How does it work?

The Hedgehog System ™ enables regenerative braking, which means that energy that is otherwise wasted can be stored to charge electric buses. Regenerative braking reduces particulate matter and erosion. In addition, the possibility of connecting the rail infrastructure via a large battery will relieve pressure on the public energy network in the coming years.

Trains

At the train stations, braking energy and so-called “fresh energy” are extracted via a physical connection with the overhead line.

Energy House

The energy is then stored in the battery of the internationally patented Hedgehog System ™. In addition to the (braking) energy that is extracted from the overhead line, local renewable energy from solar panels is stored in the battery and a bi-directional smart grid connection with the public energy grid is available.

Buses

Finally, the battery in combination with the superchargers is suitable for simultaneously charging fleets of electric buses.

Het Hedgehog System™ ensures:

Storage of (braking)energy

First of all, we are faced with environmental challenges, and therefore we shouldn’t waste braking energy from trains any longer.

We have calculated that one brake action per train provides the battery package approximately 27kWh energy. At a train station like Amsterdam Central, 50 trains per hour brake as they arrive at the platforms. If we look at the 25 largest train stations in the Netherlands, this equals 9.000 trains per day. Yearly in the Netherlands, we could save an amazing 90GWh, equal to 1 million fully charged Tesla’s.

Particulate Matter reduction and less erosion 

In addition to this reuse of otherwise largely wasted braking energy, mechanical brakes are hardly used when electric braking is applied and therefore harmful particulates are reduced. Moreover, less maintenance of the trains is required, due to fewer vibrations and less braking.

Charging fleets of electric buses.

Public transport concessions in which zero emission is prescribed have shown that the existing infrastructure / electricity grid of network operators must be substantially upgraded in order to meet the energy and power requirements of the thousands of electric buses that will start up to 2030 and therefore have to be loaded daily. Charging fleets of electric buses will cause huge peaks on the public power grid. Instead of realizing new, heavy grid connections, the overhead lines of the trains can be used to supply the charging infrastructure with energy. The proximity of bus stations at train stations is an additional advantage, as there is often limited space in urban areas to realize such grid connections.

Public energy grid support and stabilization

In addition, in the next decade the significant reduction of CO2 emissions will lead to a possible unstable public energy grid caused by an excess supply and demand for electricity. This is caused by the supply of renewable energy from for example solar panels and windturbines and the increased demand for energy from industries as well as electric cars, electric heating and…electric public transport. More specifically, the opportunity charging of fleets of electric buses will cause huge peaks on the public energy grid. Het Hedgehog System™ ensures:

a. Relieving the local energy grid by avoiding new, upgraded grid connections and reducing peaks of existing connections.

b. An active contribution to the balance of the national energy grid

Het Hedgehog Systeem™ ensures:

Storage of (braking)energy

First of all, we are faced with environmental challenges, and therefore we shouldn’t waste braking energy from trains any longer.

We have calculated that one brake action per train provides the battery package approximately 27kWh energy. At a train station like Amsterdam Central, 50 trains per hour brake as they arrive at the platforms. If we look at the 25 largest train stations in the Netherlands, this equals 9.000 trains per day. Yearly in the Netherlands, we could save an amazing 90GWh, equal to 1 million fully charged Tesla’s.

Particulate Matter reduction and less erosion 

In addition to this reuse of otherwise largely wasted braking energy, mechanical brakes are hardly used when electric braking is applied and therefore harmful particulates are reduced. Moreover, less maintenance of the trains is required, due to fewer vibrations and less braking.

Charging fleets of electric buses

Public transport concessions in which zero emission is prescribed have shown that the existing infrastructure / electricity grid of network operators must be substantially upgraded in order to meet the energy and power requirements of the thousands of electric buses that will start up to 2030 and therefore have to be loaded daily. Charging fleets of electric buses will cause huge peaks on the public power grid. Instead of realizing new, heavy grid connections, the overhead lines of the trains can be used to supply the charging infrastructure with energy. The proximity of bus stations at train stations is an additional advantage, as there is often limited space in urban areas to realize such grid connections.

Public energy grid support and stabilization

In addition, in the next decade the significant reduction of CO2 emissions will lead to a possible unstable public energy grid caused by an excess supply and demand for electricity. This is caused by the supply of renewable energy from for example solar panels and windturbines and the increased demand for energy from industries as well as electric cars, electric heating and…electric public transport. More specifically, the opportunity charging of fleets of electric buses will cause huge peaks on the public energy grid. Het Hedgehog System™ ensures:

a. Relieving the local energy grid by avoiding new, upgraded grid connections and reducing peaks of existing connections.

b. An active contribution to the balance of the national energy grid

Scalability of the system

The Netherlands has a high railway density and about 100 train stations. Based on the expectations regarding electric public transport in relation to the potential of braking energy, it is estimated that the Hedgehog System™ can be installed at 60-65 intercity stations.

The possibility to connect the rail infrastructure via the Hedgehog System ™ to the charging infrastructure for e-buses provides an integral electric public transport chain. It thereby contributes to an acceleration of the energy transition, because the energy supply from the overhead line is regulated and therefore no problems will arise with the local energy grid in the urban areas around stations.

Scalability of the system

The Netherlands has a high railway density and about 100 train stations. Based on the expectations regarding electric public transport in relation to the potential of braking energy, it is estimated that the Hedgehog System™ can be installed at 60-65 intercity stations.

The possibility to connect the rail infrastructure via the Hedgehog System ™ to the charging infrastructure for e-buses provides an integral electric public transport chain. It thereby contributes to an acceleration of the energy transition, because the energy supply from the overhead line is regulated and therefore no problems will arise with the local energy grid in the urban areas around stations.

Patent braking energy trains, metro’s and trams

In 2015 Hedgehog Applications B.V. has been granted the patent: ENERGY DISTRIBUTION AND CONSUMPTION SYSTEM FOR RAILWAY STATION NR PCT/NL2014/050160. The patent describes the connection between all existing technical components necessary to store and reuse the regenerative braking energy from trains, metro’s and trams.

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Contact

Derde Oosterparkstraat 138

1092 EC Amsterdam

Phone:  +31 62 888 7364

Email: maarten@hedgehogapplications.nl

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