The resonant circuits were coils of copper wire which resonated with their internal capacitance dotted capacitors at 10 MHz. Power was coupled into the transmitter resonator, and out of the receiver resonator into the rectifier, by small coils which also served for impedance matching.
An idea that resonated In magnetic induction, an alternating magnetic field is generated in a transmitter coil and then converted into electrical current in a receiver coil. Wireless power systems that exploit this technique have been around for decades, with cordless toothbrushes offering one example.
But traditional wireless power systems based on magnetic induction come with severe operational limitations, especially in transfer distance and positioning. Resonance technology lets you move that receiver farther apart and still transfer energy efficiently, and the orientation of the device is less critical than it is in a traditional system.
From a safety perspective, it satisfies the same regulatory limits as common household electronics and appliances. Powering up under difficult conditions In addition to offering compelling increases in convenience for cars and consumer electronics, the WiTricity technology will provide dramatic enhancements in applications where power is difficult to deliver.
In one example, WiTricity licensee Thoratec is leveraging the improved wireless power transfer to develop better heart-assist pumps. Today, such pumps are typically powered by implanted wires that exit the body. Wireless power transfer offers the potential to improve quality of life for patients, giving them greater freedom of movement, and removing the wires that are uncomfortable and likely to trigger infections.
Medical devices implanted several centimeters below the skin could be charged safely and with high efficiency, Kesler says.
In addition to a host of medical applications, the technology is finding many uses in industrial settings.
Wireless power transfer that works over a distance offers important advantages, for instance, in powering equipment that gets wet. The company also envisions a host of military applications, ranging from powering remotely operated vehicles to rationalizing the collections of batteries carried by foot combatants.
In this highly competitive market, numerous companies will offer different technologies and system designs. Many products will work by traditional magnetic induction, but those using magnetic resonance technology will need a WiTricity license, Kesler says. The firm develops prototypes and reference designs that help licensees get started on their applications, and offers the WiCAD simulation environment, a design tool that allows companies to create specifications for their designs virtually before building expensive prototypes.
WiTricity also sells demonstration products that allow companies considering the technology to see it in action.Concepts for wireless energy transmission via laser Leopold Summerer, Oisin Purcell ESA - Advanced Concepts Team Keplerlaan 1, NLAZ Noordwijk, The Netherlands.
Nikola Tesla's Idea of Wireless Transmission of Electrical Energy is a solution for World Energy Crisis The following are past newspaper articles more than . According to California regulators, 85 percent of customers in the state will source electricity from entities other than investor-owned utilities by It’s forcing them to take a hard look.
Type or paste a DOI name into the text box. Click Go. Your browser will take you to a Web page (URL) associated with that DOI name. Send questions or comments to doi. Wireless power transfer (WPT), wireless power transmission, wireless energy transmission (WET), or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link.
But some plans for wireless power involve moving electricity over a span of miles. A few proposals even involve sending power to the In the s, Canada's Communications Research Centre created a small airplane that could run off power beamed from the Earth.
The unmanned plane, Need for wireless power transmission Wireless transmission.