Three-phase High Power Factor Rectifier Applying Harmonic Current Injection

With the widely usage of power electronic equipment, harmonic pollution of three phase rectifier has been paid more and more attention. Harmonic current injection technique is an effective method to suppress harmonics. A novel three-phase high power factor diode rectifier based on current injection is presented in this paper. The rectifier is simple in configuration and with less loss, which uses two diodes to limit third harmonic current and uses capacitors to allocate harmonic current for injection. The converter’s operational principle, characteristics and design method are illustrated. Simulation and experimental results show the effectiveness of harmonic suppression and power factor improvement of the proposed scheme.