Journal ArticleDOI
Modeling, Analysis, and Implementation of High Voltage Low Power Flyback Converter Feeding Resistive Loads
TLDR
In this article, an analytical energy-based model is derived, which includes the effect of parasitic capacitances, and is valid for steady state and dynamics of HVLP flyback converters feeding resistive loads.Abstract:
In High Voltage flyback converters, the dominant factor that influences a converter operation is the parasitic capacitance. A significant portion of input energy is utilized in charging the parasitic capacitances of the circuit, which is circulated back to the source at the end of every switching cycle. The circulating energy is a function of output voltage, load power, and parasitic capacitances and remains significant in High Voltage Low Power (HVLP) applications. This energy transfer phenomenon involving parasitic capacitances results in a reduced fraction of input energy reaching the load in every cycle, thereby resulting in an apparent deviation in the converter operating point compared to ideal flyback in case of resistive loads. An analytical energy-based model is derived, which includes the effect of parasitic capacitances, and is valid for steady state and dynamics of HVLP flyback converters feeding resistive loads. The influence of parasitic capacitances on the switch voltage of the converter is exploited to achieve Zero Voltage Switching (ZVS), thereby minimizing the turn- on loss. The proposed analytical model is verified through simulation and experimental results on 1.5 kV/ 5 W and 1.5 kV/ 200 mW resistive loads.read more
Citations
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Proceedings ArticleDOI
Novel Over-Current Protection (OCP) Methodology Applied for Flyback Converters to Improve Accuracy of OCP of Industrial Productions
TL;DR: A novel over-current protection methodology applied for flyback converters is proposed, with advantages of getting immune to input voltage variation and inductance deviation from production-line manufacturing and thus accurate over- current-protection (OCP) is available.
Proceedings ArticleDOI
Modeling and Validation of a High Voltage Driving Circuit for Dielectric Elastomer Actuators
TL;DR: In this paper, a control-oriented model for a novel concept of high-voltage driving circuit is presented, which is specifically devised for actuator applications involving dielectric elastomers (DEs).
Journal ArticleDOI
Novel Overcurrent Methodology for Flyback Converters: Improving Overcurrent in Industrial Productions
TL;DR: A novel Overcurrent (OC) protection methodology applied for flyback converters is proposed, which provides the advantage of immunity to input-voltage variation and inductance deviation from production-line manufacturing, making accurate OC available.
Proceedings ArticleDOI
Topologies For Battery Fed Low Power High Voltage Capacitor Charging Circuits
TL;DR: In this article, modular structure based high voltage low power flyback converter and single primary multiple secondary flyback transformer are discussed for ion mass analyser charging and discharging in low power level (<5W).
Proceedings ArticleDOI
Comparative Evaluation of Isolated dc-dc Converters for Low Power Applications
TL;DR: In this article , the authors examined and evaluated five popular types of isolated dc-dc converters for low-power applications, by examining the performance of converters, the general equations governing these converters have been extracted.
References
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TL;DR: In this paper, the authors present a comprehensive procedure for calculating all contributions to the self-capacitance of high-voltage transformers and provide a detailed analysis of the problem, based on a physical approach.
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Driving high voltage piezoelectric actuators in microrobotic applications
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Journal ArticleDOI
Comparison of resonant topologies in high-voltage DC applications
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Journal ArticleDOI
Efficiency Optimization in Digitally Controlled Flyback DC–DC Converters Over Wide Ranges of Operating Conditions
TL;DR: In this article, a lookup table-based digital controller is applied to achieve on-line efficiency optimization by programming switching frequencies and operating modes based on the efficiency optimization processes, which is verified by experimental results on a low cost 65 W flyback dc-dc prototype.
Journal ArticleDOI
High Voltage Power Supply for Ozone Generation Based on Piezoelectric Transformer
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