家電機器使用時における高調波電流の位相特性

抄録

This paper presents that the phase characteristics in the current waveform at using home electric appliances were found. A current waveform consisting of a right triangle pulse waveform over a particular voltage phase range was focused. Then, the phase characteristics of the harmonic current of this waveform were investigated. θ_S(p) = θ_p + 360・N_p for the phase valueθ_p at each harmonic order p (p = 1, 3, 5, ..., 39) of the measured waveform were calculated. N_p is the smallest integer greater than or equal to 0 that satisfies θ_S(1) < θ_S(3) < θ_S(5) < ... < θ_S(39). The relationship between θ_S(p) and the harmonic order p is almost linear. An approximate equation of the harmonic order could be obtained using values of θ_S(p)/p. The phase values for simulation were derived from the values obtained by this approximate equation. Consequently, analyzed current waveforms using these phase values reproduced the measuredcurrent waveforms.