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This paper proposes a compact VHF-band OOK transmitter that uses coils for radiation as well as oscillation, eliminating the need for an external antenna. This feature contributes to fewer number of components, smaller volume and and lower cost. We prototyped the transmitter with 2.8 mm × 2.8 mm × 4.2 mm volume. For shortening the startup time and enabling high-speed communication, we devise a scheme...
This paper proposes a contactless power supply system for automated guided vehicles (AGVs) with a topology of two receiving coils. The study features balanced dual output capability for charging motors of the front and the back wheel of AGVs simultaneously, and they can be charged while moving along the rail. The equivalent resonance circuit configuration is established and characteristics of mutual...
It is crucial in near field communication (NFC) controllers for power source transferred from mutual induction of coils when the devices are battery-off. NFC devices can be operated at the condition of low battery or even battery-off due to the requirement of payment any time. Thus, the proposed wireless power transfer (WPT) power supply can have high efficiency due to the remove of reverse leakage...
In-motion Wireless Power Transfer (IM-WPT) is the ability of charging the battery of an EV while it is in motion. This paper introduces a review of IM-WPT charging. The main issuses relatted to; the technology associated, infrastructure and current challenges faced in research and the market scenario are addressed along the paper.
Electromagnetic (EM) Diagnostics is one of the most important diagnostics tools to measure the key parameters such as the current, position, loop voltage and Magneto Hydro Dynamic MHD activities of the plasma in SST1 (Steady State Tokamak), designed for long pulse (1000 s) operation. A frontend electronic scheme for conditioning the dynamic (10mV to 2V) range of signals over the entire time span is...
In the article two wireless electrical equipment power supply systems were discussed. The systems containing two and three air-core coils placed in various distances from one another were presented. Tests were conducted with the objective to identify the highest efficiency of the system with the transmission of 5 W to the distance of 50 mm. In the article operation of the systems was examined in the...
Inductive Power Transfer (IPT) systems have been proposed for various applications and have been increasingly gaining interest for electric vehicle (EV) charging. Numerous magnetic structures have been proposed for IPT systems for EV charging including structures involving mutually decoupled coils. This paper presents an analytical model of an IPT system composed of a two coil primary pad and a single...
Very often biological tissues need to be treated inside of a biomedical centrifuge even during the centrifugation step without process interruption. In this paper an advantageous energy transfer method capable of providing sufficient electric power for the rotating and active part is presented.
Arrayed micro actuators are increasingly used with various kinds of driving methods, especially to realize planar conveyance tasks. Using this concept, the flexible micro electromagnetic conveyor system presented in this paper has been developed. The presented system consists of arrayed elementary cells which can move a mobile pallet placed on its top side. To ensure long range motion flexibility,...
Inductive Power Transfer (IPT) is a promising solution for charging the electric vehicles (EVs). The first IPT systems (IPTSs) were needing a strong coupling between transmitter and receiver coils to achieve a satisfactory efficiency in the power transfer. Nowadays this drawback has been overcome by the resonant technology, which ensures an efficiency higher than 90% even with loosely coupled coils...
This paper proposes an isolated DC-DC converter for Power-Supply on chip (SoC) realized by the couple of air-core coils. The pro-posed isolated DC-DC converter is evaluated by numerical simulations and experimental results. The fabricated prototype DC-DC converter works well and the simulation results are good agreement with experimental results. This paper also discusses the potential of proposed...
Recent development in modular converter topologies have raised the discussion about exploiting the inherent redundancy of such converters in order to maximize their availability. One such solution involves the replacement of power electronic building blocks (PEBBs) during operation, a procedure also referred to as ‘hot swap’. Hot swap is considered as state-of-the-art in today's IT systems and low...
Ultra compact high power primary energy sources especially for single use can be built in many ways, the high energy density capacitors and the FCGs (Flux compression generators) are the core components. The pulsed power capacitors have made great progress now, for example, the energy storage density of the self-healing type metal film capacitors has more than 2kJ/L [1]. We can use these capacitors...
As a flexible and controllable auxiliary heating method, electron cyclotron resonance heating and current drive has been widely used in various plasma confinement devices and also will be used on J-TEXT. The main parts of the J-TEXT electron cyclotron systems under development are donated by the Culham Science Center, including six 60 GHz/200 kW/5 s (0.5 s) gyrotrons, six magnets and auxiliary power...
The Advanced Divertor eXperiment (ADX) [1] is a compact, high field (6.5 T with possible upgrade to 8 T), high power density tokamak being proposed to test new advanced divertor concepts at reactor-level conditions. Development and testing of advanced Lower Hybrid Current Drive (LHCD) and Ion Cyclotron Range of Frequency (ICRF) concepts including high-field-side launch capability is also an important...
The National Spherical Torus Experiment (NSTX) is undergoing a significant upgrade. The upgrade increases the toroidal field and pulse length, adds three new diverter coils and a second neutral beam injection (NBI) system. The magnet coil power supply systems for the NSTX have been redesigned with many modifications to reflect NSTX upgrade needs. The NSTX power supply system includes three major parts...
The dynamic resonant magnetic perturbation (DRMP) coils have been designed to study the feedback control of tearing mode (TM) instability in J-TEXT tokamak with rotating resonant magnetic perturbation. The AC power supply system energizing coils should have the ability of controlled current frequency in the range of 1 kHz to 5 kHz and amplitude of 5 kA peak value at 5 kHz. In further study, TM will...
ADITYA tokamak, an air-core, mid-sized (R0 = 75 cm, a = 25 cm) ohmically heated circular limiter tokamak, regularly being operated to carry out several experiments related to controlled thermonuclear fusion research. During recent operation campaign, special efforts are made to enhance the discharge performance as well as plasma parameters. Repeatable plasma discharges of maximum plasma current of...
The main objective of the WEST project is to test the actively cooled tungsten plasma facing components under high flux conditions and to provide relevant information to ITER [1]. In this framework, two new power supplies will be installed in Tore Supra in order to feed the new upper and lower divertor coils. These new coils are installed inside the vacuum vessel to modify the magnetic configuration...
In order to solve the possible detuning problem which may appear in the resonant wireless power transmission (WPT) system, a new type of the frequency control technology is proposed. The frequency of the power supply and the inherent frequency of the transmitting circuit are controlled to scan the possible frequency range of the inherent frequency of the receiving circuit in order to analyze the inherent...
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