Inductive power transfer (IPT) allows power transfer over an air gap without physical contact between the primary and secondary side. This is attractive for applications such as ultraclean environments and biomedical implants. It is also an approach for the charging of electric vehicles.
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This chapter presents the basic theories and fundamental principles of the inductive power transfer (IPT), where no distinction between the definition of IPT and that of magnetic resonant coupling (MRC) is made. From the perspective of the quantity for pickups, the IPT system is divided into 1-to-1 transmission and 1-to-n transmission.
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 coupled and uncoupled
This article classifies, describes, and critically compares different compensation schemes, converter topologies, control methods, and coil structures of wireless power transfer systems for electric vehicle battery charging, focusing on inductive power transfer. It outlines a path from the conception of the technology to the modern and cutting edge of the technology.
This chapter presents the basic theories and fundamental principles of the inductive power transfer (IPT), where no distinction between the definition of IPT and that of magnetic resonant
Abstract: Coupling variation tolerance is one of the most crucial abilities of the inductive power transfer (IPT) system because the variable coupling can dramatically degrade the output power. This letter proposes a clamp circuit-based IPT system with a reconfigurable rectifier featuring high antimisalignment. The clamp circuit can adaptively switch from one stable
The challenges are significant but the technology is promising. Inductive power transfer (IPT) was an engineering curiosity less than 30 years ago, but, at that time, it has grown to be an important technology in a variety of applications.
Inductive power transfer (IPT) was an engineering curiosity less than 30 years ago, but, at that time, it has grown to be an important technology in a variety of applications. The paper looks at the background to IPT and how its development was based on sound engineering principles leading on to factory automation and growing to a $1 billion industry in the process.
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
To realize high-power inductive power transfer (IPT) for fast charging of electric vehicles (EVs), an input-series output-parallel (ISOP) multi-channel IPT system is analysed in this paper, and an output control strategy based on single neuron controller is proposed to improve the stability of the system.
There are two types of WPT technologies that are widely used in EV systems, namely inductive power transfer (IPT) and capacitive power transfer (CPT) [7,8]. While IPT uses coupled coils to transfer the power by a
Power transfer by WPT systems can be influenced by the quality factor (Q) B. & Mihet-Popa, L. Inductive wireless power transfer charging for electric vehicles—A review. IEEE Access 9, 137667
With the expansion of mid-voltage DC distribution, inductive power transfer (IPT) systems supplied directly by DC distribution with a high input voltage become a possibility. A high input voltage leads to an enhanced power transfer level and low losses with the DC bus under a certain power transmission. However, the ultra-high input voltage of single-channel
Abstract: Typical inductive power transfer (IPT) systems employ two power conversion stages to generate a high-frequency primary current from low-frequency utility supply. This paper proposes a matrix-converter-based IPT system, which employs high-speed SiC devices to facilitate the generation of high-frequency current through a single power conversion stage.
Inductive Power Transfer-Floor systems with primary track cables embedded in the floor or other surface, and used with flat F-Pickups. Used primarily with surface running vehicles. The Wireless Charger 3.0 is a contactless, inductive coupling system which provides automated,
Fig. 1. A block diagram of an inductive power transfer system. The DC power source outputs high-frequency AC power through the inverter module. The AC power supply is connected to the transmission coil through a compensation network, increasing the transmission voltage at the transmission coil, thereby improving energy transmission efficiency.
This article classifies, describes, and critically compares different compensation schemes, converter topologies, control methods, and coil structures of wireless power transfer systems for electric vehicle battery
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 battery. Generic block diagram of a wireless power system
Wireless charging has become increasingly popular in low and medium-power applications, such as motor-driven carriers, unmanned aerial vehicles, electric bicycles, and inspection robots. Nevertheless, pad misalignment can significantly affect the system performance, leading to higher losses and a reduction in the power output. Particularly in the
The inductively coupled power transfer (ICPT) method is known worldwide for its high power transfer in many applications, mainly in electric vehicles [5,31]. It provides a rapid charging process, and optimized power transmission by frequency variation and control over the loss due to low magnetic coupling.
The double-sided LCC topology provides an efficient compensation method for electric vehicle (EV) wireless charging systems. However, the existence of two compensation coils results in an electric vehicle wireless charging device with a large volume, high power consumption, and low efficiency. To solve these problems, this paper proposes a wireless
Abstract: This chapter presents the basic theories and fundamental principles of the inductive power transfer (IPT), where no distinction between the definition of IPT and that of magnetic resonant coupling (MRC) is made. From the perspective of the quantity for pickups, the IPT system is divided into 1‐to‐1 transmission and 1‐to‐n transmission.
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. It finds applications in diverse fields, including biomedical device, consumer electronics
Constant current (CC) and constant voltage (CV) outputs are important in the inductive power transfer (IPT) system for battery charging. However, the coupling changes caused by the misalignment between the primary and secondary coils significantly affect the system performance. To address this issue, this paper proposes a parameter design method based on
This paper examines an inductive power transfer (IPT) system with a rotary transformer as an alternative solution to slip ring systems for a contactless energy transfer to rotating equipment. A prototype system is set up, consisting of a rotating ball bearing shaft and an exemplary sensor circuit mounted on the shaft. Three possible transformer configurations are
1 INTRODUCTION. Wireless power transfer is the method that could deliver power without physical contact [1-5].Several methods of wireless power transfer have been introduced including near-field wireless power transfer [6-9] such as inductive coupling through magnetic fields [10-18], capacitive coupling through electric fields [19-28], and far-field
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. Additionally, the paper presents various magnetic coupler designs and their optimization to improve overall magnetic coupling efficiency, pulsations
Wireless power transfer (WPT) systems, which have been around for decades, have recently become very popular with the widespread use of electric vehicles (EVs). In this study, an inductive coupling WPT system with a series–series compensation topology was designed and implemented for use in EVs. Initially, a 3D Maxwell (ANSYS Electromagnetics
In this paper, a WET technique using inductive power transfer system is designed. A power inverter feeds the primary circuit with high-frequency signals ranging from 20 to 150 kHz which is generated using the inverter pulse triggering circuit. The primary circuit is in series resonance so that maximum amount of current can pass through the
Inductive power transfer (IPT) uses a magnetic field to transfer electrical energy from a TX to RX sides without an electrical connection. You might find these chapters and articles relevant to this topic. Inductive power transfer (IPT) allows power transfer over an air gap without physical contact between the primary and secondary side.
The inductive power transfer offers low efficiency when the air gap is increased between charging coils and also involves wired chargers, while the designs for full wireless charging systems have been developed to overcome the deficiencies of IPT and make the charging system convenient for the users.
In order to obtain greater power transfer, an IPT–CPT hybrid system was proposed in this article. 67 High voltage stress on the coupling coils caused by the current passing through them limits the IPT system''s ability to transfer power in high-power applications. High voltages are needed to create the electric field necessary for power
Author to whom correspondence should be addressed. Inductive power transfer (IPT) has been widely adopted as an efficient and convenient charging manner for both static and in-motion EVs. In this paper, a new hybrid topology is presented to improve the coupling tolerance under pad misalignment.
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),
An online steady-state load identification method is proposed to solve the problems related to frequency drift, system robustness deterioration, difficulties in controller design due to the uncertainties in load and mutual inductance variations of an inductive power transfer (IPT) system. Take a Series-Series-type IPT system as an example, an additional
Inductive power transfer (IPT) technology is a well-recognized technique for supplying power to a wide range of applications with no physical contacts. With the emergence of applications such as electric vehicles and vehicle-to-grid systems, IPT systems with bidirectional power flow have become a recent focus. In contrast to simple unidirectional IPT systems,
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