Analysis and Implementation of a Master-Slave Control based on a Passivity Approach for Parallel Inverters Operation

This paper presents the design and implementation of an instantaneous current sharing control for a master-slave strategy in parallel inverter operation. The control systems of the master and the slave inverters are based on a passivity approach and they have a good performance achieving that the current is divided between the two inverters, even in the presence of non-linear loads. Besides, the system presents a fast transient response and guarantee in its output a continue-sinusoidal waveform. The performance of the passivity based control for parallel operation is presented by means of simulation and experimental results, in order to verify the viability of the propose approach and the easy implementation