Low-harmonic three-phase rectifier applying current injection

A low-harmonic three-phase rectifier that applies near optimal current injection is proposed. The rectifier utilises a novel passive current injection network, suitable for application at high power levels. The current injection method is analysed and it is shown that ideal sinusoidal waveforms of the input currents can be obtained. Requirements imposed to the current injection network are derived. Structure and design of the current injection network are discussed. Analytical results are experimentally verified.