Space vector modulation scheme for dual-bridge matrix converters using safe-commutation strategy

The proposed space-vector modulation scheme for dual-bridge matrix converters uses the principle of the indirect modulation strategy to calculate the duty cycles of the active vectors. On the other hand, zero-vectors duration and distribution within a switching cycle are elaborated such that the line side switches commutate at zero-current leading to safe commutation of the converter. The switching frequency (f _s) can be expressed in terms of the line frequency (f_l ) as: f_s= 6*N_s*f_l. For integer values of N_s, synchronization in time between the starting of each switching period and the position of the input current reference in the complex plane is performed. Compared to a previous modulation scheme, this strategy leads to reducing the harmonic distortion factor of the input current in particular case when N_s is odd. The effectiveness of the considered modulation scheme is emphasized using Matlab and Simulink software