Power Measurement

In times of power electronics Power Measurement (PM) is not only a multiplication of current and voltage but primarily an analysis of interfering high-frequency and broadband signals. Sinusoidal qualities, as once electric current and voltage, are displaced by pulse packages; power ratings do not have only 50 or 60 Hz any longer.

Beside the calculation of power for the fundamental oscillation and all signals, questions of harmonics, symmetries, flickers and start-up processes arise. Switching frequencies of drive mechanisms having several kHz require sampling rates of several hundred kHz and analogical bandwidths of input amplifiers. The demand of preciseness is far below 0.1 % and this should preferably be the case in the entire frequency spectrum and amplification range.

Applications:

• Wideband power analysis 
• Engine test benches
• Transformer tests
• RPM (rotation per minute) and torque measurement
• Determination of efficiency factor
• Harmonics analysis
• Record of dynamic processes
• Streaming up to 1 Msamples/s
• Examination of rotating field
• Hybrid cars and alternative drive systems

There are four application examples for Power Measurement:

• Measuring on Electrical Machines
• Measurements on Transformers
• Measruements for Hybrid Vehicles and other Alternative Drive Concepts
• Measuring on 400 Hz (800 Hz) Machines

Please check out our pre-configured standard models for power measurement. Standard models meet approximately 80 % of all application requirements, are cost optimized and shipped faster.