A Split-Source Multisection High-Voltage Power Supply for X-Ray

Katzir, Liran; Shmilovitz, Doron

doi:10.1109/jestpe.2015.2477076

Cited by 24 publications

(7 citation statements)

References 37 publications

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“…Ideally, when n modules are cascaded, one can reduce the ripple ratio by n times or more using this phase interleaving technique. Previous works [13], [43]- [45] have investigated the idea of reducing the output voltage ripple by segmenting a voltage multiplier and driving each segment at staggered phases.…”

Section: B System Powered By a Pulsed Lasermentioning

confidence: 99%

High Voltage Generation by Fiber-Coupled Pulsed Laser for a Simple Receiver Circuit Structure

Park¹,

Rivas-Davila²

2021

Preprint

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Almost all high-voltage dc generation for lowpower applications is done by either electrostatic machines or voltage multipliers. Electrostatic machines use mechanically moving parts to transfer charge and energy from the lowvoltage side to the high-voltage side. Voltage multipliers use capacitive and inductive networks to achieve the same purpose of energy transfer. Considering the pros and cons inherent in those mechanical, capacitive, and inductive energy transfer, a new means of energy transfer may provide a superior design of a high voltage dc generator. Here we investigate the design of high voltage generators based on optical power transfer. Optical power delivered via fiber-optic cable allows extensive input-tooutput dc insulation and spatial separation. These characteristics lead to advantages with respect to ease of insulation, ease of electromagnetic shielding, and scalability. We experimentally validate the idea by building and testing a 5.5 kV dc generator module solely powered by a 20 kHz pulsed laser, and cascading three of those modules to obtain 14.7 kV dc output voltage. We then discuss possible improvements to the circuit design to make it useful for real-world applications. Finally, we demonstrate an optically powered electroadhesion gripper to show the practicality of the proposed high voltage generator.

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Section: B System Powered By a Pulsed Lasermentioning

confidence: 99%

High Voltage Generation by Fiber-Coupled Pulsed Laser for a Simple Receiver Circuit Structure

Park¹,

Rivas-Davila²

2021

Preprint

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“…The HWCW is a multiplier circuit widely used in power electronics [23] in the generation of high DC voltages. Therefore, it has typically been implemented in particle accelerators [24], X-ray machines [25], and cathode ray tube televisions [26].…”

Section: Circuitmentioning

confidence: 99%

RF Energy Harvesting System Based on an Archimedean Spiral Antenna for Low-Power Sensor Applications

Alex‐Amor

Palomares‐Caballero

Fernández-González

et al. 2019

Sensors

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This paper presents a radiofrequency (RF) energy harvesting system based on an ultrawideband Archimedean spiral antenna and a half-wave Cockcroft-Walton multiplier circuit. The antenna was proved to operate from 350 MHz to 16 GHz with an outstanding performance. With its use, radio spectrum measurements were carried out at the Telecommunication Engineering School (Universidad Politécnica de Madrid) to determine the power level of the ambient signals in two different scenarios: indoors and outdoors. Based on these measurements, a Cockcroft-Walton multiplier and a lumped element matching network are designed to operate at 800 MHz and 900 MHz frequency bands. To correct the frequency displacement in the circuit, a circuit model is presented that takes into account the different parasitic elements of the components and the PCB. With an input power of 0 dBm, the manufactured circuit shows a rectifying efficiency of 30%. Finally, a test is carried out with the full RF energy harvesting system to check its correct operation. Thus, the RF system is placed in front of a transmitting Vivaldi antenna at a distance of 50 cm. The storage capacitor has a charge of over 1.25 V, which is enough to run a temperature sensor placed as the load to be supplied. This demonstrates the validity of the RF energy harvesting system for low-power practical applications.

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“…This arrangement has the advantage that scaling up a design becomes a trivial exercise as, rather than having to redesign the whole design from first principles, to increase the operational current of the supply, one simply needs to add additional stacks to the existing design. Using multiple stacks also reduces voltage ripple, providing they each operate out of phase [8].…”

Section: Increasing the Current Outputmentioning

confidence: 99%

An investigation into the suitability of insulated core transformer technology for an ultra high voltage power supply

Frost

Lewin

Spong

2019

IEEE Trans. Dielect. Electr. Insul.

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A growing area of interest is HVDC supplies. This paper represents an initial study into possible designs of HVDC transformers that could provide 2 A at 1 MV, with the added specification that any proposed technology should be scalable to 5 A at 5 MV. Insulated core transformers (ICTs) have been initially selected as a potentially suitable technology. Careful design of the ICT magnetic core is required to ensure that flux loss is limited so that higher voltages are achievable. Simulation studies have shown that the voltage produced in an ICT does not scale linearly, meaning that there is an effective limit to the voltage that they can produce. In addition to this, a technique is proposed to increase the available current output of an ICT. The full analysis is presented in this paper.

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A Split-Source Multisection High-Voltage Power Supply for X-Ray

Cited by 24 publications

References 37 publications

High Voltage Generation by Fiber-Coupled Pulsed Laser for a Simple Receiver Circuit Structure

High Voltage Generation by Fiber-Coupled Pulsed Laser for a Simple Receiver Circuit Structure

RF Energy Harvesting System Based on an Archimedean Spiral Antenna for Low-Power Sensor Applications

An investigation into the suitability of insulated core transformer technology for an ultra high voltage power supply

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