Abstract
This paper studies a dc-dc converter topology dual to the ac autotransformer for medium and high voltage dc-dc conversion. Operation with trapezoidal modulation is analyzed where the dc autotransformer is built of transition-arm bridges. This structure features less power electronics installation and energy storage capacity as compared to counterparts operating in sinusoidal modulation. It also permits the use of low-loss devices such as thyristors or Insulated Gate Commutated Thyristors (IGCTs), promising high efficiency. The paper investigates this topology in steady state as well as DC fault blocking capability.
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CITATION STYLE
Gowaid, I. A., Adam, G. P., Williams, B. W., Massoud, A. M., & Ahmed, S. (2018). A DC autotransformer design for medium and high voltage DC transmission systems. In Proceedings - 2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2018 (pp. 1–6). Institute of Electrical and Electronics Engineers Inc. https://doi.org/10.1109/CPE.2018.8372549
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