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| 型号： | ADE7754ARZRL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/44页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METERING 3PHASE 24SOIC |
| 标准包装： | 1 |
| 输入阻抗： | 370 千欧 |
| 测量误差： | 0.1% |
| 电压 - 高输入/输出： | 2.4V |
| 电压 - 低输入/输出： | 0.8V |
| 电流 - 电源： | 7mA |
| 电源电压： | 4.75 V ~ 5.25 V |
| 测量仪表类型： | 3 相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 剪切带 (CT) |
| 配用： | EVAL-ADE7754EBZ-ND - BOARD EVALAUTION FOR ADE7754 |
| 其它名称： | ADE7754ARZRLCT |
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ADE7754
0
I B *
–
I A
HPF
+
AAPOS
+
28
PHASE A
V A
AAPGAIN
1
I B *
AWGAIN
LPF2
TOTAL INSTANTANEOUS
POWER SIGNAL
I B
HPF
28
BAPOS
+
ACTIVE POWER
SIGNAL – P
PHASE B
BAPGAIN
LPF2
2752545h
1
V B
0
I B *
–
BWGAIN
I C
HPF
+
CAPOS
+
28
PHASE C
V C
CAPGAIN
LPF2
1
CWGAIN
Figure 26. Total Active Power Consumption Calculation
For example, for WATMOD = 1, when all the gains and offsets
corrections are taken into consideration, the formula that is
used to process the active power is
ENERGY CALCULATION
As stated earlier, power is defined as the rate of energy flow.
This relationship can be expressed mathematically as
? V A × ? ? ? ? 1 +
? × I A ? ? 1 + ? × I B ? + AAPOS ? × ? 1 +
+ ? V C × ? ? 1 + ? × I C ? ? 1 + ? × I B ? + CAPOS ? × ? 1 +
?
?
P =
Total Active Power =
? ? ? AAPGAIN ? ? BAPGAIN ? ? ? ?
? ? ? CAPGAIN ? ? BAPGAIN ? ? ? ?
? ? ? 2 12 ? ? 2 12 ? ? ? ?
? 2 12 ? ? 2 12 ? ? ? ?
AWG ?
2 12 ?
CWG ?
2 12 ?
dE
dt
where P = power and E = energy.
Conversely energy is given as the integral of power.
(7)
Depending on the polyphase meter service, an appropriate for-
E = ∫ Pdt
(8)
mula should be chosen to calculate the active power. The
American ANSI C12.10 standard defines the different configu-
rations of the meter. Table II describes which mode should be
chosen for each configuration.
Table II. Meter Form Configuration
The ADE7754 achieves the integration of the active power
signal by continuously accumulating the active power signal in
an internal non readable 54-bit energy register. The active
energy register (AENERGY[23:0]) represents the upper 24 bits
of this internal register. This discrete time accumulation or
summation is equivalent to integration in continuous time.
ANSI
Meter Form
WATMOD
WATSEL
Equation 9 expresses the relationship
Σ
? ∞
E = ∫ p ( t ) dt = Lim ?
? ?
?
5S/13S
6S/14S
8S/15S
9S/16S
3-wire Delta
4-wire Wye
4-wire Delta
4-wire Wye
0
1
2
0
3 or 5 or 6
5
5
7
T → 0 n = 0
?
?
p ( nT ) × T ?
? ?
(9)
where n is the discrete time sample number and T is the
Different gain calibration parameters are offered in the ADE7754
to cover the calibration of the meter in different configurations.
Note that in Mode 0, the APGAIN and WGAIN registers have
the same effect on the end result. In this case, APGAIN regis-
ters should be set at their default value and the gain adjustment
should be made with the WGAIN registers.
sample period.
REV. 0
–19 –
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADE7755 | 制造商:AD 制造商全称:Analog Devices 功能描述:Energy Metering IC with Pulse Output |
| ADE7755AARSRL | 制造商:Analog Devices 功能描述:ENERGY METERING IC WITH P - Tape and Reel |
| ADE7755AN | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| ADE7755AN-REF | 制造商:AD 制造商全称:Analog Devices 功能描述:Energy Metering IC with Pulse Output |
| ADE7755ARS | 制造商:Analog Devices 功能描述:Energy Measurement 24-Pin SSOP 制造商:Rochester Electronics LLC 功能描述:ENERGY METERING IC WITH PULSE OUTPUT - Bulk 制造商:Analog Devices 功能描述:IC ENERGY METER 制造商:Maxim Integrated Products 功能描述:POWER METERING, 24 Pin, Plastic, SSOP |
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