Chopper Step Down - MapleSim Help

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Home : Support : Online Help : MapleSim : MapleSim Component Library : Electrical : Power Converters : DCDC : Chopper Step Down

Chopper Step Down

Step-down chopper

Modelica Standard Library

	Description
	The Chopper Step Down component is a conventional step-down chopper model. It consists of a pass-transistor and free-wheeling diode. The gate of the pass-transistor is controlled by the boolean input ${fire}_{p}$ and enabled with either a parameter or an enable input. To see an example model that uses this component, search for ChopperStepDown in the MapleSim search bar on the main toolbar.

Connections

Name	Description	Modelica ID
${dc}_{p1}$	Electrical port; positive DC input	dc_p1
${dc}_{n1}$	Electrical port; negative DC input	dc_n1
${dc}_{p2}$	Electrical port; positive DC output	dc_p2
${dc}_{n2}$	Electrical port; negative DC output	dc_n2
$heatPort$	Optional heat port	heatPort
$enable$	Boolean input; enables ${fire}_{p}$	enable
${fire}_{p}$	Boolean input; firing signal of transistor	fire_p

Parameters

General Parameters

Name	Default	Units	Description	Modelica ID
$R_{on (tran)}$	$1 \cdot 10^{−5}$	$Ω$	Transistor closed resistance	RonTransistor
$G_{off (tran)}$	$1 \cdot 10^{−5}$	$S$	Transistor opened conductance	GoffTransistor
$V_{knee (tran)}$	$0$	$V$	Transistor threshold voltage	VkneeTransistor
$R_{on (diode)}$	$1 \cdot 10^{−5}$	$Ω$	Closed diode resistance	RonDiode
$G_{off (diode)}$	$1 \cdot 10^{−5}$	$S$	Opened diode conductance	GoffDiode
$V_{knee (diode)}$	$0$	$V$	Diode forward threshold voltage	VkneeDiode
Use Heat Port	$false$		True (checked) means heat port is enabled	useHeatPort

Enable Parameters

Name	Default	Units	Description	Modelica ID
Use Constant Enable	$true$		True (checked) means disable Enable port.	useConstantEnable
Constant Enable	$true$		True (checked) means firing signals are always enabled.	constantEnable

	Modelica Standard Library
	The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

Electrical Library

Power Converters

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