Flexible Double Conversion Uninterruptible Power Supply

By increasing the load of the double conversion uninterruptible power supply, their nominal power should increase, this could happen through paralleling of other UPS or changing the current one, which both of these have a cost effect. In this paper a new method for increasing the nominal power of the double conversion UPS is proposed, which could increase the UPS power up to 200%. This method is based on reconfiguration of the mentioned UPS. This proposed configuration not only could compensate the load and network perturbation during normal operation, but also in the absence of the network the two inverter could handle the load with each other. The proposed method is validate through simulation results.