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Thyristor

Simple Thyristor Model

Wolfram Language

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SystemModel["Modelica.Electrical.Analog.Semiconductors.Thyristor"]
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Information

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

This is a simple thyristor model with three pins: Anode, Cathode and Gate. There are three operating modes:conducting, blocking and reverse breakthrough.
As long as the thyristor is in blocking mode it behaves like a linear resistance Roff=VDRM^2/(VTM*IH). But if the voltage between anode and cathode exceeds VDRM or a positive gate current flows for a sufficient time the mode changes to conducting mode. The model stays in conducting mode until the anode current falls below the holding current IH. There is no way to switch off the thyristor via the gate. If the voltage between anode and cathode is negative, the model represents a diode (parameters Vt, Nbv) with reverse breakthrough voltage VRRM.

The dV/dt switch on is not taken into account in this model. The gate circuit is not influenced by the main circuit.

Connectors (4)

heatPort

Type: HeatPort_a

Description: Conditional heat port

Anode

Type: PositivePin

Description:

Cathode

Type: NegativePin

Description:

Gate

Type: PositivePin

Description:

Parameters (18)

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

VDRM

Value: 100

Type: Voltage (V)

Description: Forward breakthrough voltage

VRRM

Value: 100

Type: Voltage (V)

Description: Reverse breakthrough voltage

IDRM

Value: 0.1

Type: Current (A)

Description: Saturation current

VTM

Value: 1.7

Type: Voltage (V)

Description: Conducting voltage

IH

Value: 6e-3

Type: Current (A)

Description: Holding current

ITM

Value: 25

Type: Current (A)

Description: Conducting current

VGT

Value: 0.7

Type: Voltage (V)

Description: Gate trigger voltage

IGT

Value: 5e-3

Type: Current (A)

Description: Gate trigger current

TON

Value: 1e-6

Type: Time (s)

Description: Switch on time

TOFF

Value: 15e-6

Type: Time (s)

Description: Switch off time

Vt

Value: 0.04

Type: Voltage (V)

Description: Voltage equivalent of temperature (kT/qn)

Nbv

Value: 0.74

Type: Real

Description: Reverse Breakthrough emission coefficient

Von

Value: 5

Type: Voltage (V)

Description:

Voff

Value: 1.5

Type: Voltage (V)

Description:

Ron

Value: (VTM - 0.7) / ITM

Type: Resistance (Ω)

Description: Forward conducting mode resistance

Roff

Value: VDRM ^ 2 / VTM / IH

Type: Resistance (Ω)

Description: Blocking mode resistance

Used in Examples (1)

ThyristorBehaviourTest

Thyristor demonstration example

Used in Components (1)

SimpleTriac

Simple triac, based on Semiconductors.Thyristor model