Electromagnetic energy harvesting extracts from magnetic fields and can provide power to sensors, monitoring nodes, cyber-physical systems control elements without additional battery external source wiring. This article presents a novel ac-driven electromagnetic harvester based on periodically saturating, cascaded magnetics, consisting of clampable core an ungapped high permeability core. The guarantees the maximum extraction, whereas enables nonintrusive installation for more pervasive...

In this article, a novel Z-source dc circuit breaker topology with Q-shaped impedance network (Q-Z-source breaker) is presented. The new has better performance and more resilient properties than those of the recently published O-Z-source breaker. Q-Z provides bidirectional protection but only requires one semiconductor switch in its current path during normal operation, leading to simpler smaller physical structure lower conduction penalty. It also drastically improves sensitivity issue on...

Magnetic Energy Harvesting (MEH) leverages magnetic fields produced by AC current-carrying wires to harvest energy. This type of energy harvesting produces a relatively high volumetric density compared other ambient methods, suitable for self-powering low-power devices like embedded systems, sensor nodes, Internet-of-Things (IoT), and cyber-physical systems (CPS). Previous research works showed that the core should operate in an appropriately saturated state maximal harvesting. saturation is...

Energy harvesting technologies proliferate self-powered autonomous devices via presenting a higher degree of freedom for sensors and control elements. Among all types energy harvesting, electromagnetic provides relatively denser features high predictability in an amount extraction seamless accessibility consumption measurement. This paper illustrates electromag-netic harvester, which consists clampable magnetic core tandem with ungapped permeability that extracts from fields induced by AC...

With the application of high frequency power electronic devices, planar transformer has been widely used in low voltage and current module supplies. Under working conditions, due to existence effects such as skin proximity effect, winding losses increase take a huge part total loss transformer. And conventional one-dimensional model, which is currently for calculation flat rectangular losses, leads considerable error ignorance edge effect. Based on mechanism electromagnetic theory AC this...

Timing skew between measurement channels can introduce an unacceptable error in power loss and is difficult to quantify, rendering precise in-situ of magnetic essentially unattainable. This article rams the issue head-on by presenting mathematical model for timing developing two methods based on realize direct measurement. The first established analyze effects measured a dc-dc converter. method, called intersection illustrates how unravel entangled relationship actual real circuit with aid...

Matching networks are important for capacitive wireless power transfer (CWPT) systems as they provide necessary voltage gain and impedance compensation. The voltages across coupling capacitors greatly affect the transmitted efficiency. This paper introduces a method to design double-sided LC matching CWPT system. ratio of primary side secondary is discussed realize required optimize efficiency networks. requirement zero-voltage switching (ZVS) inverter stage satisfied based on analysis...

Magnetic loss often tops the power converter's breakdown chart. The optimization of a magnetic component is, therefore, crucial in developing an efficient converter. However, it is difficult to verify design components <bold xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><i>in situ</i></b> , while they operate desired condition. accurate, direct measurement severely hindered by uncertain timing skew between channels. This unknown could introduce...

This paper compares the efficiency of DC/DC Boost converter using SiC fly-wheel diode or synchronous rectifier in different working modes. Analyze high current spike during turn-on transient main switch based on simulation. The method to realize soft without additional devices is discussed and problems existing this can be solved by application new device effectively.

Timing skew between measurement channels can introduce a significant error in direct power loss measurements when both the voltage and current waveforms incorporate AC components. This unknown timing hinders application of two-winding method for magnetic core measurement, introducing challenges attempting to verify performance components under desired operating conditions. paper presents novel approach in-situ an inductor rectangular excitation, eliminating caused by method. Mathematical...

Timing skew between measurement channels can introduce an unacceptable error in power loss measurement, making in-situ magnetic one of the most difficult engineering problems. This paper develops a mathematical model and provides two novel methods to realize insitu direct measurement. The is first established study effects timing on measured/observed DC-DC converter. method, called Intersection proposed analyzed detail. method will illustrate how actual circuit be obtained with aid model....

Designing a good magnetic component is essential for achieving high efficiency in power converters. However, validating such design difficult, especially when the converter operates desired condition. Accurate direct in-situ loss measurement has been known as unattainable due to an unknown timing skew between channels. The unavoidable skew, arising from various reasons, can introduce highly excessive errors, rendering unfit be used reality. This article proposes novel method eliminate errors...

This paper introduces a neutral-point-less, H-type 3-level dual inverter (NPL.H) topology for motor drive applications. multi-level craftily eliminates the neutral clamp and point current altogether, resulting in drastically lower minimum DC-link capacitance, compared to conventional topologies, while retaining benefits. NPL.H has additional merits, including output harmonics, stress, capacitor ripple, etc. The is optimal balanced 6-phase, 3-phase, or 3-phase open-end winding motors....

In general, a capacitive wireless power transfer (CWPT) system utilizes electric fields to effectively power. Designing poses significant challenges due the variable coupling capacitance resulting from physical misalignment of capacitor's plates. To ensure optimal performance, resonant compensation networks are employed enable CWPT operate under conditions. this paper, with an LC circuit on transmitter side and LCLC receiver implemented in system. With specific resonance design networks,...

The positioning accuracy of the PCB during processing depends on quality MARK point images. collection images is affected by factors such as background, illumination etc., so classification key to improve positioning. In this paper, a multidisciplinary design modelling method for product proposed. A model through transfer learning based ResNet50 network and weights built. It verified set customized experiment data that image has reached 98.53%. Compared with traditional methods, rate 20%...