![]() The driver receives consistent, predictable feedback. “You apply the brakes to slow down, which is a learned behavior and it’s authentic. “We made the decision to go a different route with the Taycan,” says Albers. Some car manufacturers have the electric drive’s recuperation system activate automatically the moment the driver removes their foot from the gas pedal, which is referred to as one-pedal driving. ![]() “And we plan to increase this value.”Ĭoordinating recuperation: In combination with the electromechanical brake booster, Porsche Stability Management (PSM) ensures that the Taycan always maintains the same pressure point in the brake pedal. “That’s at the absolute top of the field,” says Albers. Thanks to the design of the electric motors and the electronics in conjunction with Porsche’s signature intelligent control, the Taycan can recuperate with up to 290 kilowatts. Just in case – take, for instance, downhill driving – the hydraulic wheel brake is designed for high performance. The conventional wheel brake is then applied to a higher degree.” It may also activate because the battery is already full and can no longer recharge through recuperation. “The electric powertrain cannot do that alone. “But in extreme situations, such as full braking from a top speed in a fully loaded Taycan, a maximum braking capacity of more than two megawatts must be applied,” says Albers. While the driver cannot feel the difference, they can see it in the power meter in the instrument cluster.Īround 90 percent of everyday braking is 100 percent electric, allowing the Taycan to recover energy. Within milliseconds, the electronics decide what percentage of the braking will be electric and what percentage will be hydraulic. The experts in Weissach have developed a complex recuperation strategy. The conventional hydraulic wheel brake and electric motors can slow down the vehicle together. The control units and power electronics of the electric motors in the Taycan are therefore intelligently connected with the controls and logics of the brake control system. And because it takes a lot of energy to power the motor and thus turn the rotor against the magnetic resistance, this negative torque can be used to brake the vehicle.ĭouble the power: The two electric motors at the front and rear axles of the Taycan are incorporated into the brake system. It generates electrical energy, rather than consuming it. But each electric motor can also function as a generator, in which case the motor continues to turn in the same direction, but is now powered by the wheels rather than powering them itself. “Electric motors can generally be controlled in four-quadrant operation.” In other words, an electric motor can work with both the rotation speed and torque running in the same – positive – direction. “We incorporate the electric motors we produce in Zuffenhausen into the brake system for the purpose of energy recovery,” explains Ingo Albers, Head of Chassis Development at the Porsche development center in Weissach. This recuperation and the propulsion itself both play a key role in the efficiency of electric vehicles. When braking from 100 kmh, the Taycan generates four times as much energy as when braking from 50 kmh. Kinetic braking energy increases twice as fast as speed – double the speed means four times the recuperation. Recuperation has established itself as a technical term. Electric vehicles, on the other hand, can recover a large portion of this energy, using the electric machines as generators when slowing down and storing the power generated in the battery.įor example, the Porsche Taycan can use a significant amount of the braking energy for propulsion, which is referred to as recuperation, based on the Latin recuperare. But a great deal of energy is consumed in the blink of an eye, as vehicles with an internal combustion engine convert kinetic energy into heat when the brakes are applied, which they’re unable to use. No problem – you’re maintaining a safe distance and slow down to 100 kmh. The autobahn is empty and you’re driving 200 kmh, until a small delivery van changes lanes to pass a truck.
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