signal
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.LeadLagLim

Lead-Lag filter with a non-windup limiter

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K	Gain
T1	Lead time constant [s]
T2	Lag time constant [s]
outMax	Maximum output value
outMin	Minimum output value
Initialization
y_start	Output start value

Connectors

Name	Description
u	Connector of Real input signal
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.PI_No_Windup

PI controller with no wind-up

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K_P	Voltage regulator proportional gain [1]
K_I	Voltage regulator integral gain [1]
V_RMAX	Maximum regulator output [1]
V_RMIN	Minimum regulator output [1]
y_start_int	Initial output value [1]

Connectors

Name	Description
u	Connector of Real input signal
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.PID_No_Windup

PID controller with no wind-up

Information

Extends from PI_No_Windup (PI controller with no wind-up).

Parameters

Name	Description
K_P	Voltage regulator proportional gain [1]
K_I	Voltage regulator integral gain [1]
V_RMAX	Maximum regulator output [1]
V_RMIN	Minimum regulator output [1]
y_start_int	Initial output value [1]
add
K_D	Voltage regulator derivative gain [1]
T_D	Voltage regulator derivative channel time constant [s]

Connectors

Name	Description
u	Connector of Real input signal
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.RampTrackingFilter

Ramp-tracking filter

Information

This block is used by the PSS2A and PSS2B models under OpenIPSL.Electrical.Controls.PSSE.PSS. This implementation has been done starting from the block diagram descriptions from [PSSE-MODELS].

However, as noted in [Laera2022], in order to validate the implementation against PSS/E v.33's simulation output, further analysis of the actual model response in PSS/E revealed necessary changes that deviate from the block diagrams in [PSS-MODELS]. Consequently, the implementation herein should not be expected to comply with any other "generic" implementation or block diagram description, but to that implemented in PSS/E v.33.

For more information please refer to [Laera2022].

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
T_1
T_2
M	>=0, M*N<=8
N	>=0, M*N<=8
y_start	Output start value

Connectors

Name	Description
u	Connector of Real input signal
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.SimpleLag

First order lag transfer function block

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K	Gain
T	Lag time constant [s]
y_start	Output start value
Initialization
y	Connector of Real output signal

Connectors

Name	Description
u	Connector of Real input signal
Initialization
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.SimpleLagLim

First order lag transfer function block with a non windup limiter

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K	Gain
T	Lag time constant [s]
y_start	Output start value
outMax	Maximum output value
outMin	Minimum output value
Initialization
y	Connector of Real output signal

Connectors

Name	Description
u	Connector of Real input signal
Initialization
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.SimpleLagLimVar

First order lag transfer function block with a non windup limiter and variable limits

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K	Gain
T	Lag time constant [s]
y_start	Output start value
T_mod
Initialization
y	Connector of Real output signal

Connectors

Name	Description
u	Connector of Real input signal
outMax
outMin
Initialization
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.SimpleLagRateLimBlock

First order lag transfer function block with a non windup limiter, rate limits and blocking input

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K	Gain
T	Lag time constant [s]
outMax	Maximum output value
outMin	Minimum output value
rmin	Minimum rate limit
rmax	Maximum rate limit
Initialization
y	Connector of Real output signal
y_start	Output start value

Connectors

Name	Description
u	Connector of Real input signal
Block
Initialization
y	Connector of Real output signal

OpenIPSL.NonElectrical.Continuous.SimpleLagRateLimVar

First order lag transfer function block with a non windup limiter, rate limits, variable output limits and blocking input

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
T	Lag time constant [s]
rmin	Minimum rate limit
rmax	Maximum rate limit
Initialization
y_start	Output start value

Connectors

Name	Description
u	Connector of Real input signal
y	Connector of Real output signal
outMin
outMax

OpenIPSL.NonElectrical.Continuous.SimpleLead

First order lead transfer function block

Information

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

Name	Description
K	Gain
T	Lead time constant [s]
Initialization
y_start	Output start value

Connectors

Name	Description
u	Connector of Real input signal
y	Connector of Real output signal

Automatically generated Thu Feb 26 06:56:11 2026.