参数资料
型号: EVAL-ADE5169EBZ-2
厂商: Analog Devices Inc
文件页数: 60/156页
文件大小: 0K
描述: BOARD EVALUATION FOR AD5169
标准包装: 1
主要目的: 电源管理,电度表/功率表
嵌入式:
已用 IC / 零件: ADE5169
主要属性: 用于汇编语言和 C 代码的 IAR 工具
次要属性: 隔离和非隔离输出选项
已供物品: 板,软件
ADE5166/ADE5169/ADE5566/ADE5569
Note that the active power is equal to the dc component of the
instantaneous power signal, P(t), in Equation 9, that is, VI. This
is the relationship used to calculate active power in the ADE5166/
ADE5169/ADE5566/ADE5569. The instantaneous power signal,
P(t), is generated by multiplying the current and voltage signals.
The dc component of the instantaneous power signal is then
extracted by LPF2 (low-pass filter) to obtain the active power
Data Sheet
Because LPF2 does not have an ideal brick wall frequency response
(see Figure 65), the active power signal has some ripple due to
the instantaneous power signal. This ripple is sinusoidal and has
a frequency equal to 2× the line frequency. Because of its sinu-
soidal nature, the ripple is removed when the active power signal is
integrated to calculate energy (see the Active Energy Calculation
section).
information (see Figure 64).
0
0x19999A
INSTANTANEOUS
POWER SIGNAL
P(t) = V × I – V × I × cos(2ωt)
–4
ACTIVE REAL POWER
SIGNAL = V × I
–8
VI
0xCCCCD
–12
–16
0x00000
–20
CURRENT
I(t) = 2 × I × sin(ωt)
–24
VOLTAGE
V(t) = 2 × V × sin( ω t)
1
3
10
FREQUENCY (Hz)
30
100
Figure 64. Active Power Calculation
Rev. D | Page 60 of 156
Figure 65. Frequency Response of LPF2
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