DSPを用いたひずみ波交流電力計の試作

概要

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The authors have been engaged in the development of a wide frequency range wattmeter utilizing a Digital Signal Processor ; with input terminals being made up of voltage/current sensors of magnetic balance type. In general, measurements errors are attributed to the measuring interval "T", the measured voltage and/or current frequency. However, this error can be reduced to minimum by setting T to integer multiples of the AC voltage period. They propose, in this paper, a procedure and a DSP control program to reduce measurement error. Experimental results are given to illustrate the efficiency of this error reduction system.
システム制御情報学会の論文