IGBT (Ideal, Switching)
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An ideal bipolar transistor with an isolated gate for switching circuits.
blockType: AcausalElectricPowerSystems.Semiconductors.Ideal.IGBT
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Description
Block IGBT (Ideal, Switching) simulates an ideal Insulated-gate bipolar transistor (IGBT) for switching circuits. The IGBT switching characteristic is such that if the gate-emitter voltage exceeds a preset threshold voltage , then the IGBT is in an open state. Otherwise, the device is in a closed state. This figure shows a typical volt-ampere characteristic.:
In the open state, the collector-emitter channel behaves like a linear diode with a direct voltage drop. and resistance .
In the closed state, the collector-emitter channel behaves like a linear resistor with low conductivity. .
The defining equations can be written as
if and ,
in all other cases ,
where
-
— collector-emitter voltage;
-
— direct voltage;
-
— gate-emitter voltage;
-
— threshold voltage;
-
— collector-emitter current;
-
— resistance in the open state;
-
— conductivity in the closed state.
Built-in protective diode option
Using the parameters Integral Diode, an internal diode can be connected between the emitter and the collector. The built-in diode protects the device by providing a conduction channel for reverse current, which can occur when the voltage to the inductive load is abruptly cut off.
Set the parameter value Integral protection diode depending on the purpose.
Goal | Value for selection | Internal protective diode |
---|---|---|
The priority of the simulation speed. |
|
An internal block is being added Diode (Advanced). |
The priority of modeling accuracy is to accurately indicate the charge dynamics in the reverse mode. |
|
An indoor unit is being added Diode (Advanced) taking into account the charge dynamics. |
Simulation of the gate port and thermal effects
You can choose a directional input or electrical port to control the gate and use the thermal port to simulate the heat generated by switching processes and conduction losses. To select the shutter control port, set the parameter Gate-control port meaning Signal control port
or Electrical control port
. To use the thermal port, check the box Enable thermal port.
Heat losses
Switching losses are the main sources of thermal losses in semiconductors. During each on-off switch, the parasitic elements of the transistor accumulate and then dissipate energy.
Switching losses depend on the voltage in the closed state and the current in the open state. When switching on a switching device, the power loss depends on the initial voltage in the closed state on the device and the final current in the open state when the device is fully open. Similarly, when the switching device is turned off, the power loss depends on the initial current in the open state on the device and the final voltage in the closed state when the device is completely closed. You can choose when to measure the current and voltage that the unit uses to calculate power-on and power-off losses. For most circuits, measurements can be carried out during on or off operation.:
-
Switching losses ;
-
Shutdown losses .
This unit accounts for switching losses by increasing the transition temperature by an amount equal to the losses divided by the total heat capacity of the transition. It is necessary to specify the energy dissipated during one turn on and one turn off. It is also necessary to specify the corresponding values of voltage in the closed state and current in the open state, at which losses are calculated. You can parameterize the power-on loss depending on the available data. Use tabular data, if available.
-
To set the scalar value of the power-on and power-off losses, set the parameter On-state behavior and switching losses meaning
Specify constant values
. The value of the parameters Switch-on loss and Switch-off loss the amount of losses is set. The unit scales voltage losses in the closed state and current in the open state. -
To set the power-on and power-off losses as a function of the junction temperature and the current in the open state, set the parameter On-state behavior and switching losses meaning
Tabulate
. Parameters Switch-on loss, Eon(Tj,Ice) and Switch-off loss, Eoff(Tj,Ice) the amount of losses is set. The unit scales voltage losses in the closed state.
If you are using a fixed-step solver, then the shortest on or off pulse that supports recording switching losses is three time steps. If the pulse is shorter than three steps, the unit does not register switching losses. If you are using tabular data to model switching losses or reverse recovery losses, then make sure that the temperature and current are within the range you specified. If you do not define a realistic thermal model, for example, if the heat capacity of the junction or the conductivity between the junction and the housing is too low, then the temperature may exceed the range you specified, which may lead to extrapolation of losses to non-physical values. |
Ports
Conserving
#
C
—
collector
electricity
Details
The port connected to the collector.
Program usage name |
|
#
E
—
The emitter
electricity
Details
The port associated with the emitter.
Program usage name |
|
#
H
—
thermal port
warmth
Details
The thermal port.
Dependencies
To use this port, check the box Enable thermal port.
Program usage name |
|
#
G
—
the shutter
electricity
Details
The port connected to the gate.
Dependencies
To enable this port, set the parameter Gate-control port meaning Electrical control port
.
Program usage name |
|
Input
#
G
—
the shutter
scalar
Details
The port connected to the gate.
Dependencies
To enable this port, set the parameter Gate-control port meaning Signal control port
.
Data types |
|
Complex numbers support |
No |
Parameters
Main
#
Gate-control port —
option to specify the type of shutter port
Signal control port
| Electrical control port
Details
Option to specify the gate control port of the transistor:
-
Signal control port
— The unit uses a directional input port to control the shutter; -
Electrical control port
— The unit uses a non-directional electrical port to control the shutter.
Values |
|
Default value |
|
Program usage name |
|
Evaluatable |
No |
#
Forward voltage, Vf —
forward voltage
V
| MV
| kV
| mV
Details
The minimum voltage across the collector and emitter required to ensure that the angle of inclination of the volt-ampere characteristic of the transistor is equal to , where — parameter value On-state resistance.
Dependencies
To use this option, uncheck the box. Enable thermal port.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
On-state resistance —
resistance in the open state
Ohm
| GOhm
| MOhm
| kOhm
| mOhm
Details
The resistance of the open collector-emitter channel.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Off-state conductance —
closed state conductivity
S
| mS
| nS
| uS
| 1/Ohm
Details
Collector-emitter conductivity in the closed state. The value of this parameter should be less than , where — parameter value On-state resistance.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Threshold voltage, Vth —
Threshold voltage
V
| MV
| kV
| mV
Details
The gate-emitter threshold voltage. The device is switched on when the gate-emitter voltage exceeds this value.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
On-state behavior and switching losses —
operating mode behavior and switching losses
Specify constant values
| Tabulate
Details
Parameterization method for operating mode behavior and switching losses:
-
Specify constant values
— Use scalar values to set the output current and losses when switching on and off. The block assumes that the energy dissipated during a single on or off switch is linearly dependent on the voltage in the off state and the current in the on state. The block also assumes that losses are independent of temperature. -
Tabulate
— Use vectors to specify output current and temperature data. Use arrays to specify data about power-on and power-off losses.
Dependencies
To use this option, check the box Enable thermal port.
Values |
|
Default value |
|
Program usage name |
|
Evaluatable |
No |
#
On-state voltage, Vce(Tj,Ice) —
voltage in the open state
V
| MV
| kV
| mV
Details
The matrix of voltage drops on the device in an open conductive state. This parameter depends on the temperature Temperature vector, Tj and the final output current in the open state Collector-emitter current vector, Ice.
Dependencies
To use this option, check the box Enable thermal port, and for the parameter On-state behavior and switching losses set the value Tabulate
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Temperature vector, Tj —
temperature values
K
| degC
| degF
| degR
| deltaK
| deltadegC
| deltadegF
| deltadegR
Details
The vector of temperature values at which the voltage is set in the open state On-state voltage, Vce(Tj,Ice).
Dependencies
To use this option, check the box Enable thermal port, and for the parameter On-state behavior and switching losses set the value Tabulate
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Collector-emitter current vector, Ice —
collector-emitter current values
A
| MA
| kA
| mA
| nA
| pA
| uA
Details
The vector of collector-emitter current values at which the voltage is set in the open state On-state voltage, Vce(Tj,Ice). The first element must be zero.
Dependencies
To use this option, check the box Enable thermal port, and for the parameter On-state behavior and switching losses set the value Tabulate
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
Switching losses
#
Switch-on loss, Eon(Tj,Ice) —
switching loss matrix
Btu_IT
| J
| MJ
| MWh
| Wh
| eV
| kJ
| kWh
| mJ
| mWh
Details
Energy dissipated during a single switch-on as a function of temperature Temperature vector for switching losses, Tj and the final output current in the open state Collector-emitter current vector for switching losses, Ice.
Dependencies
To use this option, check the box Enable thermal port, and for the parameter On-state behavior and switching losses set the value Tabulate
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Switch-off loss, Eoff(Tj,Ice) —
shutdown loss matrix
Btu_IT
| J
| MJ
| MWh
| Wh
| eV
| kJ
| kWh
| mJ
| mWh
Details
Energy dissipated during a single shutdown as a function of temperature Temperature vector for switching losses, Tj and the final output current in the open state Collector-emitter current vector for switching losses, Ice.
Dependencies
To use this option, check the box Enable thermal port, and for the parameter On-state behavior and switching losses set the value Tabulate
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Temperature vector for switching losses, Tj —
vector of temperature values
K
| degC
| degF
| degR
| deltaK
| deltadegC
| deltadegF
| deltadegR
Details
The vector of temperature values at which the losses are set when switching on and off Switch-on loss, Eon(Tj,Ice) and Switch-off loss, Eoff(Tj,Ice).
Dependencies
To use this option, check the box Enable thermal port, and for the parameter On-state behavior and switching losses set the value Tabulate
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Collector-emitter current vector for switching losses, Ice —
collector-emitter current values
A
| MA
| kA
| mA
| nA
| pA
| uA
Details
Vector of collector-emitter current values at which switching losses are specified Switch-on loss, Eon(Tj,Ice). The first element must be zero.
Dependencies
To use this option, check the box Enable thermal port, and for the parameter On-state behavior and switching losses set the value Tabulate
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Switch-on loss —
switching losses
Btu_IT
| J
| MJ
| MWh
| Wh
| eV
| kJ
| kWh
| mJ
| mWh
Details
The energy dissipated during a single power-on.
Dependencies
To use this option, check the box Enable thermal port, and for the parameter On-state behavior and switching losses set the value Specify constant values
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Switch-off loss —
shutdown losses
Btu_IT
| J
| MJ
| MWh
| Wh
| eV
| kJ
| kWh
| mJ
| mWh
Details
The energy dissipated during a single shutdown.
Dependencies
To use this option, check the box Enable thermal port, and for the parameter On-state behavior and switching losses set the value Specify constant values
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Off-state voltage for switching loss data —
voltage in the closed state for loss data
V
| MV
| kV
| mV
Details
The output voltage of the device is in the closed state. This is the locking voltage at which the on and off losses are determined.
Dependencies
To use this option, check the box Enable thermal port.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
On-state current for switching loss data —
Output current
A
| MA
| kA
| mA
| nA
| pA
| uA
Details
The output current for which the on loss and off loss are determined.
Dependencies
To use this option, check the box Enable thermal port.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
Integral Diode
#
Integral protection diode —
internal protective diode (suppressor)
External Diode
| Diode with no dynamics
| Diode with charge dynamics
Details
If the check box is selected Enable thermal port, the value of this parameter is External Diode
.
If it is necessary to turn on the internal protective diode, then there are two possible options:
-
Diode with no dynamics
. -
Diode with charge dynamics
.
Dependencies
To use this option, uncheck the box. Enable thermal port.
Values |
|
Default value |
|
Program usage name |
|
Evaluatable |
No |
#
Forward voltage —
direct current voltage
V
| MV
| kV
| mV
Details
The minimum voltage required at the negative and positive ports of the unit in order for the gradient of the volt-ampere characteristic of the diode to be equal to 1/ , where — parameter value On resistance.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with no dynamics
or Diode with charge dynamics
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
On resistance —
resistance when switched on directly
Ohm
| GOhm
| MOhm
| kOhm
| mOhm
Details
The resistance of the diode is in the open state when the voltage is higher than the value set by the parameter Forward voltage.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with no dynamics
or Diode with charge dynamics
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Off conductance —
closed state conductivity
S
| mS
| nS
| uS
| 1/Ohm
Details
The conductivity of the diode when it is switched back on.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with no dynamics
or Diode with charge dynamics
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Junction capacitance —
transfer capacity
F
| mF
| nF
| pF
| uF
Details
The value of the capacitance characteristic of the transition from the depleted zone, acting as a dielectric and separating the connections of the anode and cathode.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with charge dynamics
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Peak reverse current, iRM —
peak reverse current
A
| MA
| kA
| mA
| nA
| pA
| uA
Details
The peak return current measured by the external test circuit. This value must be less than zero.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with charge dynamics
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Initial forward current when measuring iRM —
initial forward current during iRM measurement
A
| MA
| kA
| mA
| nA
| pA
| uA
Details
The initial forward current (at the initial moment of the switch-on time) when measuring the peak reverse current. This value must be greater than zero.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with charge dynamics
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Rate of change of current when measuring iRM —
the rate of change of current during iRM measurement
A/s
| A/us
Details
The rate of change of the current when measuring the peak reverse current. This value must be less than zero.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with charge dynamics
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Reverse recovery time parametrization —
type of reverse recovery time determination
Specify stretch factor
| Specify reverse recovery time directly
| Specify reverse recovery charge
Details
When selecting an option Specify stretch factor
or Specify reverse recovery charge
the value that is used by the block to calculate the reverse recovery time is specified.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with charge dynamics
.
Values |
|
Default value |
|
Program usage name |
|
Evaluatable |
No |
# Reverse recovery time stretch factor — the stretching coefficient of the reverse recovery time
Details
The value that the block uses for calculation Reverse recovery time, trr. This value must be greater than `1'. Specifying the stretching coefficient is an easier way to parameterize the reverse recovery time than specifying the reverse recovery charge. The higher the value of the stretching coefficient, the longer it takes for the reverse recovery current to dissipate.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with charge dynamics
, and for the parameter Reverse recovery time parametrization meaning Specify stretch factor
.
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Reverse recovery time, trr —
reverse recovery time
d
| s
| hr
| ms
| ns
| us
| min
Details
The amount of time it takes for a diode to turn off when the voltage across it reverses from forward bias to reverse.
The interval between the moment when the current initially passes through zero (when the diode turns off) and the moment when the current drops to less than 10% of the peak current. Parameter value Reverse recovery time, trr there must be more than the parameter value. Peak reverse current, iRM, divided by the parameter value Rate of change of current when measuring iRM.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with charge dynamics
, and for the parameter Reverse recovery time parametrization meaning Specify reverse recovery time directly
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Reverse recovery charge, Qrr —
reverse recovery charge
C
| Ah
| mC
| nC
| uC
| MAh
| kAh
| mAh
| s*uA
Details
The value that the block uses for calculation Reverse recovery time, trr. Use this parameter if the reverse recovery charge value is specified in the block parameters as the type of reverse recovery time determination instead of the reverse recovery time value.
The reverse recovery charge is the total charge that continues to dissipate after the diode is turned off. The value must be less than , where:
-
— the value specified for the parameter Peak reverse current, iRM;
-
— the value specified for the parameter Rate of change of current when measuring iRM.
Dependencies
To use this parameter, set for the parameter Integral protection diode meaning Diode with charge dynamics
, and for the parameter Reverse recovery time parametrization meaning Specify reverse recovery charge
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
Thermal Port
# Enable thermal port — turning on the heat port
Details
Select this option to use the thermal port of the unit and simulate the effect of the generated heat and the temperature of the device.
Default value |
|
Program usage name |
|
Evaluatable |
No |
#
Thermal network —
choosing an internal thermal model
Specify junction and case thermal parameters
| Cauer model
| Cauer model parameterized with Foster coefficients
| External
Details
Choose an internal thermal model:
-
Specify junction and case thermal parameters
; -
Cauer model
; -
Cauer model parameterized with Foster coefficients
; -
External
.
Values |
|
Default value |
|
Program usage name |
|
Evaluatable |
No |
#
Junction-case and case-ambient (or case-heatsink) thermal resistances, [R_JC R_CA] —
the vector of thermal resistances
K/W
Details
The vector [R_JC R_CA]
consists of two values of thermal resistance. The first value of `R_JC' is the thermal resistance between the junction and the housing. The second value, `R_CA', is the thermal resistance between the H port and the device body.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Specify junction and case thermal parameters
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Thermal resistances, [R1 R2 ... Rn] —
the vector of thermal resistances for the Kauer model
K/W
Details
Vector from the values of the thermal resistances represented by the Kauer elements in the heating network. All these values must be greater than zero.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Cauer model
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Thermal resistances, [R1 R2 ... Rn] —
the vector of thermal resistances for the Foster model
K/W
Details
Vector from the values of thermal resistances represented by the coefficients of the Foster model in the heating network. All these values must be greater than zero.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Cauer model parameterized with Foster coefficients
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Thermal mass parameterization —
parameterization of heat capacity
By thermal time constants
| By thermal mass
Details
Choose a method for setting the heat capacity:
-
By thermal time constants
— parameterization of heat capacity in terms of thermal time constants. This value is used by default. -
By thermal mass
— setting the heat capacity values.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Specify junction and case thermal parameters
, Cauer model
or Cauer model parameterized with Foster coefficients
.
Values |
|
Default value |
|
Program usage name |
|
Evaluatable |
No |
#
Junction and case thermal masses, [M_J M_C] —
vector of heat capacity values for the Kauer model
J/K
| kJ/K
Details
The vector [M_J M_C]
consists of two values of the heat capacity. The first value of M_J
is the heat capacity of the junction. The second value, `M_C', is the heat capacity of the housing.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Specify junction and case thermal parameters
, and for the parameter Thermal mass parameterization meaning By thermal mass
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Thermal masses, [M1 M2 ... Mn] —
vector of heat capacity values for the Kauer model
J/K
| kJ/K
Details
Vector from values of heat capacities, where this is the number of coefficients of the Kauer model in the heat network. All these values must be greater than zero.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Cauer model
, and for the parameter Thermal mass parameterization meaning By thermal mass
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Thermal masses, [M1 M2 ... Mn] —
the vector of heat capacity values for the Foster model
J/K
| kJ/K
Details
Vector from values of heat capacities, where this is the number of Foster elements in the heating network. All these values must be greater than zero.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Cauer model parameterized with Foster coefficients
, and for the parameter Thermal mass parameterization meaning By thermal mass
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Junction and case thermal time constants, [t_J t_C] —
vector of thermal time constants
d
| s
| hr
| ms
| ns
| us
| min
Details
The vector [t_J t_C]
consists of two values of the thermal time constants. The first value of t_J
is the thermal transition time constant. The second value, `t_C', is the thermal time constant of the housing.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Specify junction and case thermal parameters
, and for the parameter Thermal mass parameterization meaning By thermal time constants
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Thermal time constants, [t1 t2 ... tn] —
vector of thermal time constants for the Kauer model
d
| s
| hr
| ms
| ns
| us
| min
Details
Vector from values of thermal time constants, where this is the number of Kauer elements in the heating network. All these values must be greater than zero.
The value of the heat capacity is calculated as , where , and — heat capacity, thermal time constant and thermal resistance for - the go element of the Cowera.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Cauer model
, and for the parameter Thermal mass parameterization meaning By thermal time constants
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Thermal time constants, [t1 t2 ... tn] —
the vector of thermal time constants for the Foster model
d
| s
| hr
| ms
| ns
| us
| min
Details
Vector from values of thermal time constants, where this is the number of coefficients of the Foster model in the heating network. All these values must be greater than zero.
The value of the heat capacity is calculated as , where , and — heat capacity, thermal time constant and thermal resistance for - the go element of the Cowera.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Cauer model parameterized with Foster coefficients
, and for the parameter Thermal mass parameterization meaning By thermal time constants
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Junction and case initial temperatures, [T_J T_C] —
vector of thermal time constants
K
| degC
| degF
| degR
| deltaK
| deltadegC
| deltadegF
| deltadegR
Details
The vector [t_J t_C]
consists of two values of the thermal time constants. The first value of t_J
is the thermal transition time constant. The second value, `t_C', is the thermal time constant of the housing.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Specify junction and case thermal parameters
, and for the parameter Thermal mass parameterization meaning By thermal time constants
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Thermal masses initial temperatures, [T1 T2 ... Tn] —
initial temperature vector for the Kauer model
K
| degC
| degF
| degR
| deltaK
| deltadegC
| deltadegF
| deltadegR
Details
The vector of temperature values. It corresponds to the temperature difference for each heat capacity in the model.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Cauer model
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Initial node temperatures, [T1 T2 ... Tn] —
the initial temperature vector for the Foster model
K
| degC
| degF
| degR
| deltaK
| deltadegC
| deltadegF
| deltadegR
Details
The vector of absolute temperature values of each element of the Foster model.
Dependencies
To use this parameter, set for the parameter Thermal network meaning Cauer model parameterized with Foster coefficients
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |
#
Junction thermal mass —
the heat capacity of the transition
J/K
| kJ/K
Details
The heat capacity of the transition
Dependencies
To use this parameter, set for the parameter Thermal network meaning External
.
Units |
|
Default value |
|
Program usage name |
|
Evaluatable |
Yes |