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Showing 1 to 18 of 18 for “"DC/AC inverter"”.
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A Soft-Switched Grid-Connected DC/AC Inverter with Low Current Ripple
… the utility grid infrastructure is based on AC, DC/AC inverters are commonly used in renewable energy harvesting systems as the interface to the utility grid. The focus of this thesis is on the design and development of highly-efficient DC/AC inverters for future energy systems. Typically, …
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Control Design of a Single-Phase DC/AC Inverter for PV Applications
… controller designs of a 2 kVA single-phase inverter for photovoltaic (PV) applications. The demand for better controller designs is constantly rising as the renewable energy market continues to rapidly grow. Some background research has been done on solar energy, PV inverter configurations, …
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Comparison and Design of High Efficiency Microinverters for Photovoltaic Applications
… due to recent developments in PV panel manufacturing that decreases material costs and improves energy harvesting efficiency. Since PV sources are DC sources power conversion stages have to be used in order to interface this power to the existing electrical utility system. The structure of …
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Analysis and design of a high frequency induction-heating system
… to 200kHz. The system essentially comprises a DC-DC converter configured as a controlled current source, which feeds a load resonant DC-AC inverter, driving a parallel resonant load circuit. The load circuit comprises an induction-heating coil and a reactive power compensating capacitor. The …
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Design and Analysis of Piezoelectric Transformer Converters
Piezoelectric ceramics are characterized as smart materials and have been widely used in the area of actuators and sensors. The principle operation of a piezoelectric transformer (PT) is a combined function of actuators and sensors so that energy can be transformed from electrical form to …
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Modified Control for Single-Phase Fuel Cell Systems with Input Ripple Compensation and Improved Output Quality
… associated with their applications consist of a DC-DC converter stage and a DC-AC inverter stage. In a single-phase fuel cell system, the single-phase inverter introduces a second harmonic component in the current drawn from the fuel cell source. This low-frequency current ripple has been found …
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Design and modeling of a power conditioning system for the hybrid fuel-cell/turbine power plant.
… to utility grid. The proposed system consists of DC/DC converters, a grid-connected sinusoidal pulse width modulation (SPWM) DC/AC inverter, and an LCL filter. To regulate and stabilize the DC link voltage, DC/DC converter with PI controller is adopted. With three-phase SPWM inverter, both active …
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Simulation and study of harmonic interference in power line communications
… carrier systems are, at present, the most attractive C&LC systems. Recently, dispersed generation - photovoltaics, wind energy, small scale hydro - is introduced to power systems. The introduction of small scale dispersed generation sources degrades the performance of PLC systems by injecting …
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Planar transformer isolated DC-DC Converter for Solid-State Transformer
… is typically formed by three stages, one being DC/AC inverter, which is controllable, one being medium-frequency transformer isolated converter and the other being AC/DC rectifier, has been developed quickly during past few decades to replace traditional 50Hz transformer. In SST, the use of …
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Generalized Terminal Modeling of Electro-Magnetic Interference
… In this work a two- and three-terminal black box model is proposed for electro-magnetic interference (EMI) characterization. The modeling procedure starts with a time-variant system at a particular operating condition, which can be a converter, set of converters, sub-system or collection …
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Multiphase Isolated DC-DC Converters for Low-Voltage High-Power Fuel Cell Applications
… for such applications generally consists of a dc-dc converter and a dc-ac inverter, and the dc-dc converter for low-voltage, high-power fuel cells must deal with a high voltage step-up conversion ratio and high input currents. Although many dc-dc converters have been proposed, most deal with …
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Facilitating seamless transitions in flexible microgrids: A unified control systems framework for enabling multi-mode inverters
… grid performance, stability, and reliability. Inverter-based microgrids offer a promising solution for the large-scale integration of renewable resources, which often come with a high degree of uncertainty. However, the current state-of-the-art typically employs highly specialized control …
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Three Dimensional Passive Integrated Electronic Ballast for Low Wattage HID Lamps
… applications due to their merits of high efficacy, long life, compact size and good color rendition [2-4]. However, HID lamps require a well-designed ballast to stabilize the negative VI characteristics. A so-called ignitor is also needed to provide high voltage to initiate the gas discharge. …
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A Novel High-Power High-Efficiency Three-Phase Phase-Shift DC/DC Converter for Fuel Cell Applications
… is the dominating topology in high power dc/dc applications. Although multiphase converters have been proposed, most of them are dealing with high input-voltage systems, and their device characteristic is not suitable for a low voltage source such as a fuel cell. For a high power fuel cell …
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Soft Switching Control and Loss Analysis for High Frequency Power Converters
… to the need for bulky filter inductors and capacitors. Wide bandgap (WBG) power semiconductor devices are considered game-changing devices to overcome the limitation posed by traditional Si counterparts, enabling us with much higher switching speed and lower switching loss. However, when the …
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Soft-switched, active-clamped DC/AC and AC/AC converters for IPT-based wireless charging applications
The acquisition of inductive power transfer (IPT) technology in commercial electric vehicles (EVs) alleviates the inherent burdens of high cost, limited driving range, and long charging time. In EV wireless charging systems using IPT technology, power electronic converters play a vital role to …
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A Novel Auxiliary Resonant Snubber Inverter Using Wide Bandgap Devices
In the application of power inverters, power density has become a key design specification where it has stringent requirements on system size and weight. Achieving high power density need to combine lasted wide bandgap (WBG) device technology and high switching frequency to reduce passive filter …
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Toward high-efficiency high power density single-phase DC-AC and AC-DC power conversion - architecture, topology and control
Power conversion between the single-phase AC grid and DC sources or loads plays an indispensable role in modern electrical energy system for both generation and consumption. The renewable resources and electrical energy storage are integrated to the grid through inverters. Telecoms, data centers …