Test results from tests at Arlanda
Test circuit at Arlandastad Testrack
The picture below shows the test circuit and the rail
The tests have been performed at Arlanda at 80 occasions. The weather has varied from sunny and dry to rain, snow, ice and cold temperatures down to minus 14 degrees centigrade.
After each test occasion the tested equipment has been analyzed and modifications have been made or totally new equipment has been designed and manufactured at Elways workshop in order to be used at the newt test occasion. So far eight models of current collectors and four models of snow and ice cleansers have been manufactured, tested and modified
Transmission of power from the track to a car up to 50 m per hour
Power has been transmitted from the track to the car via sliding contacts. Behind the car a light bar is located that consume the power that is picked up from the rail. The light bar consists of eight heaters and four halogen lamps that together consume the same power as an electric car travelling at 90 km per hour would do.
Tests in June 2012
Testing of the current collector finding the track
Tests of letting the current collector find the track at speeds up to 80 km per hour has been performed.
Tests in September 2012
Current collector find the track and supply a load of 12 000 W.
Wagon with electric motor fed from the track push the car at 50 km per hour
The car is only fed by electricity from the rail in the road. An electric motor is installed on a wagon behind the car where the wheels of the wagon are driven by an electric motor. The car is pushed by this motor that takes all power from the rail in the road via a sliding contact. There is no battery in the car.
Tests in Oktober 2012
Testing during the winter
During the winter tests have been performed at fourteen occasions. As there is only normal traffic between the tests it has been necessary to start each test by clean the track from snow and ice. This is very unfavorable compared to future installations where the tracks will be cleaned when the roads are plowed and thereafter the track will be kept clean by the electric vehicles that have a cleansing device in front of the contact.
At all fourteen occasions the cleaning of ice and snow was successfully performed. At certain occasions the track had been heated by a built in heat cable but in many cases the cleaning was successfully made without heating.
Below some testing occasions are shown
Test at minus 14 degrees
|Test at minus 14 degrees on December 03 2012. Wet snow had frozen in the track||Cleaning of the track with a ”snow plow”|
Test under snow fall
| Test under snow fall on December 11 2012. The track was difficult to find.
Here it can be seen after excavation.
|New version of the snow plow pulled by the car||After plowing the track was cleaned and the tests could be performed|
Plowing of the track at higher speed
Test with a lot of snow in the track
Test in February with a lot of snow in the track. The lit lamps show that the contact works despite the snow.
Elways presented on June 04 results of the winter tests to around forty invited guests including press. Also shown were tests of connecting a light bar consisting of fourteen thousand watt lamps to the track at high speed via a shorter arm than earlier.
Some of the guests then could travel in a car pushed by a motor powered from the track in the road
The following presentation was shown link
Plowing during the winter (film)
Contact tests during the winter (film)
Light bar that is connected at high speed (film)
Full truck Power at Arlanda Test Track
Elways has earlier tested current and voltage separately equivalent to full truck power. After modification of the test circuit full voltage and current have now been tested simultaneously. The voltage to the rail has been doubled and the current has been increased almost ten times.
A truck consume as an average around 160 kW. At the tests Elways has done currents and voltages corresponding to 200 kW have been reached.
The picture shows the test where a new reinforced contact is used to feed the load that is located on the roof of the car.
Clip below shows a trip with full truck power. The lamps shows that the power is fed during the whole trip.
Conclusions of the testing
The test track has offered very severe conditions as tests have only been performed once a week at the most. Between these tests no cleaning of the track has been made, only normal plowing of the road. Ideally the track should be cleaned in conjunction with the plowing but as this has not happened wet snow has sometimes been plowed into the track and thereafter frozen. Despite this the track has every time successfully been cleaned and the conclusion is that it is possible to clean the track from all types of snow and ice that has occurred during the winter.
The current collector has been improved all along the winter and the final version functions satisfactory under very severe winter conditions also without heating of the rail.
A film showing the most important tests is available on