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Showing 1 to 20 of 50 for “"Resonant Converters"”.
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State-plane analysis of resonant converters
… technique was adopted for analysis of a class of resonant de to de power converters. A comprehensive method was developed to understand the complex operation of a resonant converter, identify its operating modes along with their regions of occurrence and determine the de characteristics of the …
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Constant-frequency, clamped-mode resonant converters
Two novel clamped-mode resonant converters are analyzed. These clamped-mode converters operate at a constant frequency while retaining many desired features of conventional resonant converters such as fast responses, zero-voltage turn-on or zero-current turn-off, and low EMI levels, etc. The …
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Resonant converters : topologies, dynamic modeling and control
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1987.
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Accurate Small-Signal Modeling for Resonant Converters
In comparison with PWM converters, resonant converters are gaining increasing popularity for cases in which efficiency and power density are at a premium. However, the lack of an accurate small-signal model has become an impediment to performance optimization. Many modeling attempts have been made …
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Stress and loss analysis of quasi-resonant converters
Quasi-Resonant Converters (QRCs) have been proposed recently in the effort of increasing the switching frequency and reducing the switching losses. There are several merits and demerits of this class of converters. The most important aspects of this research are to assess the advantages and …
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Topology Investigation and System Optimization of Resonant Converters
… airspace applications. Conventional PWM dc-dc converters have relatively low power transfer efficiency and low power density. In contrast, resonant dc-dc converters have numerous advantages for dc-dc power conversions. In this work, topologies and system optimization of resonant converters are …
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State-Trajectory Analysis and Control of LLC Resonant Converters
… more power delivery with smaller spaces. The LLC resonant converter has been widely adopted for these applications due to the advantages in high efficiency, high power density and holdup time operation capability. However, unlike PWM converters, the control of the LLC resonant converter is much …
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Computer-aided design and analysis of series resonant converters
… facilitate the design and analysis of a series resonant converter. Using the program, the values of the inductor and capacitor of the resonant tank can be easily determined to meet design specifications. Following the design, a dc analysis is performed to determine such salient parameters as …
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Selection of Primary Side Devices for LLC Resonant Converters
… for high power density, high efficiency bus converters has increased interest in resonant topologies, particularly the LLC resonant converter. LLC resonant converters offer several advantages in efficiency, power density, and hold up time extension capability. Among high voltage (>500V) …
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Equivalent Circuit Model of High Frequency PWM and Resonant Converters
… control are widely used as point-of-load (POL) converters and voltage regulators (VR) in DPS systems. Series resonant converters (SRC) are widely used in aerospace systems and LLC resonant converters are widely used as Front-end converters in DPS systems. The technological innovations bring …
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Investigation of Topology and Integration for Multi-Element Resonant Converters
… power delivery with smaller spaces. The LLC resonant converter has been widely adopted for these applications due to the advantages in high efficiency, high power density and holdup time operation capability. However, LLC resonant converter meets some issues, especially in high output current …
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Use of IGT/COMFET in zero current quasi resonant converters
… associated with IGT/COMFET devices in PWM converters, such as turn off current tailing and latching are largely avoided in a resonant converter. Dynamic saturation loss is identified as the predominant power loss in IGT/COMFET devices for very high frequency resonant operation. Device …
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Design Optimizations of LLC Resonant Converters with Planar Matrix Transformers
LLC resonant converters have been a popular choice for DC-DC converters due to their high efficiency, high power density, and hold-up capability in power supplies for communication systems, datacenters, consumer electronics, and automobiles. With the rapid development of wide-bandgap devices and …
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Optimization of LLC Resonant Converters: State-trajectory Control and PCB based Magnetics
… It is very challenging to design isolated DC/DC converters for datacenters since they are required to provide low-voltage high-current output and fast transient response. The LLC resonant converters have been widely used as the DC-DC converter in off-line power supplies and datacenters due to its …
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Comparison of input current spectral components for flyback PWM and resonant converters
… Zero-Current-Switched Quasi-Resonant-Converter, and Zero-Voltage-Switched Quasi-Resonant-Converter are derived in terms of normalized circuit parameters. These analytical results are tested against experimental results. The same numerical example is presented for these three …
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Design and Integration Techniques for High-Frequency PCB-Based Magnetics in Resonant Converters
In today's industrial power converters, converter reliability is essential, and converter topologies are well-established. Without a doubt, the power electronic industry continues to seek efficient power delivery and high power density. Resonant converters, especially LLC converters, have been …
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Microcontroller (MCU) Based Simplified Optimal Trajectory Control (SOTC) for High-Frequency LLC Resonant Converters
The LLC resonant converter has been widely used as a DC-DC converter due to its high efficiency, high power density and hold-up capability in power supplies for communication systems, computers and consumer electronics. Use of the high-frequency LLC converter has also been increasing in recent …
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Improved Resonant Converters with a Novel Control Strategy for High-Voltage Pulsed Power Supplies
… volume. For non-isolation topologies, PWM converters can achieve soft switching to increase switching frequency. However, for this application, due to the large voltage regulation range and high voltage transformer nonidealities, it is difficult to optimize PWM converters. Secondary diode …
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Extended describing function method for small-signal modeling of resonant and multi-resonant converters
… for PWM topologies and various soft-switching resonant topologies. The proposed method is demonstrated using four resonant topologies and two multi-resonant topologies. These circuits are strongly oscillatory, and thus they cannot be modeled by means of traditional averaging techniques. By …
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Zero-voltage switched resonant and PWM converters: design-oriented analysis and performance evaluation
… is developed to optimize implementation of the converters in terms of efficiency. Efficiency optimization requires minimizing the circulating currents which are directly proportional to the reactive energy required by the resonant tank. The comparison of the different converters is based on the …
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