SinglePhaseTriac

Triode for alternating current

Diagram

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

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 (5)

Ron

Value: 1e-5

Type: Resistance (Ω)

Description: Forward state-on differential resistance (closed resistance)

Goff

Value: 1e-5

Type: Conductance (S)

Description: Backward state-off conductance (opened conductance)

Vknee

Value: 0

Type: Voltage (V)

Description: Forward threshold voltage

useHeatPort

Value: false

Type: Boolean

Description: = true, if heatPort is enabled

T

Value: 293.15

Type: Temperature (K)

Description: Fixed device temperature if useHeatPort = false

Connectors (5)

p

Type: PositivePin

Description: Positive electrical pin

n

Type: NegativePin

Description: Negative electrical pin

heatPort

Type: HeatPort_a

Description: Conditional heat port

fire1

Type: BooleanInput

fire2

Type: BooleanInput

Components (2)

thyristor1

Type: IdealThyristor

thyristor2

Type: IdealThyristor

Used in Components (2)

Dimmer

Modelica.Electrical.PowerConverters.Examples.ACAC.ExampleTemplates

Dimmer including control

PolyphaseTriac

Modelica.Electrical.PowerConverters.ACAC

Triodes for alternating current