Analysis of Battery Reduction for an Improved Opportunistic Wireless-Charged Electric Bus

Yin, Aijun; Wu, Shenchun; Li, Wei-Han; Hu, Jinfang

doi:10.3390/en12152866

Cited by 11 publications

(5 citation statements)

References 36 publications

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“…The double couple method is presented in [164], but it fails because of highfrequency transmission. SWC and DWC are combined in [165], [166] and show promising results but are expected to also feature a high cost. QWC charges the EV when it stops for a short time, like at a traffic light, which combines the advantages of the SWC and DWC and also simplifies the complex implementation of the DWC [167].…”

Section: E Wireless Charging Systemsmentioning

confidence: 99%

A Review of Bidirectional On-Board Chargers for Electric Vehicles

et al. 2021

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The fast development of electric vehicles (EVs) provides significant opportunities to further utilize clean energies in the automotive. On-board chargers (OBCs) are widely used in EVs because of their simple installation and low cost. Limited space in the vehicle and short charging time require an OBC to be power-dense and highly efficient. Moreover, the possibility for EVs to deliver power back to the grid has increased the interest in bidirectional power flow solutions in the automotive market. This paper presents a comprehensive overview and investigation on the state-of-the-art solutions of bidirectional OBCs. It reviews the current status, including architectures and configurations, smart operation modes, industry standards, major components, and commercially available products. A detailed overview of the promising topologies for bidirectional OBCs, including two-stage and single-stage structures, is provided. Future trends and challenges for topologies, wide bandgap technologies, thermal management, system integration, and wireless charging systems are also discussed in this paper.

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Section: E Wireless Charging Systemsmentioning

confidence: 99%

A Review of Bidirectional On-Board Chargers for Electric Vehicles

et al. 2021

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“…In general, there are two typical DWPT structures, i.e., long-track-loop structure and multiple-individual-transmitter structure [10]. The advantage of the long-track-loop type is its simple structure.…”

Section: Introductionmentioning

confidence: 99%

An Improved and Integrated Design of Segmented Dynamic Wireless Power Transfer for Electric Vehicles

Wang

Cheng

2021

Energies

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This paper describes improvements in a segmented dynamic wireless power transfer (DWPT) system for electric vehicles (EVs), and aims to offer a stable charging method for high-power applications. An integrated design is presented, including the modified switching sequence, the size of segmented transmitters, and parallel inverter technology for high-power applications. Three consecutive transmitters mounted on the rail track are energized according to the position of the pickups. This three-consecutive-transmitter group is comprised of a Q-shaped coil, a DD-shaped coil, and a Q-shaped coil again (QDDQ). QDDQ is used as an elementary energized group to optimize the number of energized transmitters and mitigate the output voltage variation. The entire DWPT system is designed with finite element analysis (FEA) and studied with circuit topologies. Overall, an experimental prototype for dynamic charging is built to verify the overall performance, which shows a great agreement with the theoretical analysis. In this prototype, there are five transmitters and one receiver. All dimensions are 500 mm × 500 mm. The proposed system has been validated to realize 500 V constant output voltage with approximately 85% dc-dc efficiency from the 100 Ω to 200 Ω load conditions. A 2.5 kW maximum output power occurs at the 100 Ω load condition.

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“…Additionally, we demonstrate that the dynamic wireless power system is one of the most effective solutions as it can supply energy to the electric vehicle while moving. This system could be utilized underneath roads as fixed power tracks to transfer power wirelessly as the vehicles move on the roads [38][39][40][41][42].…”

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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Analysis of Battery Reduction for an Improved Opportunistic Wireless-Charged Electric Bus

Cited by 11 publications

References 36 publications

A Review of Bidirectional On-Board Chargers for Electric Vehicles

A Review of Bidirectional On-Board Chargers for Electric Vehicles

An Improved and Integrated Design of Segmented Dynamic Wireless Power Transfer for Electric Vehicles

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

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