Modelica.Electrical.Analog.Basic.Resistor

Ideal linear electrical resistor

Modelica.Electrical.Analog.Basic.Resistor

Information

The linear resistor connects the branch voltage v with the branch current i by i*R = v. The Resistance R is allowed to be positive, zero, or negative.

Extends from Modelica.Electrical.Analog.Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n), Modelica.Electrical.Analog.Interfaces.ConditionalHeatPort (Partial model to include a conditional HeatPort in order to describe the power loss via a thermal network).

Parameters

Type	Name	Default	Description
Resistance	R		Resistance at temperature T_ref [Ohm]
Temperature	T_ref	300.15	Reference temperature [K]
LinearTemperatureCoefficient	alpha	0	Temperature coefficient of resistance (R_actual = R(1 + alpha(T_heatPort - T_ref)) [1/K]
Boolean	useHeatPort	false	=true, if heatPort is enabled
Temperature	T	T_ref	Fixed device temperature if useHeatPort = false [K]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin
HeatPort_a	heatPort	Conditional heat port

Modelica definition

model Resistor "Ideal linear electrical resistor" parameter SI.Resistance R(start=1) "Resistance at temperature T_ref"; parameter SI.Temperature T_ref=300.15 "Reference temperature"; parameter SI.LinearTemperatureCoefficient alpha=0 "Temperature coefficient of resistance (R_actual = R*(1 + alpha*(T_heatPort - T_ref))"; extends Modelica.Electrical.Analog.Interfaces.OnePort; extends Modelica.Electrical.Analog.Interfaces.ConditionalHeatPort(T=T_ref); SI.Resistance R_actual "Actual resistance = R*(1 + alpha*(T_heatPort - T_ref))"; equation assert((1 + alpha*(T_heatPort - T_ref)) >= Modelica.Constants.eps, "Temperature outside scope of model!"); R_actual = R*(1 + alpha*(T_heatPort - T_ref)); v = R_actual*i; LossPower = v*i; end Resistor;

Modelica.Electrical.Analog.Basic.Inductor

Ideal linear electrical inductor

Modelica.Electrical.Analog.Basic.Inductor

Information

The linear inductor connects the branch voltage v with the branch current i by v = L * di/dt. The Inductance L is allowed to be positive, or zero.

Extends from Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Type	Name	Default	Description
Inductance	L		Inductance [H]

Connectors

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

Modelica definition

model Inductor "Ideal linear electrical inductor" extends Interfaces.OnePort(i(start=0)); parameter SI.Inductance L(start=1) "Inductance"; equation L*der(i) = v; end Inductor;

Modelica.Electrical.Analog.Basic.Capacitor

Ideal linear electrical capacitor

Modelica.Electrical.Analog.Basic.Capacitor

Information

The linear capacitor connects the branch voltage v with the branch current i by i = C * dv/dt. The Capacitance C is allowed to be positive or zero.

Extends from Interfaces.OnePort (Component with two electrical pins p and n and current i from p to n).

Parameters

Type	Name	Default	Description
Capacitance	C		Capacitance [F]

Connectors

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

Modelica definition

model Capacitor "Ideal linear electrical capacitor" extends Interfaces.OnePort(v(start=0)); parameter SI.Capacitance C(start=1) "Capacitance"; equation i = C*der(v); end Capacitor;

Modelica.Electrical.Analog.Basic.Ground

Ground node

Modelica.Electrical.Analog.Basic.Ground

Information

Ground of an electrical circuit. The potential at the ground node is zero. Every electrical circuit has to contain at least one ground object.

Connectors

Type	Name	Description
Pin	p

Modelica definition

model Ground "Ground node" Interfaces.Pin p; equation p.v = 0; end Ground;

Modelica.Electrical.Analog.Basic.VariableResistor

Ideal linear electrical resistor with variable resistance

Modelica.Electrical.Analog.Basic.VariableResistor

Information

The linear resistor connects the branch voltage v with the branch current i by
i*R = v
The Resistance R is given as input signal.

Attention!!!
It is recommended that the R signal should not cross the zero value. Otherwise depending on the surrounding circuit the probability of singularities is high.

Parameters

Type	Name	Default	Description
Temperature	T_ref	300.15	Reference temperature [K]
LinearTemperatureCoefficient	alpha	0	Temperature coefficient of resistance (R_actual = R(1 + alpha(T_heatPort - T_ref)) [1/K]
Boolean	useHeatPort	false	=true, if heatPort is enabled
Temperature	T	T_ref	Fixed device temperature if useHeatPort = false [K]

Connectors

Type	Name	Description
PositivePin	p	Positive pin (potential p.v > n.v for positive voltage drop v)
NegativePin	n	Negative pin
HeatPort_a	heatPort	Conditional heat port
input RealInput	R	[Ohm]

Modelica definition

model VariableResistor "Ideal linear electrical resistor with variable resistance" parameter SI.Temperature T_ref=300.15 "Reference temperature"; parameter SI.LinearTemperatureCoefficient alpha=0 "Temperature coefficient of resistance (R_actual = R*(1 + alpha*(T_heatPort - T_ref))"; extends Modelica.Electrical.Analog.Interfaces.OnePort; extends Modelica.Electrical.Analog.Interfaces.ConditionalHeatPort(T=T_ref); SI.Resistance R_actual "Actual resistance = R*(1 + alpha*(T_heatPort - T_ref))"; Modelica.Blocks.Interfaces.RealInput R(unit="Ohm"); equation assert((1 + alpha*(T_heatPort - T_ref)) >= Modelica.Constants.eps, "Temperature outside scope of model!"); R_actual = R*(1 + alpha*(T_heatPort - T_ref)); v = R_actual*i; LossPower = v*i; end VariableResistor;

Automatically generated Mon Sep 11 16:11:50 2017.