Combination of class E inverters with DC-DC converters for a circuit design with controllable dual outputs

Huang, Shyh-Jier; Hung, Te-Chun; Liu, Shih-Yu

doi:10.1109/icit.2015.7125221

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…air/ skin/ paper/ etc. Building CPT system by using class E inverter is, at the moment, the most reliable method for higher frequency applications [13][14][15]. On top of that, this type of inverter is also used because of its simple topology and the ability to achieve very high efficiency in return.…”

Section: Introductionmentioning

confidence: 99%

Efficiency comparison of capacitive wireless power transfer for different materials

Rahman

Saat

Yusop

et al. 2020

IJPEDS

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<p>This paper describes the application of several types of materials to act as capacitive plates in a Capacitive Power Transfer (CPT) system. In general, the efficiency of CPT system is greatly influenced by the coupling capacitance which is varied by distances and permittivity values. Thus this paper intended to compare the performance of CPT system in terms of the output efficiency for several types of capacitive plates. To be specific, copper plate, zinc, and aluminium are used in this work to act as coupling plates to the CPT system. The CPT system in this work applied class E inverter as it has lowest switching losses among its competitors, i.e. class D and class F. The work is validated through experimental setup of CPT system in which copper material provides the best efficiency of the system.</p>

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Section: Introductionmentioning

confidence: 99%

Efficiency comparison of capacitive wireless power transfer for different materials

Rahman

Saat

Yusop

et al. 2020

IJPEDS

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show abstract

“…The major drawback of Class-E converters, is the high Q-factor required at resonant frequency, and the high voltage and current stress the switch experiences under normal operation [3], [4]. This has made wide implementation of this circuit limited, due to the high surge current requirements for the switch.…”

Section: Introductionmentioning

confidence: 99%

A 500 kHz Silicon Carbide (SiC) Single Switch Class-E Inverter

Saadeh¹,

Dalalah²,

Zghoul³

et al. 2018

IJEETC

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Increased demand for intelligence in high performance applications such as home appliance, transportation, renewable energy systems, medical equipment and utilities interfaces, while managing cost, efficiency and volume is a challenge for inverter topologies. In addition, increased efficiency and optimal operation require complex control schemes, which require a large processing budget and expensive sensors. Advances in power semiconductor technology has revolutionized the industry, where signal processing methods and analog electronic topologies are being employed to process power. A Class-E inverter is a topology borrowed from amplifiers for DC to AC conversion. Class-E inverters promise an upgrade solution, where a single switch may be used for full wave inversion. Using this resonant topology promises to mitigate the need for complex control schemes, as only one switch must be controlled. Previous attempts at building Class-E converters, have been limited to smaller power ratings, as the switch experience's high voltage and current stress. SiC power semiconductor devices have been commercially available for the past few years, and offer several key advantages such as: faster switching speeds, higher voltage and current surge withstand capabilities, smaller overall system footprint and simpler cooling systems. This paper describes a 500 kHz Silicon Carbide (SiC) Class-E Inverter.  Index Terms-class-E inverter, DC-AC conversion, high frequency power electronics, single switch, resonant inverter, silicon carbide

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“…As proved and explained in previous sections, the aluminium sheets' size for the CPT system is getting smaller by the existence of an impedance matching network, as shown in Figure 12. This is due to the recalculation of components values by using equations (8)(9)(10)(11)(12)(13)(14)(15) and by adding an extra capacitor as impedance matching, the desired output is achieved and maintained with smaller size of capacitive plates. The value of the capacitive coupling is initially 0.21m x 0.24m, which is equal to 4.07nF.…”

Section: Aluminium Sheets As Capacitive Couplingsmentioning

confidence: 99%

“…Building CPT system by using class E inverter is, at the moment, the most reliable method for higher frequency [12], [13], [14]. Moreover, this type of inverter is also used since it has simple topology and a very high efficiency achieved in return because one of the characteristics of class E is that it is able to achieve 100% switching condition known as Zero-Voltage Switching (ZVS).…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Capacitive Power Transfer System with and without the Impedance Matching Circuit

Rahman¹,

Saat²,

Yusop³

et al. 2017

IJPEDS

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This paper presents the design and analysis of a relatively new wireless power transfer technique using capacitive coupling, named Capacitive power transfer (CPT). In general, CPT system has been introduced as an attractive alternative to the former inductive coupling method. This is because CPT uses lesser number of components, simpler topology, enhanced EMI performance and better strength to surrounding metallic elements. In this work, aluminium sheet is used as a capacitive coupling at transmitter and receiver side. Moreover, a Class-E resonant inverter together with π1a impedance matching network has been proposed because of its ability to perform the dc-to-ac inversion well. It helps the CPT system to achieve maximum power transfer. The CPT system is designed and simulated by using MATLAB/Simulink software. The validity of the proposed concept is then verified by conducting a laboratory experimental of CPT system. The proposed system able to generate a 9.5W output power through a combined interface capacitance of 2.44nF, at an operating frequency of 1MHz, with 95.10% efficiency. The proposed CPT system with impedance matching network also allows load variation in the range of 20% from its nominal value while maintaining the efficiency over 90%. Keyword:Aluminum sheet Capacitive power transfer MATLAB simulink Wireless power transfer impedance matching

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Combination of class E inverters with DC-DC converters for a circuit design with controllable dual outputs

Cited by 4 publications

References 15 publications

Efficiency comparison of capacitive wireless power transfer for different materials

Efficiency comparison of capacitive wireless power transfer for different materials

A 500 kHz Silicon Carbide (SiC) Single Switch Class-E Inverter

Design and Analysis of Capacitive Power Transfer System with and without the Impedance Matching Circuit

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