參數(shù)資料
型號(hào)： ADE7763
廠商： Analog Devices, Inc.
元件分類： 電能質(zhì)量分析儀
英文描述： Single-Phase Active and Apparent Energy Metering IC
中文描述： 單相有功功率和視在電能計(jì)量IC
文件頁(yè)數(shù)： 25/56頁(yè)
文件大小： 1328K
代理商： ADE7763
ADE7763
Rev. A | Page 25 of 56
FREQUENCY (Hz)
0.4
E
54
56
58
60
62
64
66
0.3
0.2
0.1
0.0
–0.1
–0.2
–0.3
–0.4
0
Figure 52. Combined Gain Response of HPF and Phase Compensation
ACTIVE POWER CALCULATION
Power is defined as the rate of energy flow from the source to
the load. It is defined as the product of the voltage and current
waveforms. The resulting waveform is called the instantaneous
power signal and is equal to the rate of energy flow at any given
time. The unit of power is the watt or joules/s. Equation 9 gives
an expression for the instantaneous power signal in an ac system.
)
sin(ω
sin(ω
2
2
)
(
t
)
V
I
t
v
t
×
×
=
=
(7)
(8)
)
(
t
where:
V
is the rms voltage.
I
is the rms current.
)
(
)
(
)
(
t
i
t
v
t
p
×
=
)
2
cos(
)
(
t
VI
VI
t
p
ω
=
(9)
The average power over an integral number of line cycles (n) is
given by the expression in Equation 10.
∫
=
=
nT
VI
dt
t
p
nT
P
0
)
(
1
(10)
where:
T
is the line cycle period.
P
is the active or real power.
Note that the active power is equal to the dc component of the
instantaneous power signal
p
(
t
)
in Equation 8, i.e.,
VI
. This is
the relationship used to calculate active power in the ADE7763.
The instantaneous power signal
p
(
t
)
is generated by multiplying
the current and voltage signals. The dc component of the instan-
taneous power signal is then extracted by LPF2 (low-pass filter)
to obtain the active power information. This process is illustrated
in Figure 53.
INSTANTANEOUS
POWER SIGNAL
p(t) = v
×
i-v
×
i
×
cos(2
ω
t)
ACTIVEREALPOWER
SIGNAL=v
i
0x19 999A
VI
0xC CCCD
0x0 0000
0
CURRENT
i(t) = 2
×
i
×
sin(
ω
t)
VOLTAGE
v(t) = 2
×
v
×
sin(
ω
t)
Figure 53. Active Power Calculation
Because LPF2 does not have an ideal “brick wall” frequency
response (see Figure 54), the active power signal has some
ripple due to the instantaneous power signal. This ripple is
sinusoidal and has a frequency equal to twice the line frequency.
Because the ripple is sinusoidal in nature, it is removed when the
active power signal is integrated to calculate energy—see the
Energy Calculation section.
FREQUENCY (Hz)
–24
1
d
–20
3
10
30
100
–12
–16
–8
–4
0
0
Figure 54. Frequency Response of LPF2
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADE7763_13 制造商:AD 制造商全稱:Analog Devices 功能描述:Single-Phase Active and Apparent Energy Metering IC
ADE7763ARS 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin SSOP 制造商:Rochester Electronics LLC 功能描述:1 PHASE ACTIVE AND APPARENT ENERGY IC - Bulk
ADE7763ARSRL 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin SSOP T/R
ADE7763ARSZ 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測(cè)量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:*
ADE7763ARSZ 制造商:Analog Devices 功能描述:IC, SINGLE PHASE ENERGY METER, SSOP-20
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