Rectifier (Three-Phase)

Conversion of three-phase AC voltage to DC voltage.

blockType: AcausalElectricPowerSystems.Converters.ThreePhaseRectifier

Path in the library:

/Physical Modeling/Electrical/Semiconductors & Converters/Converters/Rectifier (Three-Phase)

Description

Block Rectifier (Three-Phase) Simulates a three-beam diode bridge circuit that converts a three-phase AC voltage to a DC voltage. The figure shows an equivalent circuit of a three-beam diode bridge. rectifier three phase

In the parameters group Charge Dynamics You can select the type of diode to be used in the three-shoulder bridge circuit. The table shows how to configure the parameter Model dynamics depending on your goals.

Goal Value for selection Block operation

Goal	Value for selection	Block operation
Prioritize simulation speed	`Diode with no dynamics`	Each arm of the bridge circuit uses a block Diode. The block dialog box does not display additional parameters.
Accurately indicate the charge dynamics in reverse mode	`Diode with charge dynamics`	Each arm of the bridge circuit uses a block with charge dynamics settings Diode. The block dialog box displays the parameters related to the block’s switching model.

Prioritize simulation speed

Diode with no dynamics

Each arm of the bridge circuit uses a block Diode. The block dialog box does not display additional parameters.

Accurately indicate the charge dynamics in reverse mode

Diode with charge dynamics

Each arm of the bridge circuit uses a block with charge dynamics settings Diode. The block dialog box displays the parameters related to the block’s switching model.

Ports

Conserving

# ~ — Three-phase port
electricity

Details

Input three-phase port.

Program usage name

port

# + — positive terminal
electricity

Details

The port connected to the positive terminal.

Program usage name

p

# – — negative terminal
electricity

Details

The port connected to the negative terminal.

Program usage name

n

Parameters

# Forward voltage — forward voltage
V | MV | kV | mV

Details

The minimum voltage required at the + and – ports of each diode so that the slope of the volt-ampere characteristic of the diode is equal to , where — parameter value On resistance.

Units	`V` \| `MV` \| `kV` \| `mV`
Default value	`0.8 V`
Program usage name	`V_f`
Evaluatable	Yes

# On resistance — resistance to open transition
Ohm | GOhm | MOhm | kOhm | mOhm

Details

The rate of voltage change relative to the current is higher than the forward voltage for each diode.

Units	`Ohm` \| `GOhm` \| `MOhm` \| `kOhm` \| `mOhm`
Default value	`0.001 Ohm`
Program usage name	`R_on`
Evaluatable	Yes

# Off conductance — closed junction conductivity
S | mS | nS | uS | 1/Ohm

Details

The conductivity of each reverse-biased diode.

Units	`S` \| `mS` \| `nS` \| `uS` \| `1/Ohm`
Default value	`1.0e-5 1/Ohm`
Program usage name	`G_off`
Evaluatable	Yes

Charge Dynamics

# Model dynamics — dynamics of the diode charge
Diode with no dynamics | Diode with charge dynamics

Details

The dynamics of the diode charge. The default value is Diode with no dynamics.

The following charge dynamics options are possible:

Diode with no dynamics
Diode with charge dynamics

Values	`Diode with no dynamics` \| `Diode with charge dynamics`
Default value	`Diode with no dynamics`
Program usage name	`model_dynamics`
Evaluatable	Yes

# Junction capacitance — transfer capacity
F | mF | nF | pF | uF

Details

The capacity of the diode junction.

Dependencies

To use this parameter, set for the parameter Model dynamics meaning Diode with charge dynamics.

Units	`F` \| `mF` \| `nF` \| `pF` \| `uF`
Default value	`50.0 nF`
Program usage name	`C_j`
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 Model dynamics meaning Diode with charge dynamics.

Units	`A` \| `MA` \| `kA` \| `mA` \| `nA` \| `pA` \| `uA`
Default value	`-235.0 A`
Program usage name	`i_rm`
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 when measuring the peak reverse current. This value must be greater than zero.

Dependencies

To use this parameter, set for the parameter Model dynamics meaning Diode with charge dynamics.

Units	`A` \| `MA` \| `kA` \| `mA` \| `nA` \| `pA` \| `uA`
Default value	`300.0 A`
Program usage name	`i_f`
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 Model dynamics meaning Diode with charge dynamics.

Units	`A/s` \| `A/us`
Default value	`-50.0 A/us`
Program usage name	`current_change_rate`
Evaluatable	Yes

# Reverse recovery time parameterization — type of reverse recovery time determination
Specify stretch factor | Specify reverse recovery time directly | Specify reverse recovery charge

Details

Defines the method for setting the reverse recovery time in the block. The default value is Specify reverse recovery time directly.

When selecting a value Specify stretch factor or Specify reverse recovery charge you specify the value that the block uses to calculate the reverse recovery time.

Dependencies

To use this parameter, set for the parameter Model dynamics meaning Diode with charge dynamics.

Values	`Specify stretch factor` \| `Specify reverse recovery time directly` \| `Specify reverse recovery charge`
Default value	`Specify stretch factor`
Program usage name	`t_rr_diode_parameterization`
Evaluatable	Yes

# 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 Model dynamics meaning Diode with charge dynamics, and for the parameter Reverse recovery time parameterization meaning Specify stretch factor.

Default value	`3.0`
Program usage name	`t_rr_factor`
Evaluatable	Yes

# Reverse recovery time, trr — reverse recovery time
d | s | hr | ms | ns | us | min

Details

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 reverse 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

Units	`d` \| `s` \| `hr` \| `ms` \| `ns` \| `us` \| `min`
Default value	`15.0 us`
Program usage name	`t_rr`
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 to calculate the parameter 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

Units	`C` \| `Ah` \| `mC` \| `nC` \| `uC` \| `MAh` \| `kAh` \| `mAh` \| `s*uA`
Default value	`1500.0 s*uA`
Program usage name	`Q_rr`
Evaluatable	Yes