Led by NTNU, PTO control strategies that can optimize the EMG overall power performance will be developed. These will use the system design parameters (defined in WP2) and physical constraints of the EMG prototype such as maximum torque, speed and stroke (derived from WP2 and WP3) as input. The performance of several control alternatives (e.g. passive, reactive, adaptive, and predictive) will be evaluated taking into consideration the efficiency of the EMG at partial load. A number of representative test cases will be analysed, representing both steady state and typical operational transients, and the most promising control strategies will be identified. Moreover, all the simulation models will be implemented to ease the subsequent implementation in the HWIL testing platform in WP6.