參數(shù)資料
型號(hào)： ADE7763ARSRL
廠商： ANALOG DEVICES INC
元件分類： 電源管理
英文描述： Single-Phase Active and Apparent Energy Metering IC
中文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20
封裝： MO-150AE, SSOP-20
文件頁(yè)數(shù)： 31/56頁(yè)
文件大小： 1328K
代理商： ADE7763ARSRL
ADE7763
APPARENT POWER CALCULATION
The apparent power is the maximum power that can be
delivered to a load. V
rms
and I
rms
are the effective voltage and
current delivered to the load; the apparent power (AP) is
defined as V
rms
× I
rms
. The angle θ between the active power and
the apparent power generally represents the phase shift due to
nonresistive loads. For single-phase applications, θ represents
the angle between the voltage and the current signals—see
Figure 63. Equation 24 gives an expression of the instantaneous
power signal in an ac system with a phase shift.
Rev. A | Page 31 of 56
REACTIVE
POWER
APPARENT POWER
ACTIVE POWER
0
θ
Figure 63. Power Triangle
( )
v t
2
sin(
)
rms
V
t
ω
=
( )
i t
2
sin(
)
rms
I
t
ω
θ
=
+
(23)
)
(
)
(
)
(
t
i
t
v
t
p
×
=
)
2
cos(
)
cos(
)
(
θ
ω
θ
+
=
t
I
V
I
V
t
p
rms
rms
rms
rms
(24)
The apparent power is defined as
V
rms
×
I
rms
. This expression is
independent from the phase angle between the current and
the voltage.
Figure 64 illustrates the signal processing in each phase for the
calculation of the apparent power in the ADE7763.
V
RMS
I
RMS
0xA D055
APPARENTPOWER
SIGNAL(P)
CURRENT RMS SIGNAL – i(t)
VOLTAGERMSSIGNAL– v(t)
0x17 D338
MULTIPLIER
0
0x00
0x1C 82B3
0x00
VAGAIN
Figure 64. Apparent Power Signal Processing
The gain of the apparent energy can be adjusted by using the
multiplier and VAGAIN register (VAGAIN[11:0]). The gain is
adjusted by writing a twos complement, 12-bit word to the
VAGAIN register. Equation 25 shows how the gain adjustment
is related to the contents of the VAGAIN register.
+
1
×
=
12
2
VAGAIN
Power
Apparent
IN
OutputVAGA
(25)
For example, when 0x7FF is written to the VAGAIN register, the
power output is scaled up by 50%. 0x7FF = 2047d, 2047/2
12
= 0.5.
Similarly, 0x800 = –2047d (signed, twos complement) and power
output is scaled by –50%. Each LSB represents 0.0244% of the
power output. The apparent power is calculated with the current
and voltage rms values obtained in the rms blocks of the
ADE7763. Figure 65 shows the maximum code (hexadecimal)
output range of the apparent power signal. Note that the output
range changes depending on the contents of the apparent power
gain registers. The minimum output range is given when the
apparent power gain register content is equal to 0x800; the
maximum range is given by writing 0x7FF to the apparent
power gain register. This can be used to calibrate the apparent
power (or energy) calculation in the ADE7763.
0x10 3880
0xA D055
0x5 682B
0x0 0000
0x000
0x7FF
0x800
{VAGAIN[11:0]}
APPARENT POWER100%FS
APPARENT POWER150%FS
APPARENT POWER50%FS
APPARENT POWER
CALIBRATION RANGE,
VOLTAGE AND CURRENT
CHANNEL INPUTS: 0.5V/GAIN
0
Figure 65. Apparent Power Calculation Output Range
Apparent Power Offset Calibration
Each rms measurement includes an offset compensation
register to calibrate and eliminate the dc component in the rms
value—see the Channel 1 RMS Calculation and Channel 2 RMS
Calculation sections. The Channel 1 and Channel 2 rms values
are then multiplied together in the apparent power signal
processing. Because no additional offsets are created in the
multiplication of the rms values, there is no specific offset
compensation in the apparent power signal processing. The
offset compensation of the apparent power measurement is
done by calibrating each individual rms measurement.
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參數(shù)描述
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ADE7763ARSZ 制造商:Analog Devices 功能描述:IC, SINGLE PHASE ENERGY METER, SSOP-20
ADE7763ARSZRL 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:*
ADE7763ARSZRL 制造商:Analog Devices 功能描述:IC, SINGLE PHASE ENERGY METER, SSOP-20
ADE7768 制造商:AD 制造商全稱:Analog Devices 功能描述:Energy Metering IC with Integrated Oscillator and Positive Power Accumulation
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