center tapping of transformer

suppose i need a transformer with 2 primary windings and 1 secondary winding. which transformer block should i use ? can anyone answer me on this

Answer 1

[NVSL]

Hi @Jyotiprakash

I understand you are trying to include a transformer block of 2 primary windings and 1 secondary winding.

You can use the “Multi-Winding Transformer” block where you can set custom primary and secondary windings. You can search it in the following library location in the Library Browser of Simulink.

Simscape / Electrical / Specialized Power Systems / Power Grid Elements

Or you can browse for “Multi-Winding Transformer” in the Library Browser or by double-clicking on the Simulink window.

Refer to the below documentation link for more details:

https://www.mathworks.com/help/sps/powersys/ref/multiwindingtransformer.html

Hope this helps!

Answer 2

[Epsilon]

Hi Jyotiprakash,

A center-tapped transformer block with two primary windings and a secondary winding can be found in both 'Specialized Power Systems' and 'Simscape Electrical', but it should be chosen based on the application. Some 'Specialized Power System' blocks contain only terminal ports, which are special electrical connection lines and are not compatible with other Simulink signals or Simscape physical signals. 'Simscape Electrical' blocks contain physical ports that can be connected to other Simscape blocks or to Simulink signals using PS-Simulink converter blocks.

Transformer blocks in 'Specialized Power System' with three winding options are:

• Linear Transformer: https://www.mathworks.com/help/sps/powersys/ref/lineartransformer.html
• Saturation Transformer: https://www.mathworks.com/help/sps/powersys/ref/saturabletransformer.html
• Multi-Winding Transformer: https://www.mathworks.com/help/sps/powersys/ref/multiwindingtransformer.html
• Three-Phase Tap-Changing Transformer(Three-Windings): https://www.mathworks.com/help/sps/powersys/ref/threephasetapchangingtransformerthreewindings.html

Transformer blocks in 'Simscape Electrical' with three winding options are:

• Center-Tapped Transformer: https://www.mathworks.com/help/sps/ref/centertappedtransformer.html
• Three-Winding Non-Linear Transformer: https://www.mathworks.com/help/sps/ref/threewindingnonlineartransformer.html
• Three-Winding Transformer(Three-Phase): https://www.mathworks.com/help/sps/ref/threewindingtransformerthreephase.html

Select one of the above based on the application. For normal electrical applications, a 'Center-Tapped Transformer' block can ideally be used to represent a center-tapped transformer with two primary windings and a secondary winding. Please find an attached 'CenterTappedExample.slx' file for an example implementation.