An Analytical Approach for the Design of Class-E Resonant DC–DC Converters

Bertoni, Nicola; Frattini, Giovanni; Massolini, Roberto; Pareschi, Fabio; Rovatti, Riccardo; Setti, Gianluca

doi:10.1109/tpel.2016.2535387

Cited by 44 publications

(49 citation statements)

References 29 publications

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“…1 belonging to a class-E topology, introduced in the early '80s [13], [14] to improve efficiency at high working frequencies thanks to the zero-voltage switching (ZVS) approach. For the design, we refer to the innovative approach first proposed in [9] and refined in [10], and based on the direct solution of the differential equations describing the evolution of the converter. This allows a more accurate implementation and a simpler architecture by reducing the number of passive components required with respect to other approaches typically based on strongly simplifying assumptions.…”

Section: Class-e Converter Design At Nominal Load and Nominal Kmentioning

confidence: 99%

A Wireless Power Transfer System for Biomedical Implants based on an isolated Class-E DC-DC Converter with Power Regulation Capability

Celentano

Pareschi

Valente

et al. 2020

2020 IEEE 63rd International Midwest Symposium on Circuits and Systems (MWSCAS)

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In this paper, the design of a wireless power transfer system (WPT) targeting biomedical implants is considered. The novelty of the approach is to propose a co-design of the transmitter and receiver side based on the design of class-E isolated DC-DC converters. The solution, along with the simple introduction of a shunt regulator at the receiver, allows us to solve the problem of ensuring optimal efficiency in the WPT link. In conventional solutions, in order to cope with coupling factor and load variations, information from the receiver is needed, which is usually relayed back onto the transmitter by means of telemetry. With the proposed approach, a very simple minimum power point tracking (mPPT) algorithm can be used to maximize the WPT efficiency based on the information already available at the transmitter side. This reduces the complexity of the circuitry of the implant and thereby its power overhead and possibly its size, both being crucial constraints of a biomedical implant.

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Section: Class-e Converter Design At Nominal Load and Nominal Kmentioning

confidence: 99%

A Wireless Power Transfer System for Biomedical Implants based on an isolated Class-E DC-DC Converter with Power Regulation Capability

Celentano

Pareschi

Valente

et al. 2020

2020 IEEE 63rd International Midwest Symposium on Circuits and Systems (MWSCAS)

Self Cite

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“…Usually, when analyzing power electronics systems, we divide the system into a series of operation modes according to the on/off state of the controlled and non-controlled switches and study the modes one by one [30,31]. Accordingly, the Buck-inverter system shown in Figure 1 can be piecewise linearized into six possible working modes because the Buck converter works in continuous current mode (CCM) and discontinuous current mode (DCM): The equivalent circuits of these six working modes are shown in Figure 2a-f respectively.…”

Section: State-flow Chart Of Buck-inverter Systemmentioning

confidence: 99%

Bifurcation Phenomena Studies of a Voltage Controlled Buck-Inverter Cascade System

Tang

Dai

et al. 2017

Energies

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This paper studies the complex bifurcation phenomena of a voltage-controlled Buck-inverter cascade system. A state-flow chart is drawn to illustrate the complex relations among the linear operating modes. Combined with the state transition function of each mode, the time response of the system can be obtained. For period-one steady state, the periodic mapping function and its fixed point are further derived, on the basis of which the Jacobi matrix is developed and its maximum eigenvalue is analyzed to understand the bifurcation diagram. By globally analyzing the state space using this cell mapping method, the coexistence of attractors is revealed in the Buck-inverter system. All theoretical results have been verified experimentally on a prototype system. The results obtained can be used for guiding the design and analysis of the Buck-inverter system. The analyzing method can be helpful for studying other power electronics systems with compound topologies.

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“…P SWD " 1 2 Q rr pV out´Vin´Iin DCRq f sw (27) Energies 2016, 9, 509 8 of 35 3.1.3. Inductor Losses P CORE , P DCR and P ACR can be calculated as:…”

Section: Mosfet Lossesmentioning

confidence: 99%

Implementation of Rapid Prototyping Tools for Power Loss and Cost Minimization of DC-DC Converters

Kulkarni¹,

Chen²,

Bazzi³

2016

Energies

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In this paper, power loss and cost models of power electronic converters based on converter ratings and datasheet information are presented. These models aid in creating rapid prototypes which facilitate the component selection process. Through rapid prototyping, users can estimate power loss and cost which are essential in design decisions. The proposed approach treats main power electronic components of a converter as building blocks that can be arranged to obtain multiple topologies to facilitate rapid prototyping. In order to get system-level power loss and cost models, two processes are implemented. The first process automatically provides minimum power loss or cost estimates and identifies components for specific applications and ratings; the second process estimates power losses and costs of each component of interest as well as the whole system. Two examples are used to illustrate the proposed approaches-boost and buck converters in continuous conduction mode. Achieved cost and loss estimates are over 93% accurate when compared to measured losses and real cost data. This research presents derivations of the proposed models, experimental validation of the models and demonstration of a user friendly interface that integrates all the models. Tools presented in this paper are expected to be very useful for practicing engineers, designers, and researchers, and are flexible and adaptable with changing or new technologies and varying component prices.

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An Analytical Approach for the Design of Class-E Resonant DC–DC Converters

Cited by 44 publications

References 29 publications

A Wireless Power Transfer System for Biomedical Implants based on an isolated Class-E DC-DC Converter with Power Regulation Capability

A Wireless Power Transfer System for Biomedical Implants based on an isolated Class-E DC-DC Converter with Power Regulation Capability

Bifurcation Phenomena Studies of a Voltage Controlled Buck-Inverter Cascade System

Implementation of Rapid Prototyping Tools for Power Loss and Cost Minimization of DC-DC Converters

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