Tachogenerator for processing Signals and Data from Electrical Machine

Abstract

The paper presents the original design of the tachogenerator-accelerometer (TA) with increased capabilities. Analytical relations are given for the analysis and design of the original rotor with and without edge effects, in the presence of longitudinal slits with a bevel in the hollow rotor, depending on the low resonance frequencies (LRF). Electromagnetic processes in electromagnetic accelerometers are described by Maxwell's equations for slowly moving isotropic and conductive media. The peculiarity of the accelerometer operation is that when the rotor rotates at a certain constant speed, the resulting variable magnetic flux (due to the transverse reaction of the rotor), coupled to the measuring winding, induces an EMF proportional to the angular velocity of the rotor. This allows the accelerometer to work as a tachogenerator-unlike a standard accelerometer with a smooth hollow rotor that only measures angular acceleration. Due to its multi-functionality and improved metrological characteristics, this TA can be used in instrumentation and power engineering.