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.
| Original language | English |
|---|---|
| Title of host publication | 2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG 2018) |
| Publisher | IEEE |
| Pages | 1-6 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - 7 Jun 2018 |
Keywords
- autotransformers
- bridge circuits
- DC-DC power convertors
- HVDC power convertors
- HVDC power transmission
- power transmission faults
- trapezoidal modulation
- transition-arm bridges
- power electronics installation
- energy storage capacity
- DC fault blocking capability
- DC autotransformer design
- high voltage DC transmission systems
- AC autotransformer
- low-loss devices
- high voltage DC-DC conversion
- DC-DC converter topology
- Bridge circuits
- DC-DC power converters
- High-voltage techniques
- Energy storage
- Power transformers
- windings
- topology
- Modular multilevel converter
- DC transformer
- dual active bridge
- DC-DC power conversion