The challenges that electric vehicles(EVs)must overcome today include the high cost of batteries,poor specific energy,and ineffectiveness in estimating the state of batteries using traditional methods.This article rev...The challenges that electric vehicles(EVs)must overcome today include the high cost of batteries,poor specific energy,and ineffectiveness in estimating the state of batteries using traditional methods.This article reviews(i)current research trends in EV technology according to the Web of Science database,(ii)current states of battery technology in EVs,(iii)advancements in battery technology,(iv)safety concerns with high-energy batteries and their environmental impacts,(v)modern algorithms to evaluate battery state,(vi)wireless charging technology and its practical limitations,(vii)key barriers to battery technology,and(viii)conclusions and recommendations are also provided.This paper examines energy-storage technologies for EVs,including lithium-ion,solid-state,and lithium-air batteries,fuel cells,and ultracapacitors.The core characteristics,advantages,disadvantages,and safety concerns associated with these batteries are discussed.Internet-of-Things(IoT)-based approaches are described to assess the battery state in real-time.Furthermore,for enhanced electric mobility,wireless power transfer charging techniques are discussed.Finally,recent advancements and potential outcomes for future EV technologies are outlined.展开更多
The compensation circuit plays a crucial role in the framework of Capacitive Power Transfer(CPT)in wireless Electric Vehicle(EV)charging schemes.Various wireless charging factors such as power transfer capacity,effici...The compensation circuit plays a crucial role in the framework of Capacitive Power Transfer(CPT)in wireless Electric Vehicle(EV)charging schemes.Various wireless charging factors such as power transfer capacity,efficiency,and frequency depend on the design of compensation circuit topology.In CPT,power is transferred between the two capacitor plates(one transmitter plate embedded on the track and the other plate which is inserted in the wireless EV chassis operates as a receiver).The transmitter plate is excited by a high frequency source and power is transferred between the plates through an electric field.This review paper introduced an experimental prototype of the Corbin Sparrow(CS),featuring an onboard battery charger and an off-board DC charging port.Additionally,it presented a novel conformal bumper-based approach,highlighting its distinct advantages compared to alternative charging methods.The major challenges to employing capacitive technology in transferring power up to kW level are-the greater air gap between the capacitor of vehicle chassis&ground and the high value of electric field strength in the contour of plates.Also,due to the lowvalue of coupling capacitance,there is the requirement for suitable gain and compensated network which is a major area of concern.This review paper proposed various designs of compensation circuit topologies to achieve the effectiveness of the CPT scheme for Wireless Power Transfer(WPT)systems.展开更多
基金Faculty of Engineering&Technology,University Polytechnic,JMI,New Delhi to support this research.
文摘The challenges that electric vehicles(EVs)must overcome today include the high cost of batteries,poor specific energy,and ineffectiveness in estimating the state of batteries using traditional methods.This article reviews(i)current research trends in EV technology according to the Web of Science database,(ii)current states of battery technology in EVs,(iii)advancements in battery technology,(iv)safety concerns with high-energy batteries and their environmental impacts,(v)modern algorithms to evaluate battery state,(vi)wireless charging technology and its practical limitations,(vii)key barriers to battery technology,and(viii)conclusions and recommendations are also provided.This paper examines energy-storage technologies for EVs,including lithium-ion,solid-state,and lithium-air batteries,fuel cells,and ultracapacitors.The core characteristics,advantages,disadvantages,and safety concerns associated with these batteries are discussed.Internet-of-Things(IoT)-based approaches are described to assess the battery state in real-time.Furthermore,for enhanced electric mobility,wireless power transfer charging techniques are discussed.Finally,recent advancements and potential outcomes for future EV technologies are outlined.
文摘The compensation circuit plays a crucial role in the framework of Capacitive Power Transfer(CPT)in wireless Electric Vehicle(EV)charging schemes.Various wireless charging factors such as power transfer capacity,efficiency,and frequency depend on the design of compensation circuit topology.In CPT,power is transferred between the two capacitor plates(one transmitter plate embedded on the track and the other plate which is inserted in the wireless EV chassis operates as a receiver).The transmitter plate is excited by a high frequency source and power is transferred between the plates through an electric field.This review paper introduced an experimental prototype of the Corbin Sparrow(CS),featuring an onboard battery charger and an off-board DC charging port.Additionally,it presented a novel conformal bumper-based approach,highlighting its distinct advantages compared to alternative charging methods.The major challenges to employing capacitive technology in transferring power up to kW level are-the greater air gap between the capacitor of vehicle chassis&ground and the high value of electric field strength in the contour of plates.Also,due to the lowvalue of coupling capacitance,there is the requirement for suitable gain and compensated network which is a major area of concern.This review paper proposed various designs of compensation circuit topologies to achieve the effectiveness of the CPT scheme for Wireless Power Transfer(WPT)systems.
