I was looking at hobs the other day and got talking to a nice salesman who knew I wasn't spending my money that day (appliances are for new house when we move in a few weeks).
I told him I wanted gas (I'm used to it) and for ease of daily cleaning wanted one with a drop down lid when not in use. Of course, they don't make them on hobs any more (just full size stand alone cookers).
He showed me a few gas hobs and then asked if I had thought of an induction hob as they are as controllable as gas and are flat for ease of cleaning. He also gave me demonstration.
We discussed the pans required for induction hobs and the one he was selling included a set of pans. He said people were put off buying induction hobs because of the need for pans with magnetic bases which most ordinary pans do not have, therefore this manufacturer were giving a set of pans with their hob.
Now I've told you all that (possibly useless

) information, I think it means that there probably isn't anything that you can buy to allow you to use your present pressure cooker on an induction hob. Maybe a case of buy a new pressure cooker or don't buy an induction hob.
As far as a site that tests different hobs is concerned, if you google the make of hob + reviews then you should find something.