Simulation Research of UPS of Single-phase Delta Conversion

The operation principle and control method of single-phase delta conversion UPS are presented.The parallel main converter is controlled as a fundamental sine voltage source and the series converter is controlled as a fundamental sine current source with this control strategy,in the case of non-sinusoidal,abnormal supply voltage,capacitive load and inductive load.The SIMULINK simulation results of system performance under continuous domain verify that the strategy is feasible.