The IPT method has been found to provide a total harmonic distortion of 20–40 dB less than that observed with triac-controlled lights. In addition, the efficiency for the IPT system is 30% better at light load and 10% better at full load when compared with the triac-control system.
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Inductive or magnetic coupling between two coils is the basic principle that is described for wireless power transfer and communication below (see Fig. 1).The equivalent circuit for such systems is illustrated in Fig. 2, including source, load, primary and secondary coils and matching networks for the primary and secondary sides.The matching networks are either
2 INDUCTIVE POWER TRANSFER SYSTEMS. IPT is a robust technology that wirelessly transmits power through the air using magnetic fields generated by inductive coupling coils. Power transfer efficiency. Inductive charging systems for electric vehicles often encounter energy losses during the charging process, primarily due to factors such as
In this article, we investigated the efficiency of a magnetic resonant wireless power transfer (MR-WPT) in conducting medium and found out an optimal frequency for designing the system. In
Inductive power transfer is safe, convenient and can be integrated in a non-obstructing way with very low need for maintenance. Concerns on system efficiency and power transfer of inductive power transfer hinders the further development and deployment of the technology.
To design simple and efficient inductive power transfer (IPT) systems, a minimum number of conversion stages and an effective maximum efficiency tracking (MET) are the primary design criteria. The MET control uses a fast mutual inductance estimation (MIE) algorithm to achieve fast tracking of the maximum efficiency point, especially when the
Wireless Power Transfer (WPT) systems involve inductive power transfer, which is an essential concept. As an electrical and electronics engineer, you might be familiar with this topic. Inductive power transfer allows the wireless transmission of energy using two coils. High-efficiency mid-range inductive power transfer employing alternative
This book presents a system-level analysis of inductive wireless power transfer (WPT) links. The basic requirements, design parameters, and utility of key building blocks used in inductive WPT links are presented, followed by detailed theoretical analysis, design, and optimization procedure, while considering practical aspects for various application domains.
Inductive power transfer (IPT) converters are resonant converters that attain optimal energy efficiencies for a certain load range. To achieve maximum efficiency, it is common to cascade the IPT converter with front-side and load-side dc/dc converters. The two dc/dc converters are normally controlled cooperatively for the requirements of output regulation and maximum
HUANG et al.: CONTROL DESIGN FOR OPTIMIZING EFFICIENCY IN INDUCTIVE POWER TRANSFER SYSTEMS 4525 Fig. 2. SSIPT converter cascaded with a front-side converter and a load-side converter. TABLE I COMPARISON OF DIFFERENT CONTROL SCHEMES The steady-state operation of the converter system is stud-ied in this section. Small-signal analysis will be
To achieve long distances, in the range of meters, far-field is preferred because the beam can be pointed toward the Rx. This beam-based WPT system can transfer large power (kilowatts) at large distances (tens of meters) with high efficiency (>50%) at the risk of interference with other radio signals [].However, for short distances (tens of centimeters),
In this paper, an analysis into the wireless power transfer system using inductive coupling with multiple transmitters and single receiver is presented. It is proved that, with certain total amount of input power from all of the transmitters, there is a maximal output power that can be delivered to the receiver. To achieve this optimal result, the electrical currents in all the transmitters
This paper aims to design and simulate a Wireless Power Transfer charger that can achieve fast charging, thereby improving the EV users'' experience and bypassing the disadvantages of Level 1 and 2 chargers. We attend to this objective by presenting a Two-Stage Inductive Power Transfer system controlled by the constant power (CP) control strategy.
The power transfer efficiency is about 80% at a distance of a few centimetres by using the core–shell. In the underwater condition, the UIWPT system should take care of the eddy current loss which is generated by the
These already available solutions offer high-power transfer capabilities with efficiency values comparable to plug-in chargers. Despite these advancements, there are still many challenges that need to be addressed, especially in dynamic IPT applications. Modular-based inductive power transfer system for high-power applications. IET Power
The power transfer efficiency (PTE) is a crucial aspect for effective wireless power transfer (WPT) applications. The quality factor (Q) of the WPT coil plays a critical role in ensuring higher PTE.
Abstract: Efficiency of wireless power transfer systems, based on inductive power transfer (IPT) technology, suffers significantly due to coil misalignment and load variations. Although numerous control strategies have been proposed in the past to improve the efficiency under these conditions, a technique that utilizes all freedoms of control simultaneously to maximize
The power transfer efficiency is about 80% at a distance of a few centimetres by using the core–shell. In the underwater condition, the UIWPT system should take care of the eddy current loss which is generated by the conductive water. The inductive wireless power transfer system could transfer power by using magnetic fields and the
In a typical high-power inductive wireless power transfer (WPT) system, AC signal, which drives the coupled resonant inductors (couplers), is produced by a half- or full-bridge inverter. However, the output voltage of an inverter is not a pure sinusoidal but a square wave with quite a few harmonics.
Over the course of several decades, the CPT system has undergone significant advancements in transfer power, system efficiency, and transfer distance. Currently, the Capacitive Power Transfer (CPT) system has the capability to fulfill certain charging requirements for numerous WPT applications. 55
Even so, inductive power transfer is not very efficient. There should be a 20 to 100 cm distance between the transmitter and receiver coils (Chowdhury, 2021). In the WPT, eddy current loss can also be a problem if the transmitter coil is not switched off.
The review suggests that the use of the maximum energy efficiency principle in the two-coil systems is suitable for short-range rather than mid-range applications, the use of the maximum power
For inductive power transfer (IPT) systems, loads and system input voltages are subject to change, which affects system efficiency and stability. This article presents a perturbation and observation (P&O) method for maximum energy efficiency tracking (MEET) with a model predictive control (MPC) scheme for improving the dynamic performance of series–series
ends with detailed derivations of the system coupling efficiency, which is the most important portion of the system efficiency analysis for both series- and parallel-tuned secondary side. Keywords: Compensation, Coupling efficiency, Inductive power transfer, Magnetic coupling, Power transfer capability, Resonant converters, Wireless power transfer
Along with the technology boom regarding electric vehicles such as lithium-ion batteries, electric motors, and plug-in charging systems, inductive power transfer (IPT) systems have gained more attention from academia and
Design for High-Efficiency Inductive Power Transfer Systems Cong Zheng ABSTRACT Transfer signal without wire has been widely accepted after the introduction of cellular technology and WiFi technology, hence the power cable is the last wire that has yet
Lee, S. et al., High efficiency wireless power transfer system using a two-stack hybrid metamaterial slab. 2019 IEEE Wireless Power Transfer Conference (WPTC), pp. 616–619, (2019).
As seen from Table 2, only the efficiency provided by Li et al. [ 8] is higher than the proposed system due to its shorter transfer distance and higher-transferred power. Table 2. Comparisons between previous literature and this paper The maximum transferred power and maximum power transfer efficiency are conflictive.
The objective of this chapter is to study the fundamentals and operating principles of inductively coupled wireless power transfer (ICWPT) systems. This new technology can be used in various wireless power transfer applications with different specifications, necessities, and restrictions such as in electric vehicles and consumer electronics. A typical
Inductive charging pad for a smartphone as an example of near-field wireless transfer. When the phone is set on the pad, a coil in the pad creates a magnetic field [1] which induces a current in another coil, in the phone, charging its
The paper also discusses compensation networks'' role in inductive power transfer systems, delving into the advancements made in compensation networks that enhance coil utilization and efficiency. Brown''s lab experiment achieved a power transfer efficiency of 54 %, with the major power loss occurring during the DC microwave conversion stages
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