Comparative evaluation of S-S and P-S topologies for wireless charging of electrical vehicles

Ravikiran, Vaka; Keshri, Ritesh Kumar

doi:10.1109/iecon.2017.8216922

Cited by 19 publications

(3 citation statements)

References 14 publications

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“…Identical primary and secondary coils with identical compensation capacitors are chosen to obtain the simplest analytical design. Frequency bifurcation is a phenomenon studied in [21][22][23][24] and results from having symmetrical primary to secondary systems. A fixed voltage gain can be obtained at a specific frequency in S-S compensation, as shown in [24].…”

Section: Electrical Equations Of the Symmetrical Series Compensation ...mentioning

confidence: 99%

A Control Strategy to Avoid Drop and Inrush Currents during Transient Phases in a Multi-Transmitters DIPT System

et al. 2022

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Electrical Vehicles (EVs) have gained popularity in recent years in the automotive field. They are seen as a way to reduce the CO2 footprint of vehicles. Although EVs have witnessed significant advancement in recent years, they still have two major setbacks: limited autonomy and long recharging time. Dynamic Inductive Power Transfer (DIPT) systems permit charging EVs while driving, provide unlimited autonomy, and eliminate stationary charging time and lower battery dependency. Multiple transmitters are required to achieve DIPT; thus, dealing with transient phases is essential because every time a receiver crosses over from one transmitter to another, it experiences a new transient phase. This article presents a novel control strategy for multi-transmitter DIPT systems that ensures a continuous and stable power transfer to a moving EV. The proposed control strategy eliminates drop and inrush currents during transient phases. The control integrates a soft start feature and a degraded operating mode at a predefined maximum current value. The studied structure is a symmetrical series–series compensation network. Each transmitter coil is driven by a variable frequency inverter (around 85 kHz) to ensure Zero Phase Angle mode. The control strategy was numerically validated using MATLAB Simulink and then tested experimentally. Results show a relatively low power disruption after applying the proposed control during transmitter sequencing.

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Section: Electrical Equations Of the Symmetrical Series Compensation ...mentioning

confidence: 99%

A Control Strategy to Avoid Drop and Inrush Currents during Transient Phases in a Multi-Transmitters DIPT System

et al. 2022

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“…As a result, the power factor gets very small and starts to approach zero as the frequency increases leading to higher VA rating with reduced efficiency. In WPT applications, four types of compensation circuit topologies are used (Agcal et al, 2016;Ravikiran and Keshri, 2017;Zavrel and Kindl, 2018). In this study comparisons of different compensation topologies have been investigated for WPT systems.…”

Section: Introductionmentioning

confidence: 99%

Comparison and selection strategy of compensating topologies in two coil resonant wireless power transfer system

Agcal¹,

Özkiliç

Toraman³

2022

JER is an international, peer-reviewed journal that publishes f

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In this study comparisons of different compensation topologies are investigated for two coil resonant wireless power transfer systems. Compensation circuits are examined individually according to system parameters such as efficiency, equivalent impedance, frequency, load resistance, and phase angle. This paper aims to compares the system variables in order to address the constraints in the system applicability regarding the compensation topology selection in Wireless Power Transfer (WPT) systems. Topology selection schemes related to circuit parameters are given. The main motivation of this study is that it presents a suitable topology selection scheme and flow diagram according to applications with various voltages, currents, power and loads. Simulations performed for four main topologies under various load conditions concludes that choosing the proper compensation topology for appropriate load is essential. Simulation studies are carried out with the Simulink software. The results obtained from here are validated with both Matlab calculation codes and C # calculation codes. The analyses according to the frequency in various load conditions have shown that variation of efficiency depends on the compensation topology of the receiver side. Moreover, in this study, it has been revealed that the topology of the transmitter side only affects the equivalent impedance together with the amount of power drawn from the input hence it has no effect on the efficiency and load characteristics. Consequently in the case of working with low load resistance such as an electric vehicle or mobile phone charging, topologies with series compensation on the receiver side can be preferred. Correlatively, topologies with parallel compensation on the receiver side can be evaluated as suitable for high load resistance, low current, and low power operations such as biomedical appliance charging.

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“…A wireless power transfer (WPT) system is typically composed of a transmitter coil, a storage device, a receiver coil, an electric source, controllers, a matching circuit and sensors [5,6]. There are two main types of topologies, referred to as compensation topologies, to interface the WPT coils: series-series (SS) and parallel-series (PS) [7]. To enhance the maximum efficiency of the transfer, for the PS topology, a secondary-side inductor-capacitor-capacitor (LCC) impedance-matching circuit can be used [8,9].…”

Section: Introductionmentioning

confidence: 99%

Novel Electrical Modeling, Design and Comparative Control Techniques for Wireless Electric Vehicle Battery Charging

El-Shahat

Ayisire²

2021

Electronics

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Dynamic wireless power systems are an effective way to supply electric vehicles (EVs) with the required power while moving and to overcome the problems of low mileage and extensive charging times. This paper targets modeling and control for future dynamic wireless charging using magnetic resonance coupling because of the latter’s efficiency. We present a 3D model of transmitter and receiver coils for EV charging with magnetic resonance wireless power developed using ANSYS Maxwell. This model was incorporated into the physical design of the magnetic resonance coupling using ANSYS Simplorer in order to optimize the power. The estimated efficiency was around 92.1%. The transient analysis of the proposed circuit was investigated. A closed-loop three-level cascaded PI controller- was utilized for wireless charging of an EV battery. The controller was designed to eliminate the voltage variation resulting from the variation in the space existing between coils. A single-level PI controller was used to benchmark the proposed system’s performance. Furthermore, solar-powered wireless power transfer with a maximum power point tracker was used to simulate the wireless charging of an electric vehicle. The simulation results indicated that the EV battery could be charged with a regulated power of 12 V and 5 A through wireless power transfer. Fuzzy logic and neuro-fuzzy controllers were employed for more robustness in the performance of the output. The neuro-fuzzy controller showed the best performance in comparison with the other designs. All the proposed systems were checked and validated using the OPAL Real-Time simulator. The stability analysis of the DC–DC converter inside the closed-loop system was investigated.

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Comparative evaluation of S-S and P-S topologies for wireless charging of electrical vehicles

Cited by 19 publications

References 14 publications

A Control Strategy to Avoid Drop and Inrush Currents during Transient Phases in a Multi-Transmitters DIPT System

A Control Strategy to Avoid Drop and Inrush Currents during Transient Phases in a Multi-Transmitters DIPT System

Comparison and selection strategy of compensating topologies in two coil resonant wireless power transfer system

Novel Electrical Modeling, Design and Comparative Control Techniques for Wireless Electric Vehicle Battery Charging

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