Optimal control of single-phase voltage source active rectifier with emphasis on the minimal electromagnetic interference

This contribution presents comparison of two competitive control strategies for the single-phase voltage source active rectifier with emphasis on the minimal EMI. The first control is based on the PR controller with active damping of low-frequency disturbances at the converter ac side and the second control employs so-called hybrid delta modulation which naturally secures the sinusoidal waveform of the ac current. Results presented in this paper are confirmed by experiments made on developed laboratory prototype of the single-phase VSAR.