Experimental results of vector controlled and vector modulated VIENNA I rectifier

This paper presents the practical realisation of a novel three-level vector modulation method applied to a vector controlled VIENNA I rectifier. The theoretical analysis of the proposed modulation technique and vector control system are verified by simulations and laboratory prototype measurements. The rectifier prototype has been designed to operate at a nominal DC link output power of 10 kW, DC link voltage of 650 V and an applied switching frequency of 5 kHz. The L filter is designed so that the total harmonic line current distortion is 4%. The digital implementation of the control system and vector modulator are realised with Motorola MPC555 microcontroller.