Using the Standard Electrodynamometer Wattmeter for Harmonic Power Measurement

Abstract

Historically, for the measurement of electrical power, the wattmeter electrodynamometer was used, but when dealing with frequencies higher than those of power line, it was necessary to develop special equipment. Digital power meters are currently used. This work studies the use of the electrodynamometer wattmeter in a very frequent application such as power measurement at the output of a frequency converter. Measurements are made by comparing the readings of this instrument with those of digital instruments in different scenarios, depending on the frequency, cos φ, load, etc., to determine under which conditions it is useful.

Keywords

• electrodynamometer wattmeter
• frequency converter
• power measurement
• power harmonics
• power electronics