Modelica.Electrical.PowerConverters.DCDC

DC to DC converters

Information

General information about DC/DC converters can be found at the DC/DC converter concept

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

Package Content

Name	Description
Control	Control components for DC to DC converters
ChopperStepDown	Step down chopper
ChopperStepUp	Step up chopper
ChopperBuckBoost	Bidirectional chopper
HBridge	H bridge (four quadrant converter)

Modelica.Electrical.PowerConverters.DCDC.ChopperStepDown

Step down chopper

Information

This is a conventional step down chopper (buck converter) model. It consists of a transistor and free wheeling diode.

Extends from Icons.Converter (Converter icon), PowerConverters.Interfaces.DCDC.DCtwoPin1 (Positive and negative pins of side 1), PowerConverters.Interfaces.DCDC.DCtwoPin2 (Positive and negative pins of side 2), Modelica.Electrical.Analog.Interfaces.ConditionalHeatPort (Partial model to include a conditional HeatPort in order to describe the power loss via a thermal network), Interfaces.Enable.Enable1 (Partial model providing enable parameter and optional enable input for one firing signal).

Parameters

Connectors

Modelica.Electrical.PowerConverters.DCDC.ChopperStepUp

Step up chopper

Information

This is a conventional step up chopper (boost converter) model. It consists of a transistor and free wheeling diode.

Extends from Icons.Converter (Converter icon), PowerConverters.Interfaces.DCDC.DCtwoPin1 (Positive and negative pins of side 1), PowerConverters.Interfaces.DCDC.DCtwoPin2 (Positive and negative pins of side 2), Modelica.Electrical.Analog.Interfaces.ConditionalHeatPort (Partial model to include a conditional HeatPort in order to describe the power loss via a thermal network), Interfaces.Enable.Enable1 (Partial model providing enable parameter and optional enable input for one firing signal).

Parameters

Connectors

Modelica.Electrical.PowerConverters.DCDC.ChopperBuckBoost

Bidirectional chopper

Information

This is a bidirectional buck / boost - converter with 2 transistors and 2 freewheeling diodes.

Extends from Modelica.Electrical.PowerConverters.Interfaces.DCDC.DCtwoPin1 (Positive and negative pins of side 1), Modelica.Electrical.PowerConverters.Interfaces.DCDC.DCtwoPin2 (Positive and negative pins of side 2), Modelica.Electrical.Analog.Interfaces.ConditionalHeatPort (Partial model to include a conditional HeatPort in order to describe the power loss via a thermal network), Modelica.Electrical.PowerConverters.Interfaces.Enable.Enable2 (Partial model providing enable parameter and optional enable input for two firing signals).

Parameters

Connectors

Modelica.Electrical.PowerConverters.DCDC.HBridge

H bridge (four quadrant converter)

Information

The H bridge is a four quadrant DC/DC converter. It consists of two single-phase DC/AC converters which are controlled differently; see Fig. 1.

Fig. 1: H bridge

If the firing inputs fire_p and fire_n are inverse, the two legs are controlled symmetrically so that full positive or negative output voltage can be generated. See examples DCDC.HBridge.

Note

In the first version, the following signal connections were implementented:

• fire_p to inverter_p.fire_p and inverter_n.fire_n
• fire_n to inverter_p.fire_n and inverter_n.fire_p

Therefore the two fire signal had be supplied complentary to avoid a short circuit on the source.

In the enhanced version, the following signal connections are implementented:

• inverter_p.fire_p to fire_p
• inverter_p.fire_n to not fire_p
• inverter_n.fire_p to fire_n
• inverter_n.fire_n to not fire_n

Therefore a short circuit on the source is avoided intrinsically.

If both versions are provided with the same (complementary) fire signals, identical results are obtained. Additionally, two more switching states are possible: fire_p = fire_n = true (which means switching on both upper switches) and fire_p = fire_n = false (which means switching on both lower switches).

Extends from Icons.Converter (Converter icon), PowerConverters.Interfaces.DCDC.DCtwoPin1 (Positive and negative pins of side 1), PowerConverters.Interfaces.DCDC.DCtwoPin2 (Positive and negative pins of side 2), Modelica.Electrical.Analog.Interfaces.ConditionalHeatPort (Partial model to include a conditional HeatPort in order to describe the power loss via a thermal network), Interfaces.Enable.Enable2 (Partial model providing enable parameter and optional enable input for two firing signals).

Parameters

Connectors