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 11 of 11 for “"zero-voltage-transition"”.
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Analysis of Inductor-Coupled Zero-Voltage-Transition Converters
… = simplifying the auxiliary circuits of Zero-Voltage-Transition (ZVT) inverters. Simplifying the auxiliary circuits results in both a smaller number of and lower cost for auxiliary components, without any negative impact on performance. This dissertation proposes two major concepts for …
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Modeling and control of zero-voltage transition three-phase PWM boost rectifier
Average and small signal modeling of zero-voltage transition three-phase boost rectifier is performed. The effect of ZVT is introduced in the existing model for the three-phase boost rectifier using the time-averaging equivalent circuit approach. The small signal model is derived from the average …
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Modified Space Vector Modulation for a Zero-Voltage Transition Three-Phase to DC Bi-directional Converter
… modified space vector modulation algorithm for a zero-voltage transition three-phase voltage source inverter/boost rectifier is presented. The converter is intended for high performance medium power applications requiring bi-directional power flow. The proposed modified space vector modulation …
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Solar-based Single-stage High-efficiency Grid-connected Inverter
… applies the phase-shift technique to achieve zero-voltage transition. In Chapter 2, average-mode and switch-mode Pspice simulations are applied. All the features of the inverter system are verified, such as stability, zero voltage transition and feed-forward compensation, etc. All these …
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Novel zero-voltage switching techniques for pulse-width-modulated converters
… pulse-width-modulated (PWM) converters, named zero-voltage-switched (ZVS) PWM converters and zero-voltage-transition (ZVT) PWM converters, are proposed. The proposed ZVS-PWM converters combine the merits of conventional PWM and ZVS-QRC techniques. They are capable of regulating the output for a …
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A zero voltage switching boost converter using a soft switching auxiliary circuit with reduced conduction losses
… been suggested to overcome these problems. The Zero Voltage Transition Boost converter is one such solution. In such a converter an auxiliary resonant circuit is employed which is activated only when the boost switch is turning on or off. This auxiliary circuit allows the boost switch to turn on …
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Analysis and Evaluation of Soft-switching Inverter Techniques in Electric Vehicle Applications
… types of soft-switching inverters realizing the zero-voltage-transition (ZVT) or zero-current-transition (ZCT) operation are identified to achieve high efficiency operation. Then one hard-switching inverter and the chosen soft-switching inverters are designed and implemented with the 55 kW power …
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Soft-switching techniques for high-power PWM converters
… functions with minimum increase of device voltage/current stresses and converter circulating energy, and thus have advantages over conventional techniques in efficiency, power density, reliability, and cost of power converters. The improved zero-current transition (ZCT) converters achieve …
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Optimal vertical plane booster guidance including pitch dynamics
… functions with minimum increase of device voltage/current stresses and converter circulating energy, and thus have advantages over conventional techniques in efficiency, power density, reliability, and cost of power converters. The improved zero-current transition (ZCT) converters achieve …
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Design and implementation of a universal onboard battery fast charger for transportation electrification applications
… golf kart, and buses have different operating voltages, power levels and vehicle ranges. The output voltage of the OBC falls under one of the three possible ranges, 36-72 V, 72-150 V, and 200-450 V, depending on the type of electric vehicle mentioned above. This thesis presents the design of a …
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Driver Based Soft Switch for Pulse-Width-Modulated Power Converters
… control are proposed by analyzing a family of zero-voltage switching converters. The driver based soft switch concept was originated from development of a base driver circuit for current driven bipolar junction transistor (BJT). A new insulated-gate-bipolar-transistor (IGBT) and power …