Journal
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
Volume 57, Issue 1, Pages 549-558Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2020.3028341
Keywords
Rectifiers; Windings; Bridge circuits; Intellectual property; Distributed Bragg reflectors; Power quality; Harmonic analysis; Multipulse converter (MPC); power quality; tapped interphase bridge rectifier; zigzag configured autotransformer; 12-pulse diode bridge rectifier (DBR)
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This article presents a circuit configuration to reduce harmonic contents and improve power quality by using a tapped interphase bridge rectifier at the dc side of a 12-pulse DBR. The configuration eliminates the need for a zero-sequence blocking transformer and shapes the supply current near to a sine wave.
This article presents a circuit configuration to reduce the harmonic contents at the ac mains of a 12-pulse zigzag configured autotransformer-based diode bridge rectifier (DBR). The proposed circuit configuration employs a tapped interphase bridge rectifier at the dc side of 12-pulse DBR that results in higher pulses in the supply current, thus reducing the harmonic content and, thereby, improving the power quality of the system. Since the autotransformer employed is zigzag configured, the need for zero-sequence blocking transformer is eliminated. Moreover, the proposed circuit configuration at the dc side shapes the supply current near to a sine wave. Further, the proposed configuration is analyzed, simulated in MATLAB/Simulink, and the simulation results are presented, which confirms the improvement in power quality parameters in the input ac line current. Furthermore, the viability of the proposed configuration is verified by the experimental results that confirm the suitability of the proposed configuration in ac-dc applications.
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