Modelica.Electrical.Analog.Interfaces

Information

This package contains connectors and interfaces (partial models) for analog electrical components. The partial models contain typical combinations of pins, and internal variables which are often used. Furthermore, the thermal heat port is in this package which can be included by inheritance.

Package Content

Name	Description
Pin	Pin of an electrical component
PositivePin	Positive pin of an electric component
NegativePin	Negative pin of an electric component
TwoPin	Component with two electrical pins
OnePort	Component with two electrical pins p and n and current i from p to n
TwoPort	Component with two electrical ports, including current
ConditionalHeatPort	Partial model to include a conditional HeatPort in order to describe the power loss via a thermal network
AbsoluteSensor	Base class to measure the absolute value of a pin variable
RelativeSensor	Base class to measure a relative variable between two pins
VoltageSource	Interface for voltage sources
CurrentSource	Interface for current sources

Modelica.Electrical.Analog.Interfaces.Pin

Information

Pin is the basic electric connector. It includes the voltage which consists between the pin and the ground node. The ground node is the node of (any) ground device (Modelica.Electrical.Basic.Ground). Furthermore, the pin includes the current, which is considered to be positive if it is flowing at the pin into the device.

Contents

Name	Description
v	Potential at the pin [V]
i	Current flowing into the pin [A]

Modelica.Electrical.Analog.Interfaces.PositivePin

Information

Connectors PositivePin and NegativePin are nearly identical. The only difference is that the icons are different in order to identify more easily the pins of a component. Usually, connector PositivePin is used for the positive and connector NegativePin for the negative pin of an electrical component.

Contents

Name	Description
v	Potential at the pin [V]
i	Current flowing into the pin [A]

Modelica.Electrical.Analog.Interfaces.NegativePin

Information

Connectors PositivePin and NegativePin are nearly identical. The only difference is that the icons are different in order to identify more easily the pins of a component. Usually, connector PositivePin is used for the positive and connector NegativePin for the negative pin of an electrical component.

Contents

Name	Description
v	Potential at the pin [V]
i	Current flowing into the pin [A]

Modelica.Electrical.Analog.Interfaces.TwoPin

Information

TwoPin is a partial model with two pins and one internal variable for the voltage over the two pins. Internal currents are not defined. It is intended to be used in cases where the model which inherits TwoPin is composed by combining other components graphically, not by equations.

Connectors

Name	Description
p	Positive pin Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Analog.Interfaces.OnePort

Information

Superclass of elements which have two electrical pins: the positive pin connector p, and the negative pin connector n. It is assumed that the current flowing into pin p is identical to the current flowing out of pin n. This current is provided explicitly as current i.

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Analog.Interfaces.TwoPort

Information

TwoPort is a partial model that consists of two ports. Like OnePort each port has two pins. It is assumed that the current flowing into the positive pin is identical to the current flowing out of pin n. This currents of each port are provided explicitly as currents i1 and i2, the voltages respectively as v1 and v2.

Connectors

Name	Description
p1	Positive pin of the left port (potential p1.v > n1.v for positive voltage drop v1)
n1	Negative pin of the left port
p2	Positive pin of the right port (potential p2.v > n2.v for positive voltage drop v2)
n2	Negative pin of the right port

Modelica.Electrical.Analog.Interfaces.ConditionalHeatPort

Information

This partial model provides a conditional heating port for the connection to a thermal network.

• If useHeatPort is set to false (default), no heat port is available, and the thermal loss power flows internally to the ground. In this case, the parameter T specifies the fixed device temperature (the default for T = 20^oC).
• If useHeatPort is set to true, a heat port is available.

If this model is used, the loss power has to be provided by an equation in the model which inherits from ConditionalHeatingPort model (lossPower = ...). As device temperature T_heatPort can be used to describe the influence of the device temperature on the model behaviour.

Parameters

Name	Description
useHeatPort	=true, if HeatPort is enabled
T	Fixed device temperature if useHeatPort = false [K]

Connectors

Name	Description
heatPort

Modelica.Electrical.Analog.Interfaces.AbsoluteSensor

Information

The AbsoluteSensor is a partial model for converting values that can be calculated from one pin connector into a real valued signal. The special calculation has to be described in the model which inherits the AbsoluteSensor. It is often used in sensor devices. To be a true sensor the modeller has to take care that the sensor model does not influence the electrical behavior to be measured.

Connectors

Name	Description
p	Pin to be measured
y	Measured quantity as Real output signal

Modelica.Electrical.Analog.Interfaces.RelativeSensor

Information

The RelaticeSensor is a partial model for converting values that can be calculated from two pin connectors into a real valued signal. The special calculation has to be described in the model which inherits the RelativeSensor. It is often used in sensor devices. To be a true sensor the modeller has to take care that the sensor model does not influence the electrical behavior to be measured.

Connectors

Name	Description
p	Positive pin
n	Negative pin
y	Measured quantity as Real output signal

Modelica.Electrical.Analog.Interfaces.VoltageSource

Information

The VoltageSource partial model prepares voltage sources by providing the pins, and the offset and startTime parameters, which are the same at all voltage sources. The source behavior is taken from Modelica.Blocks signal sources by inheritance and usage of the replaceable possibilities.

Parameters

Name	Description
offset	Voltage offset [V]
startTime	Time offset [s]
signalSource

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin

Modelica.Electrical.Analog.Interfaces.CurrentSource

Information

The CurrentSource partial model prepares current sources by providing the pins, and the offset and startTime parameters, which are the same at all current sources. The source behavior is taken from Modelica.Blocks signal sources by inheritance and usage of the replaceable possibilities.

Parameters

Name	Description
offset	Current offset [A]
startTime	Time offset [s]
signalSource

Connectors

Name	Description
p	Positive pin (potential p.v > n.v for positive voltage drop v)
n	Negative pin