Nonlinear models implemented as a current source cannot be connected in series with an inductor, another current source, or an open circuit. Such circuit topologies cause errors in Simscape Electrical Specialized Power Systems.
Similarly, if your nonlinear model uses a Controlled Voltage Source block, this model could not be short-circuited or connected across a capacitor.
To be able to simulate this circuit, you must provide a current path around one of the two nonlinear blocks. You could, for example, connect a large resistance, say 1 MΩ.
