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A Simple Method for a Capacitor''s ESR Measurement
Accurate modeling of power electronic converters, i.e., obtaining control to output transfer function, must include series resistance of capacitors and inductors. A simple method...
Electronics | Free Full-Text | Research and Application of …
Capacitive power transfer (CPT) uses an electric field as the transfer medium to achieve wireless power transfer (WPT). Benefitting from the low eddy current …
Capacitance measurement circuit based on the …
Whatever the measurement method, direct MCU interface circuits for capacitive sensors are sensitive to parasitic capacitances, which increase the measurement uncertainty, particularly when ...
A High-Resolution Analytical Thermal Modeling Method of Capacitor …
Abstract: Thermal stress is of crucial importance to capacitor reliability. However, for a capacitor bank, on spatial scale, the complex heat transfer modes are not clearly illustrated; and on time scale, the equivalent series resistance (ESR) aging is neither fully discussed in current evaluation methods.
Asymmetric Bidirectional Capacitive Power Transfer Method With …
Abstract: Bidirectional capacitive power transfer technology makes it possible for energy sharing among multiple electronic devices. This article proposes an …
A Self-Tuning Method for Performance Enhancement of Wireless Power Transfer …
The performance of wireless power transfer (WPT) system is dependent on resonance between coil inductor and compensation capacitor. However, temperature variation or aging would lead to capacitance drift of the compensation capacitor. This factor causes detuning of the WPT system which affects power transfer performance. In order to solve the …
An Efficient Power and Data Synchronous Transfer Method for Wireless Power Transfer …
To achieve power and data synchronous transfer efficiently in the wireless power transfer system, a novel injection wireless communication method is proposed. Combined with the characteristic of the double-D coupling coil, the data are directly injected into one of the D coils and can be entirely coupled to the data receiving …
An Introduction to Switched-capacitor Circuits
Great article and very clear writing thank you for doing such a nice job. A few thoughts… Switched capacitor circuits have a wide range of use cases from active filters, PLLs, to charge pumps etc. The are some disadvantages to keep in mind in practical application of these circuits. Specifically generating the switching phases of the clocks …
A Simple Method for a Capacitor''s ESR Measurement
Accurate modeling of power electronic converters, i.e., obtaining control to output transfer function, must include series resistance of capacitors and inductors.1. Model of capacitor under test ...
A Tuning Method for Wireless Power Transfer System against Dual-side Capacitance Drift Based on Equivalent Impedance Decoupling
This paper proposes a tuning method for wireless power transfer (WPT) system against dual-side capacitance drift based on equivalent impedance decoupling (EID). In the proposed method, the imaginary part of the primary and secondary impedance caused by capacitance drift can be decoupled and compensated directly so that the system …
Highly transparent PZT capacitors on glass obtained by layer transfer …
Transparent ITO/PZT/ITO capacitors were fabricated on 200 mm glass substrate. The PZT films of 1 µm and 2 µm thickness were first grown on platinized Si wafer by sol–gel method, and then transferred onto glass substrate together with ITO electrodes following an innovative process. The obtained PZT based stacks on glass show an …
A Self-Tuning Method for Performance Enhancement of Wireless …
The performance of wireless power transfer (WPT) system is dependent on resonance between coil inductor and compensation capacitor. However, temperature variation or aging would lead to capacitance drift of the compensation capacitor. This factor causes detuning of the WPT system which affects power transfer performance. In order to solve the …
The RLC Circuit. Transient Response Series RLC circuit
Transient Response Series RLC circuit
Wireless charging technologies for electric vehicles: Inductive, capacitive…
Wireless charging technologies for electric vehicles: Inductive ...
The volumetric thermal capacitor method for nonlinear heat transfer …
The Volumetric Thermal Capacitor method is developed to solve the non-linear heat diffusion equation with the enthalpy function. The alternative method applies the integration by parts rule to divide the enthalpy term into three components. ... In this work, the authors analyzed the heat transfer in a gap between two coaxial vertical isothermal ...
capacitive wireless power transfer
Capacitive power transfer (CPT) has been investigated in recent years, as an alternative near-field power transfer method to well-known magnetic-field-based approaches [1, 4, 6]. One of the more attractive advantages of capacitive-based WPT is the avoidance of ...
Multiband Adaptive Impedance Compensation Methods for Spatially Robust Capacitive Power Transfer …
This study aims to compare the merits of using both adaptive load resistance and adaptive frequency for impedance compensation in capacitive power transfer (CPT) systems. An adaptive load and frequency-band-switching compensation method is presented that achieves spatial robustness in a CPT system. The method …
Sensors | Free Full-Text | Wireless Power Transfer: Systems, …
Wireless power transfer provides a most convenient solution to charge devices remotely and without contacts. R&D has advanced the capabilities, variety, and maturity of solutions greatly in recent years. This survey provides a comprehensive overview of the state of the art on different technological concepts, including electromagnetic …
A Two-Stage Parameter Optimization Method for Capacitive Power Transfer …
Wireless power transfer (WPT) is more convenient and safer than conductive charging for power consumer electronics, biomedical devices, transportation systems, etc. Inductive power transfer is the most widely studied and commercialized WPT technique; however, capacitive power transfer (CPT) is becoming an attractive alternative, offering better …
The Ultimate Capacitors Guide: Learn How To Use Them
This is your ultimate guide on Capacitors. What they are, how they work, and how to use them in electronics. The best useful equations as well. This way, we can use k as the relative permittivity of our dielectric material times the permittivity of …
Compensation Capacitor Tuning Method of LCC-S Topology …
Abstract: In this paper, a compensation capacitor tuning method is proposed to implement ZVS (Zero Voltage Switching) in the LCC-S topology wireless power transfer (WPT) system with various operating conditions. ZVS must always be realized to ensure stability and reduction of the inverter loss, which is a necessary circuit in the WPT system. As a …
Excitation system by contactless power transfer system with the …
For power transfer to the rotor circuit of excitation-type synchronous motors, we propose a contactless power transfer system with a primary series capacitor (S topology) to …
Capacitive power transfer through virtual self …
Based on this idea, a novel mid-range CPT system with a single coupling capacitor is proposed with the return route replaced by …
Calculating RC Low-Pass Filter Cut-Off Frequency and Transfer …
Calculating RC Low-Pass Filter Cut-Off Frequency and ...
Defining the mutual coupling of capacitive power …
According to (), when C 2 is zero, i.e. there is no cross-coupling between the primary and secondary plates, k E equals 1, indicating that only the main capacitances exist between the primary and secondary …
Capacitive power transfer through virtual self-capacitance route
2.3 Equivalent circuit model With the consideration of the virtual capacitive return route and the self-capacitances of the two coupling plates, the detailed circuit model for the two-plate structure CPT is depicted in Fig. 3a, where C 1, C 2 and C x are the capacitances of the Tx, Rx and coupling capacitors, respectively. ...
Capacitive Voltage Divider as an AC Voltage Divider
Consider the two capacitors, C1 and C2 connected in series across an alternating supply of 10 volts. As the two capacitors are in series, the charge Q on them is the same, but the voltage across them will be different and related to their capacitance values, as V = Q/C. ...
A Critical Review of Compensation Converters for Capacitive Power Transfer …
In the present world, capacitive power transfer is expressed as the best alternative for wireless power transfer in EVs because it has various leverage over inductive charging [30]. It''s been more motivated due to the fact i.e., is elimination of ferrite core and coils have been replaced by the plates which eventually reduces the cost of materials …