Modelica.Electrical.PowerConverters.ACDC.Control

Control components for rectifiers

Information

A generic controller with signal input and 2*m firing signals is provided in Signal2mPulse, where m is the arbitrary number of phases. Additional topology specific controllers with electrical connectors are also included.

Filters

Each controller is equipped with an optional filter to filter the input voltages. By default the filter is enabled.

Such filter is needed if the electrical grid includes a significant voltage drop across the grid impedance distorting the input voltage wave form of the rectifier. The filter included in the PowerConverters library is first order filter with additional compensation of the filter specific phase lag. However, it important to note that the transients of the filters may cause some initial effects which deteriorate after certain periods.

Enable

The topology specific controllers allow enabling and disabling of the firing signals. The internal enabling signal of the controllers is either derived from the parameter constantEnable, if useConstantEnable = true. For if useConstantEnable = false the internal enabling signal is taken from the optional signal input enable.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name Description
Modelica.Electrical.PowerConverters.ACDC.Control.Signal2mPulse Signal2mPulse Generic control of 2*m pulse rectifiers
Modelica.Electrical.PowerConverters.ACDC.Control.VoltageBridge2Pulse VoltageBridge2Pulse Control of 2 pulse bridge rectifier
Modelica.Electrical.PowerConverters.ACDC.Control.VoltageBridge2mPulse VoltageBridge2mPulse Control of 2*m pulse bridge rectifier
Modelica.Electrical.PowerConverters.ACDC.Control.VoltageCenterTap2mPulse VoltageCenterTap2mPulse Control of 2*m pulse center tap rectifier
Modelica.Electrical.PowerConverters.ACDC.Control.Filter Filter PT1 + all-pass filter

Modelica.Electrical.PowerConverters.ACDC.Control.Signal2mPulse Modelica.Electrical.PowerConverters.ACDC.Control.Signal2mPulse

Generic control of 2*m pulse rectifiers

Information

General information about controllers is summarized in Control.

Extends from PowerConverters.Icons.Control (Control icon).

Parameters

NameDescription
mNumber of phases
useConstantFiringAngleUse constant firing angle instead of signal input
constantFiringAngleFiring angle [rad]
fFrequency [Hz]
firingAngleMaxMaximum firing angle [rad]
firingAngleMinMinimum firing angle [rad]
Filter
useFilterEnable use of filter
fCutCut off frequency of filter [Hz]
vStart[m]Start voltage of filter output [V]

Connectors

NameDescription
firingAngleFiring angle [rad]
fire_p[m] 
fire_n[m] 
v[m]Voltages [V]

Modelica.Electrical.PowerConverters.ACDC.Control.VoltageBridge2Pulse Modelica.Electrical.PowerConverters.ACDC.Control.VoltageBridge2Pulse

Control of 2 pulse bridge rectifier

Information

General information about controllers is summarized in Control.

This model provides two firing signal for Graetz bridge thyristor and half bridge rectifiers. The boolean signal fire_p is assigned to the thyristors connected with the positive DC output pin. The boolean signal fire_n is assigned to the thyristors connected with the negative DC output pin.

Extends from Icons.Control (Control icon).

Parameters

NameDescription
fFrequency [Hz]
useConstantFiringAngleUse constant firing angle instead of signal input
constantFiringAngleFiring angle [rad]
firingAngleMaxMaximum firing angle [rad]
Filter
useFilterEnable use of filter
fCutCut off frequency of filter [Hz]
vStartStart voltage of filter output [V]

Connectors

NameDescription
firingAngleFiring angle [rad]
ac_p 
ac_n 
fire_p 
fire_n 

Modelica.Electrical.PowerConverters.ACDC.Control.VoltageBridge2mPulse Modelica.Electrical.PowerConverters.ACDC.Control.VoltageBridge2mPulse

Control of 2*m pulse bridge rectifier

Information

General information about controllers is summarized in Control.

Half of the semiconductors of the 2*m pulse bridge rectifier are connected with the positive DC output pin (firing signal fire_p). The other half of the semiconductors is connected with the negative DC output pin (firing signal fire_n). Parameter m indicates the number of phases.

Extends from Icons.Control (Control icon).

Parameters

NameDescription
mNumber of phases
fFrequency [Hz]
useConstantFiringAngleUse constant firing angle instead of signal input
constantFiringAngleFiring angle [rad]
firingAngleMaxMaximum firing angle [rad]
Filter
useFilterEnable use of filter
fCutCut off frequency of filter [Hz]
vStart[m]Start voltage of filter output [V]

Connectors

NameDescription
firingAngleFiring angle [rad]
ac 
fire_p[m] 
fire_n[m] 

Modelica.Electrical.PowerConverters.ACDC.Control.VoltageCenterTap2mPulse Modelica.Electrical.PowerConverters.ACDC.Control.VoltageCenterTap2mPulse

Control of 2*m pulse center tap rectifier

Information

General information about controllers is summarized in Control.

Extends from Icons.Control (Control icon).

Parameters

NameDescription
mNumber of phases
fFrequency [Hz]
useConstantFiringAngleUse constant firing angle instead of signal input
constantFiringAngleFiring angle [rad]
firingAngleMaxMaximum firing angle [rad]
Filter
useFilterEnable use of filter
fCutCut off frequency of filter [Hz]
vStart[m]Start voltage of filter output [V]

Connectors

NameDescription
firingAngleFiring angle [rad]
ac 
fire_p[m] 
fire_n[m] 

Modelica.Electrical.PowerConverters.ACDC.Control.Filter Modelica.Electrical.PowerConverters.ACDC.Control.Filter

PT1 + all-pass filter

Information

First order filter with cut-off frequency fCut. The phase shift of the filter is compensated by a series of two first order all-pass filters tuned on supply frequency f.

Extends from Modelica.Blocks.Interfaces.SISO (Single Input Single Output continuous control block).

Parameters

NameDescription
fMains Frequency [Hz]
fCutCut off frequency [Hz]
yStartStart value of output

Connectors

NameDescription
uConnector of Real input signal
yConnector of Real output signal
Automatically generated Thu Oct 1 16:07:44 2020.