A18
ΔV10 flicker The ΔV10 flicker function can calculate ΔV10 flicker values by making a calcula-
tion using the arithmetic expression that em
ploys the perceived flicker curve,
which is based on the digital Fourier transformation, and then converting the
obtained value into the 100-volt-equivalent value.
Calculation:
ΔV10 =
ΔUn : RMS value [V] for voltage fluctuations in frequency fn.
an : Luminosity coefficient for fn where 10 Hz is 1.0.
(0.05 Hz to 30 Hz)
Evaluation period: for 1 minute
ΔV10 flicker
function diagram
ΔV10 Perceived
flicker coefficient
ΔV10 Flicker Meter
100
U
f
2
---------
a
n
ΔU
n
⋅()
2
n1=
∞
A/D
con-
ver-
sion
Waveform
data
Voltage
waveform
Squar
e mul-
tiplier
RMS
calculation
1-wave
RMS value
RMS value
averaging
RMS 1-minute
average value
Storage
1-minute
voltage
fluctuation
data
ΔV10
calcula-
tion
100 V
conver-
sion
ΔV10
ΔV10
Luminosity
coefficient
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