modelSinglePhaseTriac

Triode for alternating current

Extends from Modelica.Electrical.Analog.Interfaces.TwoPin (Component with two electrical pins).

Information

Simplified model of a triode for alternating current, built from two antiparallel thyristors. thyristor1 has to be fired during the positive halfwave of the voltage. thyristor2 has to be fired during the negative halfwave of the voltage.

Note: A real triac is fired in positive direction (thyristor1) by a positive gate current and in negative direction (thyristor2) by a negative gate current. The triac goes in blocking condition when the current falls to zero.

This behaviour is simulated by the two firing gates fire1 and fire2:

fire1=false and fire2=false: gate current = 0, stay in blocking condition
fire1=true and fire2=false: gate current > 0, fire thyristor1
fire1=false and fire2=true : gate current < 0, fire thyristor2
fire1=true and fire2=true : forbidden

Parameters

Type	Name	Default	Description
SI.Resistance	Ron	1e-5	Forward state-on differential resistance (closed resistance)
SI.Conductance	Goff	1e-5	Backward state-off conductance (opened conductance)
SI.Voltage	Vknee	0	Forward threshold voltage
Boolean	useHeatPort	false	= true, if heatPort is enabled
SI.Temperature	T	293.15	Fixed device temperature if useHeatPort = false

Connectors

Type	Name	Description
PositivePin	p (from TwoPin)	Positive electrical pin
NegativePin	n (from TwoPin)	Negative electrical pin
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	heatPort	Conditional heat port
Modelica.Blocks.Interfaces.BooleanInput	fire1
Modelica.Blocks.Interfaces.BooleanInput	fire2

Components

Type	Name	Default	Description
SI.Voltage	v (from TwoPin)		Voltage drop of the two pins (= p.v - n.v)
SI.Current	i	p.i	Current flowing from pin p to pin n
Modelica.Electrical.Analog.Ideal.IdealThyristor	thyristor1
Modelica.Electrical.Analog.Ideal.IdealThyristor	thyristor2