Based on that, I will assume your problem is non-convex, unless you prove otherwise. It looks like a big complicated mess, for which I have no idea what you are trying to do, other than the clue in your comment “Newton Raphson”:, which sounds like a rather suspicious thing to be inside a CVX program (calculations).
If you really have a non-convex problem (and I don’t know for sure), you should use a different tool, such as maybe YALMIP, which can handle non-convex nonlinearities if a suitable solver is called. Of course, YALMIP developer and forum answerer, Johan, might tell you that your model (if translated into YALMIP code) makes no sense.