IPT® Charge
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IPT®Charge is an inductive coupling system that is automated and fully intervention free. It provides efficient battery charging for all kinds of vehicles, such as electric cars and buses, industrial trucks, and most other similar vehicles.
Optimized Charging
The charging process is optimized by a constant interaction between the onboard battery management system and the track supply. The track supply only provides the instantaneously required power.
In contrast to conventional charging systems – conductive and “plugged” inductive systems - IPT®Charge does not use any plugs or paddles and is fully intervention free.
Positioning the vehicle roughly over the primary coil is the only requirement. Primary coils can be embedded in the ground and are unobtrusive. Charging can be fully automated.
IPT®Charge can even be implemented in public areas. This means there would be no need to go to a designated area for charging, e.g. a bus depot.
Safety Aspects
Conductix-Wampfler´s IPT®Charge system is intrinsically safe. IPT®Charge has been tested and certified by competent, independent institutions. The results demonstrate that the magnetic field values do not exceed the current limits recommended by the safety standard committee for safe human exposure.
The geometry of the Conductix-Wampfler IPT®Charge system enables the primary coil and pickup to contain the magnetic field mostly in the air gap between them.
When the vehicle is off the charging position, the track supply de-energizes the primary coil.
Operating Principle
Each IPT®Charge system consists of two parts, primary and secondary, which are magnetically coupled, similar to a conventional transformer. The primary or stationary side consists of a track supply and one or more primary coils. The secondary, or vehicle side, consists of one or more pickups and rectifiers, installed onboard a vehicle. Unlike a conventional transformer, where primary and secondary are mechanically coupled, IPT®Charge is a loosely coupled system operational with an air-gap.
Opportunity Charging
IPT®Charge is a unique system which enables vehicles to operate fully on the principle of opportunity charging.
Opportunity charging, e.g. at bus stops, extends the range of an electric vehicle. Minimal onboard energy storage, enough to reach the next charging station, becomes practical and sufficient to operate a vehicle optimally.
This offers various practical scenarios:
- Onboard energy storage is reduced to a minimum to gain a higher payload and/or passenger space. Short but frequent re-charging is required, e.g. at bus stops.
- Even if charging opportunities are less frequent and only possible at large intervals, onboard energy storage capacity can be reduced significantly compared with just overnight charging. This results in a significant reduction of weight and increases vehicle efficiency.
- No worries about cables and plugs to handle
- Safe and reliable operation even in areas with public access
- Insensitive to dirt and dust
- Protected from vandalism
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