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.
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Showing 1 to 20 of 83 for “"full bridge"”.
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A stacked full-bridge microinverter topology for photovoltaic applications
… utility line. This thesis presents a new stacked full-bridge topology that improves upon the previous high-frequency inverter section. By utilizing new operating modes to reduce the reliance on frequency control and allowing for the use of lower blocking voltage transistors, the operating …
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Full Bridge LLC Converter Secondary Architecture Study for Photovoltaic Application
… Base on conventional secondary resonant full bridge LLC converter, the two sub-topologies of different secondary rectification network: active, full bridge secondary and active voltage doubler output end LLC converter are presented in detail. The main operating principle is also described …
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A single stage full bridge power factor corrected AC/DC converter
… can be designed to offer soft switching of the full bridge switches. The operating principles of the proposed converter are discussed and its performance characteristics under steady state conditions are examined. A design procedure is illustrated to select the components of the converter for a …
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A Three-Phase Single-Stage AC-DC ZVZCS PWM Full-Bridge Converter
… range. A new three-phase, single-stage ac-dc full-bridge converter is proposed in this thesis. The outstanding features of the new converter are that it is relatively simple and it can perform PFC using standard phase-shift pulse width modulation (PWM). In the thesis, derivation of the …
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A Three-Phase Single-Stage AC-DC ZVZCS PWM Full-Bridge Converter
… range. A new three-phase, single-stage ac-dc full-bridge converter is proposed in this thesis. The outstanding features of the new converter are that it is relatively simple and it can perform PFC using standard phase-shift pulse width modulation (PWM). In the thesis, derivation of the …
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A line and load independent zero voltage switching DC/DC full bridge converter topology
Full bridge dc/de converter topology is extensively applied in medium to high power conversion. In a power level up to 3 kW, the full bridge converter now employs MOSFET switches. High efficiency, high power density, high reliability and low EMI are some of the most desirable features in these …
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Adaptive Control of a Step-Up Full-Bridge DC-DC Converter for Variable Low Input Voltage Applications
… converter. The converter is a phase-shifted full-bridge PWM converter that is designed to operate as a front stage of a power conversion system where the input is a variable low voltage high current source. The converter is designed to step-up the low voltage input to an acceptable level that …
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A Dq Rotating Frame Controller for Single Phase Full-Bridge Inverters Used in Small Distributed Generation Systems
… of a DQ controller for a 2.5kW single phase full-bridge inverter is presented in this study with the final results implemented in a FPGA/DSP based digital controller board.
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Design considerations of a thirty-kilowatt, thirty-kilohertz, full-bridge inverter for application in a very-low-frequency communications system
A thirty-kilohertz thirty-kilowatt full-bridge inverter design is presented. The inverter module forms an integral part of a very-low-frequency transmitter for a submarine communications application. Device selection and drive selection as well as testing data for inverter clamped mode of operation …
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Four-Output Isolated Power Supply for the Application of IGBT Gate Drive
… the design issues of the multiple-output boost full-bridge converter, which is constructed by cascading the boost regulator with the inductor-less full-bridge converter. The design of the boost regulator has been proposed briefly with component selection and compensator design. After that, the …
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Design and Implementation of a Radiation Hardened GaN Based Isolated DC-DC Converter for Space Applications
… a practical implementation of the Phase Shifted Full Bridge DC-DC Isolated converter with synchronous rectification for space applications. Recently released radiation hardened GaN FETs were used in the Full Bridge and synchronous rectifier power stages. A survey outlining the benefits of new …
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A doubly-fed machine for propulsion applications
… with the electric machine is performed. A half bridge, full bridge, asymmetrical PWM half bridge, and asymmetrical PWM full bridge converter are all examined in terms of feasibility and power handling capability in simulation. A comparison of the modeled power transfer capability and the actual …
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High Efficiency DC-DC Converter for EV Battery Charger Using Hybrid Resonant and PWM Technique
… is high voltage high power, the phase-shifted full bridge and LLC converters, which are popularly used in high power applications, are discussed in detail in Chapter 2. They are generally considered as high efficiency, high power density and high reliability, but their prominent features are …
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A Soft-Switched Grid-Connected DC/AC Inverter with Low Current Ripple
… industrial DC/AC inverters are based on simple full-bridge circuits with hard switching. However, hard-switching imposes several difficulties on the performance of DC/AC inverters. Thus, increasing the efficiency and decreasing the switching losses of these inverters have been an active research …
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Modeling, Control and Design Considerations for Modular Multilevel Converters
… Both modular multilevel converters with half-bridge and full-bridge sub-modules are evaluated in order to provide a complete analysis of the converter. From among the family of modular based hybrid multilevel converters, the newly released Alternate Arm Converter (AAC) is considered for …
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A frequency converter to power a soudronic VAA20 welding machine
… to generate an unregulated DC bus of 250V. A full bridge transistorised inverter was controlled by a 6809 microprocessor that generated pulse width modulated waveforms to derive a desired inverter output current and frequency. A base drive was developed to control the power transistor in the …
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Modeling and Control Strategy for Capacitor Minimization of Modular Multilevel Converters
… Ideally, the proposed method works with the full bridge topology. However, the concept also works with half bridge topology with a significant reduction of line frequency related ripple. To gain a better understanding of the nature of circulating energy and the means of reducing it, the …
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Advanced active rectifiers for electric vehicle battery charging
… presented in this dissertation is in the area of fully electric or plug-in hybrid electric vehicles. Both of these vehicle types require an external power source to fully charge their large amount of energy storage. For most consumers this means plugging their vehicle into the utility which …
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DC Fault Current Analysis and Control for Modular Multilevel Converters
… systems and the traditional MMCs with the Half-Bridge submodule configuration, especially when a DC short circuit fault happens. In this study, the fault current behavior is analyzed. An alternative submodule topology and a fault operation control are explored to achieve the fault current …
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Cascade Dual-Buck Inverters for Renewable Energy and Distributed Generation
… (AHCU) PWM technique is proposed for dual-buck full-bridge inverter. The proposed approach is to cut down the switching loss of power MOSFETs by half. At the same time, this AHCU PWM leads to current ripple reduction, and thus reducing ripple-related loss in filter components. Therefore, the …
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