Fraunhofer Institute proposes novel inductive charging system

Researchers at the Fraunhofer Institute for Integrated Systems and Device Technology (IISB) have developed an inductive system for charging electric vehicles from the front end. Since this allows the car to be driven much closer to the induction source—essentially touching it—the coils themselves are much smaller in diameter than in the floor-based version, coming in at 10 instead of 80 cm across. The system is more efficient, more cost-effective and makes it less probable that obstacles will disrupt the flow of energy.



BMW developing standardized inductive chargers together with Daimler

Daimler and BMW have entered into joint development of standardized inductive chargers with the aim of making electric cars more mainstream. An alternating magnetic field in the primary coil transmits power to the secondary coil at a rate of 3.6 kW, which is enough to fully charge the high-voltage batteries in many plug-in hybrids in under three hours. To make the charger suitable for all electric cars instead of hybrids, the company is working on boosting the charge rate to 7 kW, which would charge a BMW i3 overnight.

DENSO to Test Wireless Charging System

Global automotive supplier DENSO Corporation will begin a ten-month field test of its wireless battery charging system in Toyota City, Aichi Prefecture, Japan. The field test is intended to identify any potential operational issues and also look at ways to enhance the convenience of wireless charging. The field test will begin on Feb. 24 and end in December 2014.

Evatran and Bosch offer promo pricing as low as $1,998 to first 250 wireless EV charging customers

Evatran Group, Inc., in partnership with Bosch Automotive Service Solutions, is offering reduced promotional pricing to the first 250 customers of its wireless EV charging system. Evatran’s Plugless 3.3 kW Level 2 Charging System uses inductive technology to wirelessly charge the vehicle’s traction battery. The reduced pricing includes all charging hardware and is as much as a 30% discount off the Plugless system’s standard MSRP.


Raleigh NC first city to test wireless electric vehicle charging system

The City of Raleigh announced today its involvement in the Apollo Program, a nationwide initiative aimed at encouraging the adoption of electric vehicles through the use of wireless charging technology. The program, launched by local startup company Evatran, has installed six prototype wireless charging systems with participants such as Google, Duke Energy, and The Hertz Corporation. The City of Raleigh, along with the other Apollo partners, will use Plugless Power wireless charging systems on its own fleet of electric vehicles.

SAE International Agrees on Frequency of Operation and Power Classes for Wireless Power Transfer

After 3 years of international collaboration and investigation within the team, consensus had been reached on a nominal frequency of operation for the light duty vehicle guideline.  The SAE team has determined this nominal frequency of 85 kHz. In addition, the SAE J2954 Team has also determined three power classes for light duty vehicles, WPT 1 (3.7 kW),WPT 2 (7.7 kW) and WPT 3 (22 kW).

Wireless charging in focus at 2013 IEEE conference

At the 2013 IEEE Energy Conversion Congress and Exposition conference in Denver, Sept 16-20th , there were two special sessions focusing on wireless power for electric vehicles. Below you can find the links to the presentations included.

A Past, Present and Future Perspective on Wireless Power Transfer for Electric Vehicles
Grant A. Covic, The University of Auckland, New Zealand. Covic.pdf

The development and deployment of On-Line Electric Vehicles (OLEV)
Chun T. Rim, Korea Advanced Institute of Science and Tech., Korea. Chun.Rim.pdf

A High Performance 50kW Inductive Charger for Electric Buses
Hunter H. Wu, Utah State University, United States. Wu.pdf

ORNL Developments in Stationary and Dynamic Wireless
Charging Omer C. Onar, John M. Miller, P.T. Jones, Oak Ridge National Laboratory, United States. Miller_Onar.pdf

Key Challenges in EV Wireless Charging
Chris Mi, University of Michigan, United States. Mi.pdf

German Activities on Contactless Inductive Power Transfer
Jurgen Meins, Technical University of Braunschweig, Germany. Meins.pdf

Characteristic Comparison between H-shaped Core and Circular Core in Wireless Power Transfer Systems for Electric Vehicle
Yasuyoshi Kaneko, Saitama University, Japan. kaneko.pdf

Wireless EV Charging, Optimum Operating Frequency Selection for Power Range 3.3 and 6.6 kW
Grzegorz Ombach, Qualcomm, Ombach.pdf