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This article presents a switch-mode rectifier-based electric power architecture with an integrated ground power unit for more electric aircraft. The well-regulated high-voltage dc-bus is established from the aircraft generator. And the conventional major 270-Vdc, 28-Vdc, and 115-Vac/400-Hz buses are also preserved. In landed conditions, the ground power unit function powered by the mains is inherently possessed thanks to the proposed integrated schematic. First, the developed switch-mode rectifier using a silicon-carbide device with a wide frequency range covering utility line frequency and aircraft generated varied high frequency is presented. The allowable energy storage inductances using the embedded generator armature winding are derived. Good generator armature power quality and well-regulated dc output voltage are preserved by the designed current and voltage control schemes. Next, the utility grid-powered ground power unit established by the embedded schematic is introduced. Finally, the inverter for generating the 115-Vac/400-Hz three-phase source and the dc–dc converter for establishing the 270-Vdc bus are constructed. Normal operations, good dynamic, and steady-state performances of all the constructed power stages are verified experimentally, which can confirm the feasibility of the proposed aircraft power architecture. [ABSTRACT FROM AUTHOR]

This article presents a wind switched-reluctance generator (SRG) based microgrid (MG) with plug-in energy support mechanism. First, the wind SRG is properly designed and controlled. By applying the dynamic commutation shift and robust voltage control, it has the generated voltage with fast tracking and regulation responses under varying driven speed and load. Then, the MG common dc-bus voltage is established via a reconfigurable interleaved boost converter. The working cell number can be automatically changed to possess high efficiencies over wide power range. To enhance the voltage regulating characteristics, the feedback controller is augmented with an adaptive command feedforward controller and a robust tracking error cancellation controller. A bidirectional Capacitor-inductor-inductor-capacitor (CLLC) resonant converter and a bidirectional single-phase three-wire (1P3W) load inverter are constructed for powering loads and conducting grid-connected operation. As the wind energy input is deficient and even the wind turbine is halted, the inherent SRG followed boost converter can be reconfigured to form an interleaved boost switch-mode rectifier. The possible harvested single-phase ac and dc sources can be plugged into the MG for achieving energy support. The operation characteristics of the MG and the smooth transfer between all constituted power stages are demonstrated experimentally. [ABSTRACT FROM AUTHOR]

This paper presents the development and control of an electric vehicle (EV) synchronous reluctance motor (SynRM) drive. A bilateral DC/DC converter is used as an interface between the battery and the motor drive. The boostable and well-regulated DC-link voltage with robust regulation control can enhance the motor driving performance in wide speed range. And the regenerative braking energy can be successfully recovered to the battery. In SynRM drive, the robust current PWM switching control considering inherent slotting effects and robust speed model reference control are made. Moreover, an adaptive commutation scheme (ACS) is developed to automatically set the commutation instant for achieving the motor total loss minimization. The dynamic and static driving characteristics of the established EV SynRM drive in various conditions are verified experimentally. [ABSTRACT FROM AUTHOR]

This paper presents an electric scooter with grid-to-vehicle/vehicle-to-home (V2H)/vehicle-to-grid (V2G) and energy harvesting functions. First, the bilateral dc/dc converter-fed scooter dc motor drive is established. Good driving characteristics are achieved via proper control. In an idle case, the motor drive can be arranged to perform the V2H and V2G discharging operations. A front-end dc/dc converter is developed using the motor-drive-embedded components to establish the boosted and well-regulated dc-link voltage from battery. Then, an H-bridge single-phase inverter is established to yield the ac 110-V/60-Hz source for home appliances or emergency power use. Good output sine-wave voltage waveforms are yielded by the designed robust and proportional-plus-resonant controllers. Moreover, the V2G operation is also applicable. The battery can send power to the utility grid. In addition, a synchronous rectifier-based buck dc/dc converter is designed to establish a universal serial bus with 5-V dc for charging various peripheral devices. Conversely in charging mode, an H-bridge boost switch-mode-rectifier-based charger is formed using the same schematics. Good charging characteristics and line drawn power quality are obtained. As to the photovoltaic (PV) energy harvesting scheme, the energies of roof PV or possible dc sources can be harvested to make the battery auxiliary charging. [ABSTRACT FROM AUTHOR]