Eddie Carnet dynamometer
There are two main parts in Eddie Carnet’s dynamometer and other dynamometers, one part is called the rotor and the central axis, which is connected to the motor with a coupling. The second part is called the stator or fixed body, which is completely suspended and is connected to the dynamometer by a specific arm. Using an intermediate fluid or an electromagnetic braking force, the rotor is held by the stator and the stator reaction force is measured using a dynamometer. The torque is calculated from the product of the force along the length of the arm.
This brake is a type of eddy Carnet brake. This dynamometer is only absorption and works based on the law of vortex flow or Foucault flow. In this dynamometer, the stator part is coiled and it is stimulated by electricity and produces a magnetic field. The rotor is made in the form of blades. With the rotation of the vane rotor in the magnetic field created by the stator, the changes in the magnetic flux created according to the lens law oppose the main poles and act as a braking force. Braking force produces heat in the coil and is transferred to the outside of the dynamometer by the cooling fluid of water (water-cooled dynamometer) or air (air-cooled dynamometer).