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Showing 1 to 20 of 23 for “"Snubber"”.
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Design of a Resonant Snubber Inverter for Photovoltaic Inverter Systems
… limited to higher power levels. The resonant snubber inverter is a soft switching topology that eliminates many of these problems by taking advantage of the bipolar switching action of the power stage switches. This allows for a significant size reduction in the additional parts and …
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A Novel Auxiliary Resonant Snubber Inverter Using Wide Bandgap Devices
… to be implemented. A novel auxiliary resonant snubber is introduced. The design and operation are carried out, in which this snubber circuitry enables main Gallium Nitride (GaN) switches operating under zero voltage switching (ZVS) condition, and auxiliary Silicon Carbide (SiC) diodes switching …
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High Power Inverter EMI Characterization and Improvement by Auxiliary Resonant Snubber Inverter
… The noise reduction in an auxiliary resonant snubber inverter (RSI) is presented. The observation of voltage ringing and current ringing and the methods to suppress these ringing in the implementation of RSI are also discussed. The test condition and circuit layout are described as the basis …
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A Comparison between Different Snubbers for Flyback Converters
… are always implemented with some sort of snubber circuit that can clamp any voltage spikes that may appear across their switch. There are two types of snubbers: passive snubbers that consist of passive electrical components such as capacitors, inductors and diodes and active snubbers, that …
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Soft-Switching, Interleaved Inverter for High Density Applications
… A novel interleaved auxiliary resonant snubber for high-frequency soft-switching is introduced. The design of an auxiliary resonant snubber is discussed; this allows the main GaN MOSFETs to achieve zero voltage switching (ZVS). The auxiliary switches and SiC diodes achieve zero current …
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Characterization of Gate Controlled Diodes for IGCT Applications
… sein. In aktuellen Anwendungen sind RC-Snubber eine einfacher Ansatz zur Spannungssymmetrierung zwischen den in Reihe geschalteten IGCTs und Dioden. Diese Snubberbeschaltungen haben unerwünschte Effekte wie erhöhte Schaltverluste, Platzbedarf und erhöhte Kosten zur Folge. Der Inhalt der …
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Improvements in integrated high-quality rectifier-regulators
… control, swinging choke, and low loss LC snubber techniques are proposed to alleviate these problems. Finally, several experimental converters with different specifications are evaluated with respect to efficiency and ability to meet the IEC555-2 standards.
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Innovative GTO Thyristor Based Switches Through Unity Gain Turn-Off
… ETO based power system simpler in terms of dv/dt snubber, di/dt snubber and over current protection, resulting in significant savings at the system level. Experimental and numerical simulation results that demonstrate the advantages of the ETO are presented. A new family of snubberless turn-off …
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Bidirectional DC-DC Power Converter Design Optimization, Modeling and Control
… the DCM induced high peak current is reduced by snubber capacitor. The energy stored in the capacitor needs to be discharged before device is turned on. A complementary gating signal control scheme is employed to turn on the non-active switch helping discharge the capacitor and diverting the …
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Advanced Semiconductor Device and Topology for High Power Current Source Converter
… and reverse voltage blocking capability. The snubberless turn-on capability is preferred for a semiconductor device in a power conversion system, and can be achieved for devices with forward biased safe operation area (FBSOA). The FBSOA of the ETO is investigated and experimentally …
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Modeling and numerical methods for power electronic devices
… to the model to account for the effect of the snubber circuit. An Elementary Effects algorithm and a Bayesian inference routine are used to fit the averaged model to a more expensive netlist model. State-space models can also be used with the sampled-data method for state vector simulation. …
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High-performance gallium nitride power devices with efficient edge termination structures compliant with plasma-assisted molecular-beam epitaxy based silicon nitride shadowed selective-area growth technique
… diodes perfectly fit in the role of snubber diodes in high-speed switching power applications.
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Improved Forward Topologies for DC-DC applications with Built-in Input Filter
… design. Usually an additional circuit such as a snubber circuit or a clamp circuit or the soft-switching technique is used to absorb these voltage spikes. Consequently, the leakage inductance is intentionally minimized in the PWM power conversion technique so that it will not degrade the circuit …
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Power electronic transformers for AC-AC and AC-DC conversion with reduced number of switches
… with leakage energy commutation and additional snubber circuits are not required for this converter. The proposed modulation provides the advantages of unity power factor on the AC side, galvanic isolation and bi-directional power flow capability. Both these PETs have been analyzed and …
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Active Source Management to Maintain High Efficiency in Resonant Conversion over Wide Load Range
… non-synchronous conditions, a low-loss current snubber is proposed as a safety measure to replace lossy diodes. The center-piece of the dissertation is the proposal of a two-phase zero-voltage switching buck pre-regulator, as it enables fixed frequency and synchronous operation of the inverter …
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Analysis and design of a high frequency induction-heating system
… mode of operation eliminates the need for any snubber circuit components in both the DC-DC and DC-AC converters at this power level. An overview into various applications and technologies of induction-heating is presented in this research. A detailed analysis of the induction-heating coil and …
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High-Efficiency Low-Voltage High-Current Power Stage Design Considerations for Fuel Cell Power Conditioning Systems
… and termination losses, skin effect losses, snubber losses, capacitor equivalent series resistance (ESR) losses, and body diode related losses. Many of the losses can be avoided by carefully designing the system. Therefore, in order to optimize efficiency, the designer should be aware of …
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Application of High-Power Snubberless Semiconductor Switches in High-Frequency PWM Converters
… turn off without the requirement for a turn-off snubber. With these new device technologies the high-power field of power electronics can realize dramatic improvements in the performance of systems for utility applications and motor drives. However, with these high-speed switches come new issues …
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Design, Modeling and Control of Bidirectional Resonant Converter for Vehicle-to-Grid (V2G) Applications
… be ensured in all switches without additional snubber or clamp circuitry. Because of soft-switching in all switches, very high-frequency operation is possible, thus the size of the magnetics and the filter capacitors can be made small. To further reduce the size and cost of the converter, a …
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High Frequency, High Current Density Voltage Regulators
… side synchronous rectifier (SR) as the snubber capacitor of the primary-side switches. Compared to the external driver, the proposed converter can save driving loss and synchronous rectifier body diode conduction loss. Additionally, compared to the existing level-shifted self-driven …
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