Optimization of the transition function of a modular uninterruptible power supply slave type

The system uninterruptible power supply with an output voltage sine wave used several parallel-connected uninterruptible power supplies. In the linearized model output inverter delay is not taken into account the phase of the output signal pulse - width modulator. To account for the delay unit uses a standard Simulink - Transport Delay. Optimization of the transition function performed by a function block Signal Constraint. As a result, the coefficients found PID - regulator system inverter control.