Inductive Power Transfer Solutions – Rail
Inductive Power Transfer Solutions
Inductive Power Transfer Solutions for rail-guided material handling systems or amusement rides have a protruding primary track arrangement in which an E-Pickup envelops both track cables from multiple sides. The lack of mechanical contact between stationary and moving parts of an inductive power transfer solution results in a wide range of superior features:
...for Electrified Monorail Systems
- High availability and safety
- Large mechanical traverse tolerances
- No exposed electrical contacts
- High traveling speeds
- Unlimited forward and reverse movement
- Not susceptible to environmental influences
- Low Maintenance and Operating Costs
- No wearing mechanical parts
- No collector dust generated
- Easy to install
- Brackets clip into the rail
- Double cable primary
...for Skillet Systems and Slat Conveyors
- High availability and safety
- Large mechanical traverse tolerances
- No exposed electrical contacts
- Suitable for frequent engagement/disengagement
- No arcing
- Not susceptible to environmental influences
- Low Maintenance and Operating Costs
- No wearing mechanical parts
- Easy to install
- Brackets clip into the carrier
- Double cable primary
When supplying power to rail-mounted vehicles, continuous inductive supply is generally required along the entire travel path. The inductive power transfer solutions primary track is installed parallel to the rail or along the travel path. The pick-ups and controllers are mounted on the vehicles. As with all continuous inductive power transfer solutions, transfers are made using the dual-cable model, i.e. with a forward and return cable.
Pickups and Regulators are available in different power levels and output voltages to match the applications being served. If a single pickup and regulator combination is not sufficient to provide the required power level, they can be combined to provide higher power levels together. Graded power supply is provided within the design of the regulators.
The most common output voltage is 560 V DC. 560 V DC is the DC equivalent of a 400 V AC supply. Typically, inductive power transfer systems supply power to variable speed drives or mobile controllers with integrated variable speed drives. Standard frequency inverters have an input rectifier that converts the normally supplied AC supply voltage to DC, and the variable frequencies to control drives are then applied in a second stage. Since it does not make technical sense to design inductive power transfer solutions that provide AC outputs that are immediately rectified back to DC, regulators provide DC outputs that are fed either into the phase inputs or, if necessary, directly into the DC bus of the drive.
The pickup and regulator output voltages are tailored for specific applications. E-Shape Pickups are standard for rail-guided systems, offering high power density and optimized EMC characteristics. Their design focuses the field centrally, reducing spread and enhancing efficiency. The absence of AC outputs simplifies power electronics, reducing complexity, volume, cost, and losses, resulting in economic and ecological benefits.
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Specification
Power Supplies:
Up to 40 kW nominal power and higher peak power
Loop/Track Lengths:
From few meters to some hundred meters with a single Power Supply. Hundreds of meters, going into the thousands potentially i.e., with huge EMS installation applying multiple Power Supplies.
Vehicle Side Power Levels provided:
Flat Pickups come typically with integrated power electronics to minimize installation efforts on the vehicle side by eliminating extra wiring, plugs, etc. E-Pickups come typically with separate power electronic units (Regulators).
Flat Pickups go up to 2,5 kW and have mostly 560 V DC outputs supplying the DC-buses in Inverters typically applied in automated systems to drive motors.
E-Pickups go up to 4 kW, Regulators do match power wise and come mostly also with 560 V DC outputs, dedicated solutions may come with different voltages, i.e. 48 V DC.
Higher power requests can be served by the implementation of 2 or more Pickups respectively Pickup and Regulator combinations.
