scholarly journals Inductive High Power Transfer Technologies for Electric Vehicles

2014 ◽  
Vol 65 (2) ◽  
pp. 125-128 ◽  
Author(s):  
Nikolay D. Madzharov ◽  
Anton T. Tonchev
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
High Power ◽  
Air Gap ◽  
Contact Method ◽  
Power Transfer ◽  
Inductive Power Transfer ◽  
Advantages And Disadvantages ◽  
Fast Charging ◽  
Standard Contact

Abstract Problems associated with ”how to charge the battery pack of the electric vehicle” become more important every passing day. Most logical solution currently is the non-contact method of charge, possessing a number of advantages over standard contact methods for charging. This article focuses on methods for Inductive high power contact-less transfer of energy at relatively small distances, their advantages and disadvantages. Described is a developed Inductive Power Transfer (IPT) system for fast charging of electric vehicles with nominal power of 30 kW over 7 to 9 cm air gap.

scholarly journals A Comparative Study of S-S and LCCL-S Compensation Topologies in Inductive Power Transfer Systems for Electric Vehicles

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1913 ◽  
Author(s):  
Yafei Chen ◽  
Hailong Zhang ◽  
Sung-Jun Park ◽  
Dong-Hee Kim
Keyword(s):  
Comparative Analysis ◽  
Comparative Study ◽  
Electric Vehicles ◽  
High Power ◽  
Power Transfer ◽  
Comparative Result ◽  
Inductive Power Transfer ◽  
Load Variations ◽  
Basic Characteristics ◽  
Inductive Power

In inductive power transfer (IPT) systems, series–series (S-S) and double capacitances and inductances–series (LCCL-S) compensation topologies are widely utilized. In this study, the basic characteristics of S-S and LCCL-S are analyzed and compared in the tuning state. In addition, considering the universality of detuning, and because the two topologies have the same secondary structures, the voltage and current stress on components, input impedances, voltage gains, and output powers of S-S and LCCL-S are mainly analyzed and compared in the detuning state, which is caused by variations in the secondary compensation capacitance. To compare the efficiency of the two topologies and verify the comparative analysis, comparative experiments based on a 2.4-kW IPT experimental prototype are conducted. The comparative result shows that the S-S compensation topology is more sensitive to load variations and less sensitive to secondary compensation capacitance variations than LCCL-S. Both in the tuning and detuning states, the efficiency of the S-S topology is higher in high-power electric vehicle (EV) applications, and the efficiency of LCCL-S is higher in low-power.

Focus on OLEV

2019 ◽  
pp. 323-345
Author(s):  
Michela Longo ◽  
Morris Brenna ◽  
Federica Foiadelli
Keyword(s):  
Electric Vehicles ◽  
High Power ◽  
Wireless Power Transfer ◽  
Air Gap ◽  
Power Transfer ◽  
Wireless Power ◽  
The Road ◽  
Charging Station ◽  
At Home

Many studies on EVs have been performed in recent years, and various EVs have been developed, like pure battery EVs, hybrid EVs, battery replace EVs, or plug-in hybrid EVs, that use lithium (or polymeric) batteries that can be recharged at home or at a charging station. The biggest challenge to the commercialization of the EV is the battery. The battery problems on electric vehicles can be solved by using roadway-powered electric vehicles (RPEVs). RPEVs do not require heavy and large batteries because they directly get power while moving on a road. These vehicles can take power either in a wired or wireless way. Thus, various wireless power transfer systems (WPTSs) have been developed for RPEVs, and as consequence, new types of RPEV have been developed. WPTS for RPEVs should be able to deliver high power efficiently through a small air gap for avoiding collision between the road and the vehicle.

Thermal Evaluation of an Inductive Power Transfer Pad for Charging Electric Vehicles

2021 ◽  
pp. 1-1
Author(s):  
Seho Kim ◽  
Maedeh Amirapour ◽  
Tharindu Dharmakeerthi ◽  
Vahid Zahiri Barsari ◽  
Grant A. Covic ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Power Transfer ◽  
Inductive Power Transfer ◽  
Inductive Power

scholarly journals Potential for CO2 Reduction by Dynamic Wireless Power Transfer for Passenger Vehicles in Japan

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3342 ◽  
Author(s):  
Osamu Shimizu ◽  
Sakahisa Nagai ◽  
Toshiyuki Fujita ◽  
Hiroshi Fujimoto
Keyword(s):  
Electric Vehicle ◽  
Long Range ◽  
Electric Vehicles ◽  
Co2 Emission ◽  
Measurement Data ◽  
Wireless Power Transfer ◽  
Internal Combustion ◽  
Power Transfer ◽  
Wireless Power ◽  
Actual Measurement

In this study, a novel system named the third-generation wireless in-wheel motor (WIWM-3), which has a dynamic wireless power transfer (DWPT) system, is developed. It can extend the cruise range, which is one of the key specifications of electric vehicles. DWPT also reduces CO2 emission as the driving resistance is reduced due to light weight of the batteries. In this study, CO2 emission by an internal combustion vehicle, a long range drivable electric vehicle with the same cruise range, and an electric vehicle with WIWM-3 equipped with the DWPT system are analyzed using actual measurement data and calculated data based on actual measurement or specification data. A WPT system with WIWM-3 achieves 92.5% DC-to-DC efficiency as indicated by an actual measurement at the nominal position. Thus, the electric vehicle with DWPT can reduce up to 62% of CO2 emission in internal combustion vehicles, and the long-range drivable vehicle emits 17% more CO2 than the electric vehicle with DWPT. Moreover, it is expected that by 2050, electric vehicles with DWPT will reduce CO2 emissions from internal combustion vehicles by 95% in Japan. DWPT systems make electric vehicles more sustainable and, hence, more acceptable for consumers.

Sign in / Sign up

Export Citation Format

Share Document