Load voltage stabilization of noncontact energy transfer using three resonant circuit

2003 ◽  
Author(s):  
H. Abe ◽  
H. Sakamoto ◽  
K. Harada
Keyword(s):  
Energy Transfer ◽  
Resonant Circuit ◽  
Voltage Stabilization ◽  
Load Voltage

High efficiency contactless energy transfer system with power electronic resonant converter

2009 ◽  
Vol 57 (4) ◽  
pp. 375-381 ◽  
Author(s):  
A. Moradewicz ◽  
M. Kazmierkowski
Keyword(s):  
Energy Transfer ◽  
High Efficiency ◽  
Laboratory Model ◽  
Resonant Circuit ◽  
Transfer System ◽  
Power Electronic ◽  
Resonant Converter ◽  
Power Transistors ◽  
Zero Current Switching ◽  
Zero Current

High efficiency contactless energy transfer system with power electronic resonant converterA novel Inductive Contactless Energy Transfer (ICET) system is presented in this paper. The energy is transferred using a rotatable air gap transformer and a power electronic converter. To minimize total losses of the system a series resonant circuit is applied, assuring zero current switching condition for IGBT power transistors. The analytical expression of the transfer dc voltage gain is given and discussed. The developed ICET system is characterized by high efficiency and fast FPGA based controller and protection system. The resonant frequency is adjusted by extreme regulator which follows instantaneous value of primary peak current. Simulated and experimental results which verify and illustrate operation of developed 3 kW laboratory model are presented.

scholarly journals Resonant Circuit Response for Contactless Energy Transfer under Variable PWM

2017 ◽  
Vol 7 (1) ◽  
pp. 41-47 ◽  
Author(s):  
A. Badawi ◽  
◽  
S. A. Kazmi ◽  
R. I. Boby ◽  
M. H. Shah ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Resonant Circuit

scholarly journals Development of the structure and circuit solution of a bidirectional wireless energy transmission system for swarm robots

2021 ◽  
Vol 18 (2) ◽  
pp. 171-192
Author(s):  
Konstantin Krestovnikov ◽  
Ekaterina Cherskikh
Keyword(s):  
Energy Transfer ◽  
Autonomous Robots ◽  
Resonant Mode ◽  
Optimal Number ◽  
Reverse Direction ◽  
Resonant Circuit ◽  
Transmitted Power ◽  
Energy Transmission ◽  
Transmission Distance ◽  
Limit Value

This paper presents development of a circuit solution design for a bidirectional wireless energy transfer system, based on a resonant self-oscillator. The operation principle of the developed circuit solution in receiving and transmitting mode is described and the elementary circuit diagram is presented together with design ratios. Coil parameters for the resonant circuit are calculated, optimal number of turns in coils is presented, based upon the specified limit value of permissible current. The dependencies of system efficiency from transmitted power, maximum transmitted power, and energy transmission distance are obtained. The developed design, which includes the step-up DC-DC converter, allows to obtain the voltage on the output of the receiving system, equal to or higher than the voltage of the power source of the transmitting system. The specific feature of the proposed system is that it does not require a dedicated control system for operation in resonant mode and changing direction of power transfer. Resonance in transmitting and receiving coils can be maintained, even when their mutual layout is changed, due to utilization of identical resonant circuits and a self-oscillator. Application of the proposed solution is relevant for energy transfer among autonomous robots with limited positioning accuracy, as well as for energy transfer from power supply to robot or in reverse direction.

scholarly journals Resonant frequency stabilization technique in series-series contactless energy transfer systems

2017 ◽  
Vol 66 (3) ◽  
pp. 547-558 ◽  
Author(s):  
M. Marcinek ◽  
M. Hołub ◽  
S. Kalisiak ◽  
R. Pałka
Keyword(s):  
Energy Transfer ◽  
Phase Shift ◽  
Resonant Frequency ◽  
Resonance Frequency ◽  
Frequency Stabilization ◽  
Resonant Circuit ◽  
Power Circuit ◽  
In Series ◽  
Stabilization Technique ◽  
Zero Phase

AbstractA technique for stabilization of resonant frequency is proposed in this paper. An additional power circuit, a compensator that allows keeping constant resonance frequency was introduced by the authors. In the presented solution the resonant circuit frequency stabilization is achieved by forcing a zero phase shift between the current and the voltage of the main switching module.

A quantitative approach to inner shell losses

1978 ◽  
Vol 36 (1) ◽  
pp. 526-527 ◽  
Author(s):  
R.D. Leapman ◽  
P. Rez ◽  
D.F. Mayers
Keyword(s):  
Energy Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Accurate Determination ◽  
Background Intensity ◽  
Core Excitation ◽  
Quantitative Basis ◽  
Cross Section Differential ◽  
Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

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