Here's a more in-depth explanation on how the Taycan's regenerative braking works. Here's all the information provided in the Taycan press kit.
The all-wheel drive control with two electric motors and the recuperation system are unique. At up to 265 kW, the potential recuperation power is significantly higher than that of competitors. Driving tests have shown that approximately 90 percent of everyday braking is performed by the electric machines alone – without the hydraulic wheel brakes being activated.
The pulse-controlled inverters convert the direct current supplied by the Performance Battery Plus into the alternating current required to drive the electric motors. The reverse happens during braking: Here they convert the alternating current obtained during recuperation into direct current for charging the battery. In the Taycan Turbo S, a pulse-controlled inverter with a maximum current of 600 amps is used on the front axle, which can generate even more power and torque than the 300-amp, pulse-controlled inverter of the Taycan Turbo. Both pulse-controlled inverters operate with a remarkably high efficiency of almost 98 per cent.
Recuperation: recovering high levels of energy
In internal combustion engine vehicles, the kinetic energy present at the brakes is converted into heat during deceleration. With electric vehicles, it is possible to recover a large portion of this kinetic energy, use the electric motors as generators during deceleration, and feed the battery with the power generated.
In the Taycan, Porsche takes its own approach in a number of ways within these parameters:
• The maximum potential recuperation capacity of up to 265 kW is significantly greater than that of most competitors, decelerations of up to 3.8 m/s2 are recuperated.
• When the accelerator pedal is released, the Taycan is designed to always roll or coast as far as possible; the available kinetic energy is reserved for dealing with the driving route.
• Recuperation takes place only when the brake pedal is pressed, but then, as mentioned above, with a very high level of energy recovery.
With the strategy of controlling recuperation mainly via the brake pedal, the customer experiences reproducible and predictable deceleration behaviour which is independent of battery charge and temperature. Testing has shown that, Thanks to the Taycan’s high recuperation output of up to 265 kW, approximately 90 percent of braking operations in everyday use are performed by the electric motors alone, without activating the wheel brakes. For this reason and for the first time ever, Porsche is prescribing a time-dependent replacement interval for the brake pads: they must be replaced every six years.