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Primary Winding

(To be removed) Linear nonideal transformer winding

The Primary Winding block will be removed in a future release. Use the Winding, Eddy Current, and Fundamental Reluctance blocks instead. To learn how to create a custom transformer without this block, refer to Push-Pull Buck Converter in Continuous Conduction Mode.

Library

Simscape / Electrical / Power Systems / Passive Devices / Transformers / Fundamental Components

  • Primary Winding block

Description

The Primary Winding block models linear nonideal winding of a transformer with linear winding leakage and linear core magnetization effects. Although magnetization effects occur in the magnetic core, it is common practice to place mathematically equivalent electrical components on the electrical winding and parameterize them using electrical parameters. The figure shows the equivalent circuit diagram for the primary winding.

  • Rl is the leakage resistance.

  • Ll is the leakage inductance.

  • Rm is the magnetization resistance.

  • Lm is the magnetization inductance.

Variables

To set the priority and initial target values for the block variables before simulation, use the Initial Targets section in the block dialog box or Property Inspector. For more information, see Set Priority and Initial Target for Block Variables.

Nominal values provide a way to specify the expected magnitude of a variable in a model. Using system scaling based on nominal values increases the simulation robustness. You can specify nominal values using different sources, including the Nominal Values section in the block dialog box or Property Inspector. For more information, see System Scaling by Nominal Values.

Ports

+

Positive electrical conserving port

-

Negative electrical conserving port

N

North magnetic conserving port

S

South magnetic conserving port

Parameters

Main

Number of winding turns

Number of wire turns on the transformer winding. The default value is 10.

Leakage resistance

Power loss in the winding. The default value is 1e-3 Ohm.

Leakage inductance

Magnetic flux loss in the winding. The default value is 1e-3 H.

Core-loss resistance

Magnetic losses in the transformer core. The default value is 1e6 Ohm.

Magnetization inductance

Magnetic effects in the transformer core when operating in its linear region. The default value is 1e6 H.

Version History

Introduced in R2013b