Title :
Third-harmonic modulated power electronics interface with three-phase utility to provide a regulated DC output and to minimize line-current harmonics
Author :
Naik, Rajendra ; Rastogi, Mukul ; Mohan, Ned
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
A novel approach to achieve nearly sinusoidal line current rectification of three-phase utility voltages is presented. The scheme incorporates two step-up DC-DC power converters to modulate the DC-link currents at the third-harmonic frequency. The modulated currents are then circulated through the AC-side of the diode-bridge rectifier, using a zigzag autotransformer, Simulation results for a three-phase, 208 V (line-to-line), 1 kW system are presented. Results from experimental investigations on a laboratory model are included, supporting the concept
Keywords :
AC-DC power convertors; DC-DC power convertors; autotransformers; bridge circuits; circuit optimisation; circuit testing; network analysis; power system harmonics; rectifying circuits; 1 kW; 208 V; DC-link current modulation; diode-bridge rectifier; sinusoidal line current rectification; step-up DC-DC power converters; third-harmonic frequency; three-phase; zigzag autotransformer; Circuits; DC-DC power converters; Diodes; Frequency conversion; Impedance; Industry Applications Society; Leg; Reactive power; Rectifiers; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
