Justifying choices of components

[nothing909]

Homework Statement

I'm currently doing a project involving the build of a switching circuit for an SRM.

I have to choose a variety of components for each stage of the build. For example, I chose an open collector for the interface device, an optocoupler for the isolation device and an IGBT for the switching device.

I have to compare different components and then justify why I picked the one over the other.

The Attempt at a Solution

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Each component I picked would be suitable for the application so how do I justify choosing one over the other? Is there anything I should look for in data sheets that give some components an advantage over the other?

 

[CWatters]

SRM = Switched Reluctance Motor?

Each component I picked would be suitable for the application so how do I justify choosing one over the other?

I would argue it's not possible to select suitable devices without justifying one over another.

All they are asking is why that component is suitable for the application. Why choose a 10A fuse instead of a 100A fuse? There are lots of IGBT, which one and why? What current does the IGBT have to handle? Voltage? Power dissipation? Gain? Package? Price? Multiple sources?