Fei Fred Wang

TL;DR: In this paper, a synchronous generator emulator was developed by using a three-phase voltage source converter for transmission level power system testing, and the voltage type ideal transformer model was selected considering accuracy and stability.

TL;DR: In this paper, a hardware testbed platform emulating multiple-area power system scenario dynamics has been established aiming at multiple time-scale real-time emulations, where a constant-impedance, constant-current, and constant-power (ZIP) model has been used for static load types, while a three-phase induction motor model was built to represent dynamic load types.

TL;DR: In this paper, a three-level dc-dc converter with dual outputs based on enhancement-mode GaN devices is proposed for use as a battery charger in aircraft applications, which can output either 28 or 270 V, selected with a jumper.

TL;DR: The test results demonstrate that the PSR GDPS is more preferable because of lower interwinding capacitance, lower load voltage regulation rate, higher conversion efficiency, and simpler control circuit.

TL;DR: In this paper, the authors theoretically investigated how voltage balancing control influences the switching frequency in a modular multilevel converter (MMC) and derived the relationship between the submodule capacitor unbalanced voltage and converter switching frequency.