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Showing 1 to 6 of 6 for “"active rectifier"”.
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Design of Extreme Efficiency Active Rectifier for More-electric Aircrafts
… carrying out the task is commonly known as "rectifiers". This work aims at designing and constructing rectifiers that can work efficiently and reliably in more-electric aircrafts. One of the major challenge for these rectifiers comes from the complex aircraft environment. The ambient …
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An integrated generator-rectifier system for high-power AC-DC conversion
… conversion architectures rely heavily on active rectifiers, which consist of fully-controlled power-electronics switches. These make the system bulky, lossy, and less reliable. This dissertation presents an alternative approach: integrating a multi-port permanent magnet synchronous …
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Control Strategies for Minimizing the DC-Link Capacitance in Power Electronics Converters for Aircraft Electrical Power Systems
… First, a BSG based 270V DC system using a diode rectifier is investigated in which the DC-link voltage regulation is obtained through the excitation control of the exciter SG using a two-quadrant DC chopper. A steady-state feedforward duty ratio and output power-based feedforward exciter field …
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Addressing control and capacitor voltage regulation challenges in multilevel power electronic converters
… redundant state selection for a flying capacitor active rectifier. This method reduces the number of switching instances by using both online and offline state selection procedure. Additionally, a start-up procedure is proposed that pre-charges the all of capacitors in the rectifier to both avoid …
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New techniques to improve power quality and evaluate stability in modern all-electric naval ship power systems
… It includes three papers that deal with active power filter topology, active rectifier control, and impedance measurement techniques, respectively. To mitigate harmonic currents generated by high-power high-voltage shipboard loads such as propulsion motor drives, the first paper proposes …
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Terminal Behavioral Modeling of Electric Machines for Real-time Emulation and System-level Analysis
Stability and sustainability of operation of interconnected power converter systems has been an important focus of study in the field of power electronics and power systems. With ever-increasing application of electrical machines by means of electrification of vehicles, airplanes and shipboards, …