Series-Parallel Compensated UPS with Double Converters
Abstract:
The paper analysed in detail the operation principle, mathematical modes and distinct control manner using Synchronous Reference Frame (SRF) of a three-phase series-parallel compensated line-interactive UPS system. The proposed control tactics can make this kind of UPS carry out all of the control goals: sinusoidal input current with and sinusoidal output voltage with normal value in the case of non-sinusoidal, non-normal supply voltage and non-linear load with reactive power.