Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"AC/DC conversion"”.
-
An integrated generator-rectifier system for high-power AC-DC conversion
High power ac-dc conversion plays an increasingly important role in energy conversion systems, such as wind turbines or electric ship grids. Conventional conversion architectures rely heavily on active rectifiers, which consist of fully-controlled power-electronics switches. These make the system …
-
Power electronic transformers for AC-AC and AC-DC conversion with reduced number of switches
… Transformer is proposed for three-phase power conversion (three-phase AC to AC as well as three-phase AC to DC). The goal of this project is to reduce the weight and size of the power converter by replacing the low-frequency transformers with high-frequency transformers (HFTs). The novelty of …
-
Investigation of High-density Integrated Solution for AC/DC Conversion of a Distributed Power System
… and high reliability. Due to limited space and increasing power consumption, power supplies for telecom and server systems are required to deliver more power with smaller volume. As the key component of DPS system, front-end AC/DC converter is under the pressure of continuously …
-
Hybrid Modular Multilevel Converter Family and Modular DC Circuit Breaker for Medium-voltage DC (MVDC) Applications
… flexibility of power electronics-based voltage conversion techniques, DC grids, and distribution systems have gained significant interest. These systems offer advantages such as improved power quality, efficiency, and flexibility. Medium-voltage DC (MVDC) applications, including shipboard, …
-
High frequency power conversion architecture for grid interface
With the present ac-voltage distribution system, ac-dc converters are key components for driving many dc voltage applications from the ac grid voltage. There are a lot of electronic devices that natively operate from the dc voltage including light emitting diodes (LEDs), personal and laptop …
-
Improving data center power delivery efficiency and power density with differential power processing and multilevel power converters
… architectures consist of many cascaded power conversion stages. The system-level power delivery efficiency decreases each time the requisite power is processed through the individual stages, and the total power converter footprint increases by each cascaded conversion stage. Innovative …
-
High-efficiency ultrasound-powered micro-LEDs for optogenetic applications
… to harvest the US energy, a rectifier chip for AC-DC conversion, and a µLED to deliver the optical power. The µLED should be capable of delivering a minimum of 5 mW/mm2 optical power at ~ 1 mA for activating light-sensitive proteins (Channelrhodopsin-2) while the temperature rise is < 1 oC, have …
-
Development of a Power Hardware-in-the-Loop Test Bench for Electric Machine and Drive Emulation
… loop (PHIL) platform to emulate electric machines for the purpose of a motor drive testbench with a particular focus on induction machine emulation. PHIL presents advantages over full-hardware testing of motor drives as the PHIL platform can save space and cost that comes from the physical …