Sydney Trains – Recovering Traction Regenerative Energy

Sydney Trains rail network utilise energy dissipating resistors (EDRs) to dissipate excess regenerative braking energy and converting this electrical energy to heat released to the environment.

When considering replacement of EDRs new technologies were investigated that reduce the busbar voltage during excessive regenerative braking and recover the excess energy dissipated.

An innovative solution using an inverter system will see as much of the available braking energy as possible absorbed and fed back to the AC High Voltage (HV) network, reducing overall energy consumption.

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