- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373980 > ADE7758ARWZRL (ANALOG DEVICES INC) Poly Phase Multifunction Energy Metering IC with Per Phase Information PDF資料下載
參數(shù)資料
| 型號： | ADE7758ARWZRL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Poly Phase Multifunction Energy Metering IC with Per Phase Information |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | LEAD FREE, MS-013-AD, SOIC-24 |
| 文件頁數(shù)： | 38/68頁 |
| 文件大?。?/td> | 1584K |
| 代理商： | ADE7758ARWZRL |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁當(dāng)前第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁
ADE7758
If the active power of that phase is positive, no change is ma
to the sign of the reactive power. However, if the sign of the
active power is negative in that phase, the sign of its reactive
power is inversed before summing and creating VARCF pulses.
This mode should be used in conjunction with the absolute
value mode for active power (Bit 5 in the COMPMODE
register) for APCF pulses. Table 10 shows the effect of set
the ABS and SAVAR bits of the COMPMODE register.
Rev. A | Page 38 of 68
de
ting
APCF = Watts
VARCF = VAR
APCF = |Watts|
VARCF = -VAR
If watt < 0
The effects of setting the ABS and SAVAR bits of the
COMPMODE register results as follows when ABS = 1
:
If watt > 0
0
INPUT TO BVARHR
REGISTER
INPUT TO AVARHR
REGISTER
INPUT TO CVARHR
REGISTER
+
+
+
INPUT TO BVAHR
REGISTER
INPUT TO AVAHR
REGISTER
INPUT TO CVAHR
REGISTER
+
+
+
0
1
VARCF
VARCFNUM[11:0]
VARCFDEN[11:0]
÷
DFC
VACF BIT (BIT 7) OF
WAVMODE REGISTER
÷
4
Figure 73. ADE7758 Reactive Power Frequency Output
The output
division registers before sending to the APCF pulse output.
Namely, VARCFDEN/VARCFNUM pulses are needed at the
DFC output before the VARCF pin outputs a pulse. Under
steady load conditions, the output frequency is directly
proportional to the total reactive power.
equency
cy conversion in the
t power.
e
is frequency output are similar to that
from the DFC is divided down by a pair of fr
Figure 68 illustrates the energy-to-frequen
ADE7758. Note that the input to the DFC can be selected
between the total reactive power and total apparent power.
Therefore, the VARCF pin can output frequency that is
proportional to the total reactive power or total apparen
The selection is made by setting the VACF bit (Bit 7) in the
WAVMODE register. Setting this bit to logic high switches th
input to the total apparent power. The default value of this bit is
logic low. Therefore, the default output from the VARCF pin is
the total reactive power.
All other operations of th
of the active power frequency output (see the Active Power
Frequency Output section).
Line Cycle Reactive Energy Accumulation Mode
The line cycle reactive energy accumulation mode is activated
by setting the LVAR bit (Bit 1) in the LCYCMODE register. The
total reactive energy accumulated over an integer number of
zero crossings is written to the VAR-hr accumulation registers
after the LINECYC number of zero crossings has been detected.
The operation of this mode is similar to watt-hr accumulation
(see the Line Cycle Active Energy Accumulation Mode section).
When using the line cycle accumulation mode, the RSTREAD
bit (Bit 6) of the LCYCMODE register should be set to Logic 0.
APPARENT POWER CALCULATION
Apparent power is defined as the amplitude of the vector sum of
the active and reactive powers. Figure 74 shows what is typically
referred to as the power triangle.
0
R
ACTIVE POWER
APPARENT
POWER
θ
Figure 74. Power Triangle
There are two ways to calculate apparent power, namely the
arithmetical approach or the vectorial method. The arithmetical
method uses the product of the voltage rms value and current
rms value to calculate apparent power. Equation 22 describes
the arithmetical approach mathematically.
S
=
VRMS
×
IRMS
(22)
where
S
is the apparent power, and
VRMS
and
IRMS
are the
rms voltage and current, respectively.
The vectorial method uses the square root of the sum of the
active and reactive power, after the two are individually
squared. Equation 23 shows the calculation used in the vectorial
approach.
2
2
Q
P
S
+
=
(23)
where
S
is the apparent power,
P
is the active power, and
Q
is
the reactive power.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADE7759ARSRL | Active Energy Metering IC with di/dt Sensor Interface |
| ADE7759ARS | 8-Channel 14-Bit Single-Supply Voltage-Output DAC; Package: LQFP (10x10mm); No of Pins: 52; Temperature Range: Industrial |
| ADE7759 | Active Energy Metering IC with di/dt Sensor Interface |
| ADE7760ARSRL | Energy Metering IC with On-Chip Fault Detection |
| ADE7760 | 8-Channel 14-Bit Single-Supply Voltage-Output DAC; Package: LQFP (10x10mm); No of Pins: 52; Temperature Range: Industrial |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADE7759 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Active Energy Metering IC with di/dt Sensor Interface |
| ADE7759ARS | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 能量測量 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:* |
| ADE7759ARSRL | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 能量測量 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:* |
| ADE7759ARSZ | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 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:* |
| ADE7759ARSZRL | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 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:* |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。