Analyzátor výkonů pro testování měničů na hardwarové platformě National Instruments cRIO.

Abstract

To measure input and output power of the frequency converter simultaneously is quite specific task, because the output voltage frequency varies in time. Input and output power has to be measured from the same time window and at the same time the integer multiply of signal cycles has to be processed to achieve sufficient precision. At the same time can be calculated mechanical power signals from torque and revolution sensor signals. The output circuits of frequency converter use switching semiconductor elements that shape output voltage using pulse width modulation. Output voltage contains many harmonic components and thus the sampling frequency has to be sufficiently high. The diploma thesis describes concept and implementation of power analyzer using flexible CompactRIO platform.