Current sensor set for Formula One power transmission system
Isabellenhuette Heusler
IVT-F current sensor
The IVT-F current sensor from Isabellenhütte Heusler will be used by nine teams competing in the 2012 Formula One (F1) series of races, as part of an electric kinetic energy recovery (E-KER) system.
E-KERS — part of the power transmission systems used in F1 cars — converts kinetic energy from the breaking process into electricity using an electric motor that doubles-up as a generator.
The power is then stored in lithium-ion batteries and fed back into the motor in strictly regulated quantities, boosting the car’s combustion engine when accelerating.
The quantity of power supplied by the E-KERS system is controlled using the IVT-F integrated current sensor, which features a three-channel measuring system for current, voltage and temperature.
Key specifications
- Internal sample rate of 3.5KHz
- Fixed calculation of mean value over 16 sampling values
- U/I with input filter cut-off frequency of fg=350Hz
- Measured value output of 500Hz
- CAN bus has 1MBit data rate
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