Compressed Air Energy Storage

This is a model of a Renewable Compressed Air Energy Storage System (CAES)

The model uses PV cells, to run a DC motor which drives an air compressor. The compressed air then turns a air motor to run a AC generator.

The system is not operating correctly due to an error with the pneumatic motor. I am not sure how to fix this to get the model to work.

Any advice or improvements are appreciated.

Thanks