A high voltage split source voltage multiplier with increased output voltage

Katzir, Liran; Shmilovitz, Doron

doi:10.1109/apec.2015.7104821

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…In high-output-voltage applications, a voltage multiplier circuit is used to obtain a much higher output voltage by using a rectifier diode and a capacitor [15][16][17][18][19]. For example, in the case of a parallel resonant converter used in high-output-voltage applications such as medical devices, because the output voltage is greater than 5 kV, voltage multiplier circuits are mostly used at the rectifier stage of the converter.…”

Section: Analysis Of the Secondary Side Voltage Multipliermentioning

confidence: 99%

High Power Density, High-Voltage Parallel Resonant Converter Using Parasitic Capacitance on the Secondary Side of a Transformer

Kwon

Kim

2021

Electronics

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High-voltage DC power supplies are used in several applications, including X-ray, plasma, electrostatic precipitator, and capacitor charging. However, such a high-voltage power supply has problems, such as a decrease in reliability, owing to an increase in output ripple voltage, and a decrease in power density, owing to an increase in volume. Therefore, this study proposes a method for improving the power density of a parallel resonant converter using the parasitic capacitor of the secondary side of the transformer. Due to the fact that high-voltage power supplies have many turns on the secondary side, a significant number of parasitic capacitors are generated. In addition, in the case of a parallel resonant converter, because the transformer and the primary resonant capacitor are connected in parallel, the parasitic capacitor component generated on the secondary side of the transformer can be equalized and used. A parallel cap-less resonant converter structure developed using the parasitic components of such transformers is proposed. Primary side and secondary side equivalent model analyses are conducted in order to derive new equations and gain waveforms. Finally, the validity of the proposed structure is verified experimentally.

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Section: Analysis Of the Secondary Side Voltage Multipliermentioning

confidence: 99%

High Power Density, High-Voltage Parallel Resonant Converter Using Parasitic Capacitance on the Secondary Side of a Transformer

Kwon

Kim

2021

Electronics

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“…By utilising AC source, the transformer shows a results of inefficiency of bulk and cost, then the problem of ripple voltage is unsolved. With the usage of the transformer, the turn large ratio inviting high current and voltage stresses with higher switching losses on the switches.On the other parts, the high voltage spikes on the main switch and high power dissipation of the converter occurs [4,5,[10][11][12]. The use of the transformer will prevent the development of compact converter.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, this implemented circuit has the advantages of compactness and cost-efficiency [17,21,22,28]. Major shortcomings produced by the multiplier circuit are voltage drop and ripple voltage due to the ac impedance of the capacitors [10]. When focusing on the voltage multiplier circuit, high ripple voltage is generated when low frequency is applied in the range of 50 to 60 Hz [2,4,23,26,29].…”

Section: Introductionmentioning

confidence: 99%

A Novel 1.6 Kv High Voltage Low Current Step-Up Dc-Dc Converter With Cockcroft-Walton Voltage Multiplier for Power Supply Modules

et al. 2019

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A high dc voltage is commonly used in many process industries in testing, research laboratories and others. Currently, a high voltage dc is implemented using transformer. In this paper, a novel high voltage low current transformerless step-up dc-dc converter is presented. The proposed design consists of two step-up dc-dc converters with negative feedback signal and 15 stages of Cockcroft-Walton (C-W) voltage multiplier. The dc input voltage of 5 V triggers the first step-up dc-dc converter circuit to generate 30 V dc voltage and the second step-up dc-dc converter circuit boosts up to 100 V dc voltage. Further, diode-capacitor multiplier circuit is connected at the final stage to achieve 1.6 kV dc output voltages at 200 kHz switching frequency. The simulation results indicate that the proposed dc-dc converter can generate 1.548 kV dc voltage with a load current of 0.16 mA at 10 MΩ load resistor. Meanwhile, the experiment results show that the proposed dc-dc converter can generate 1.475 kV dc voltage with 80 % efficiency. The results validate both the simulation and experimental of the proposed high dc voltage power supply module.

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