Wireless power transfer system with reduced voltage stress on compensation capacitors

Špánik, Pavol; Frivaldský, Michal; Piri, Marek; Kindl, Vladimir

doi:10.1109/iecon.2016.7793103

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…The first map will consider a constant load, which will be set as optimal for the working distance corresponding to k = 0.1 [19]. The optimal load for the map was determined based on the relationship:…”

Section: Series-series Compensationmentioning

confidence: 99%

Theoretical and Practical Design Approach of Wireless Power Systems

Kindl¹,

Frivaldský²,

Škorvaga³

et al. 2021

Wireless Power Transfer – Recent Development, Applications and New Perspectives

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The paper introduces the main issues concerned with the conceptual design process of wireless power systems. It analyses the electromagnetic design of the inductive magnetic coupler and proposes the key formulas to optimize its electrical parameters for a particular load. For this purpose, a very detailed analysis is given focusing on the mathematical concept procedure for determination of the key factors influencing proper coupling coils design. It also suggests basic topologies for conceptual design of power electronics and discusses its proper connection to the grid. The proposed design strategy is verified by experimental laboratory measurement including analyses of leakage magnetic field.

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Section: Series-series Compensationmentioning

confidence: 99%

Theoretical and Practical Design Approach of Wireless Power Systems

Kindl¹,

Frivaldský²,

Škorvaga³

et al. 2021

Wireless Power Transfer – Recent Development, Applications and New Perspectives

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“…Comparing (10) to (11), it is easy to find the value of mutual inductance (12) necessary to reach the required charging power for a given battery pack.…”

Section: Of 17mentioning

confidence: 99%

“…When talking about battery charging in the automotive industry, the series-series compensation topology is the best choice [7][8][9]. In that case, the compensation capacitors are stressed [10] with a relatively high voltage (usually several kilovolts) and, therefore, either a series-parallel connection of individual capacitors or bulky high-end capacitors need to be used. However, both options have their pros and cons and are closely related to the thermal stability and consequently to the relative tolerance of component values.…”

Section: Introductionmentioning

confidence: 99%

Generalized Design Approach on Industrial Wireless Chargers

et al. 2020

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The paper briefly discusses the most important standards and regulations established for high-power wireless power transfer systems and introduces the main issues concerned with the conceptual design process. It analyses the electromagnetic design of the inductive magnetic coupler and proposes key formulas to optimize its electrical parameters for a particular load. The method applies to both the resistive load and the battery charging. It also suggests basic topologies for conceptual design of power electronics and discusses its proper connection to the grid. The proposed design strategy is verified by experimental laboratory measurement including analyses of the leakage magnetic field.

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“…The SS compensation is the most practical among them for EV wireless charging application as it offers high tolerance of misalignment and independent from load variation [7]. However, these capacitors suffer from high voltage stress at resonance [8]. An extended compensation topology such as Pi-network or T-network connection is introduced by adding inductor in order to distribute voltage stress between passive elements [9].…”

Section: Introductionmentioning

confidence: 99%

CLL/S Detuned compensation network for electric vehicles wireless charging application

Aziz¹,

Romlie²,

Zulkifli³

2019

IJPEDS

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<span lang="EN-GB">An electric vehicle (EV) can be charged wirelessly through an inductively coupled power transfer system where the system resonates the inductive coupling coil at the operating frequency by means of a compensation network. However, the resonant behaviour implies overcurrent in the inverter MOSFETs during uncoupled and high load resistor conditions, which affect to the inverter MOSFETs failure whenever the current exceeds their maximum current rating. Therefore, this paper presents a CLL/S detuned compensation network for EV wireless charging application to limit the inverter current during the uncoupled state and open circuit load conditions. The proposed compensation consists of a series capacitor and parallel inductor at the primary side and series capacitor at the secondary side. By using Kirchhoff Voltage Law (KVL) analysis, the primary side is detuned to inductive behaviour to ensure zero voltage switching (ZVS), and the secondary side remains at natural resonant tuning. From the simulation analysis, the slight increase of the parallel inductor value at the primary side can limit of the inverter current at uncoupled and high load resistor conditions. The proposed system also offers higher efficiency than the series-series detuned compensation and slightly lower than the double-sided LCC compensation network at different coupling factor.</span>

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Wireless power transfer system with reduced voltage stress on compensation capacitors

Cited by 8 publications

References 11 publications

Theoretical and Practical Design Approach of Wireless Power Systems

Theoretical and Practical Design Approach of Wireless Power Systems

Generalized Design Approach on Industrial Wireless Chargers

CLL/S Detuned compensation network for electric vehicles wireless charging application

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