New receiver antennae for EV wireless charging applications

PREMO has launched the WC-RX-Series (compact secondary coils) that delivers to the market very reliable receiver coils for wireless charger applications for electric vehicles.

Most of the motorised EVs have a plug for direct AC or DC slow or fast charging. The growing EV market is driving the desire for a more convenient and reliable means to recharge the onboard battery.

WPT needs no physical contact between the vehicle and the charging station, consequently overcoming the inconvenience and hazards created by traditional direct-conductive methods.

For the past three years, the company has been investing in innovative Inductive Components design employing both the 3DPower concept (for the magnetics involved in WPT) and the ALMATM concept (for long-range antennae using flex-magnetic core).

The main improvement in the performance of the company's new series is the magnetic core technology that gives a super high efficiency (above 95%) power transfer due to a carefully crafted combination and optimisation of the coil (Litz wire) with a flexible-core configuration that avoids air gaps and lessens heating areas. The result is a compact secondary coil with a high Q-factor (very low losses) and high reliability.