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GKN to supply 500 electric flywheel hybrid drive systems to Go-Ahead Group for buses

Green Car Congress

The energy is drawn from the flywheel and converted back into electricity to power the traction motor, which helps accelerate the bus back up to speed, generating fuel savings of more than 20% at a significantly lower cost and weight (60 kg, 132 lbs) than battery hybrid alternatives. Useable stored energy is 1.2MJ, with peak power of 120kW.

Hybrid 311
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Kinetic Traction Systems launches with trackside flywheel energy storage technology for rail

Green Car Congress

KTSi trackside flywheel systems provide voltage support to overtaxed sections of electric rail systems, eliminating slowdowns, as well as capturing, storing and reusing the regenerative braking energy of rail cars. Regenerative electric trains convert kinetic energy into electrical energy during braking. Click to enlarge.

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HVDC Networks Come to Europe

Cars That Think

Grid operators are also installing subsea DC interconnections in other regions to share wind-energy surpluses and connect to backup supplies, such as Scandinavia’s giant hydropower reservoirs. Elias Stein The key advance was the implementation of voltage-source converters (VSCs). An inverter there can feed into the mainland AC grid.

Europe 126
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DDFlyTrain flywheel hybrid technology to deliver around 10% fuel savings, rapid ROI

Green Car Congress

The launch phase efficiency of conventional diesel rail vehicle transmissions, which typically use a torque converter on starting from rest, can be as low as 30%. Although it has previously been used exclusively on electric rolling stock, regenerative braking represents a particularly attractive fuel-saving proposition for DMUs.

Hybrid 150
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Driving the VW e-Golf; strategy, assembly in Wolfsburg, Braunschweig battery plant

Green Car Congress

The power electronics converts the direct current (DC) stored in the battery to alternating current (AC). The Golf offers the CCS charging system, enabling both AC and DC fast charging. kW charge to 100% SOC will take about 8 hours; a DC fast charge to 80% SOC will take about 30 minutes. Soeren Hinze.

Batteries 356