Current fed multipulse rectifier approach for unidirectional HVDC and MVDC applications

Lambert, Gustavo; Vieira Soares, Marcus; Wheeler, Patrick; Lobo Heldwein, Marcelo; Romulo de Novaes, Yales

Abstract

Even though multipulse rectifiers are a long established and well-known technology, still their behavior is not fully described in the literature when they are fed by three-phase balanced sinusoidal currents sources. To address the aforementioned gap, this work presents the operation and properties of current-fed multipulse rectifiers. The undertaken aim is achieved by analyzing the examined topology through circuit analysis and then, the theoretical results are validated through comparisons with the simulated waveforms and experimental results. Furthermore, the expected harmonic content and the duality with traditional voltage-fed multipulse rectifiers are presented. In the proposed structure, the transformer voltages present a multipulse waveform, instead of its primary currents as in voltage-fed multipulse rectifiers. This implies on limiting the voltage steps and its derivative which might be beneficial to reduce cost and volume of insulation, particularly for MVDC and HVDC applications. Besides that, by actively controlling the primary currents, a possible copper loss reduction is shown in the transformer windings, differentiating the proposed structure from its voltage controlled counterpart.

Citation

Lambert, G., Vieira Soares, M., Wheeler, P., Lobo Heldwein, M., & Romulo de Novaes, Y. (in press). Current fed multipulse rectifier approach for unidirectional HVDC and MVDC applications. IEEE Transactions on Power Electronics, https://doi.org/10.1109/TPEL.2018.2849927

• Journal Article Type: Article
• Acceptance Date: Jun 17, 2018
• Online Publication Date: Jun 25, 2018
• Deposit Date: Jul 13, 2018
• Publicly Available Date: Jul 13, 2018
• Journal: IEEE Transactions on Power Electronics
• Print ISSN: 0885-8993
• Electronic ISSN: 1941-0107
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1109/TPEL.2018.2849927
• Keywords: Multipulse Rectifier, DC-DC, Medium Frequency, Current Source
• Public URL: https://nottingham-repository.worktribe.com/output/941674
• Publisher URL: https://ieeexplore.ieee.org/document/8395005/
• Additional Information: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
• Contract Date: Jul 13, 2018