Sony develops highly efficient wireless power transfer system

Wireless-power-transfer-sysytem_prototypeSony Corporation announced the development of a highly efficient wireless power transfer system that eliminates the use of power cables from electronic products such as television sets. Using this system, up to 60 Watts of electrical energy can be transferred over a distance of 50cm (at an efficiency of approximately 80%, approximately 60% including rectifier).

This new wireless power transfer system incorporates a form of contactless electrical energy transmission technology based on magnetic resonance. With magnetic resonance, electromagnetic energy is only transferred to recipient devices that share the identical resonant frequencies as the energy source, so energy transfer efficiency is maintained, even when misalignment occurs. Furthermore, even if there are metal objects located between the transmitter and receiver, no heat induction occurs.

Sony Wireless power transfer sysytem (prototype)

Sony has also drawn on its years of experience developing high radio frequency (RF) technologies for use in wireless communications and broadcast products to create a new rectifier that realizes both high speed and high efficiency. The new wireless power transfer system combines these technologies to realize transfer efficiency of 60%, even when a rectifier is included. Sony has also developed passive extender units that are set to the same frequencies as the transmission and recipient devices, enabling the transfer distance to be extended from 50cm to 80cm* without any degradation in transfer efficiency.

With the growth in networked products, the number of cables used to connect these products has also increased. While data cables are rapidly being replaced with wireless communication systems such as Wi-Fi, the demand for wireless power transfer systems is also continuing to grow. Sony will proceed with its efforts to develop further technologies that meet customer needs for the wireless transfer of power across a wide range of products, distances and energy levels.

Main Features

1. High speed rectifier realizing high transfer efficiency

Sony has drawn on its years of experience and expertise in RF technologies, and also incorporated optimal new components to develop a new rectifier that combines both high speed and high efficiency. This minimizes energy loss when transferring energy from the transmitter to the receiver, and enables products such as television sets and mobile PCs to be efficiently powered, wirelessly.

2. Transfer distance is able to be extended using passive extender units

Passive extender units placed between the transmitter and receiver units enable the transfer distance to be extended without any degradation in efficiency. Based on fundamental experiments conducted using the component devices only, transfer distance can be extended from 50cm to 80cm. Although relatively large transmitter and receiver units are generally required for transferring energy over long distances, passive extender units can be used to relay power between small-sized transmitter and receiver units.

Source: Sony

Related posts

Samsung unleashes the Galaxy On5 smartphone

Samsung unleashes the Galaxy On5 smartphone

Samsung has released one more smartphone – this is hardly news for people who follow the smartphone market since we have gotten used to Samsung releasing new handsets on a daily basis. But the new device is here so why not share a few words on it? The new smartphone is called Galaxy On5 and...

Acer releases C110 and C112 pico projectors

Acer is now preparing the release of a two new ultra portable projectors which will allow you to share your pictures, videos and  presentations on the go. The new C110 and C112 pico projectors are USB powered and offer WVGA (854 x 480) resolution. The C110 measures just 110x 85x 25mm and...

Seagate GoFlex Media App is now Available for Android devices

Seagate today announced the release of its promised app for Android that offers wireless integration with your smartphone and company's GoFlex Satellite battery-powered external drive which is now available for $199.99. The new App is now available for free from the Android Market and iTunes...

Leave a comment