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| 型号： | ADE7753ARSZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 34/60页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METERING 1PHASE 20SSOP |
| 标准包装： | 66 |
| 输入阻抗： | 390 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： | 3mA |
| 电源电压： | 4.75 V ~ 5.25 V |
| 测量仪表类型： | 单相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 管件 |
| 产品目录页面： | 797 (CN2011-ZH PDF) |
| 配用： | EVAL-ADE7753ZEB-ND - BOARD EVALUATION AD7753 |
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ADE7753
90°. The resulting waveform is called the instantaneous reactive
power signal. Equation 25 gives an expression for the instanta-
The average reactive power over an integral number of lines (n)
is given in Equation 26.
neous reactive power signal in an ac system when the phase of
the current channel is shifted by +90°.
v ( t ) = 2 V sin( ω t + θ ) (23)
2 I sin( ω t )
i ( t ) =
RP =
where:
1
nT
nT
∫ Rp ( t ) dt = VI sin( θ )
0
(26)
i ′ ( t ) = 2 I sin ? ? ω t +
π ?
2 ?
?
?
(24)
T is the line cycle period.
RP is referred to as the reactive power.
Note that the reactive power is equal to the dc component of the
where:
θ is the phase difference between the voltage and current
channel.
V is the rms voltage.
I is the rms current.
instantaneous reactive power signal Rp(t) in Equation 25. This
is the relationship used to calculate reactive power in the
ADE7753. The instantaneous reactive power signal Rp(t) is
generated by multiplying Channel 1 and Channel 2. In this case,
the phase of Channel 1 is shifted by +90°. The dc component of
Rp ( t ) = v ( t ) × i ’( t )
Rp ( t ) = VI sin (θ) + VI sin(2ωt + θ)
(25)
the instantaneous reactive power signal is then extracted by a
low-pass filter in order to obtain the reactive power informa-
tion. Figure 71 shows the signal processing in the reactive
power calculation in the ADE7753.
90 DEGREE
PHASE SHIFT
INSTANTANEOUS REACTIVE
POWER SIGNAL (Rp(t))
I
π
2
+
+
49
0
MULTIPLIER
LPF2
V
ACCUMULATE REACTIVE
ENERGY IN INTERNAL
REGISTER AND UPDATE
23
0
THE LVARENERGY REGISTER
FROM
CHANNEL 2
ADC
ZERO-CROSSING
DETECTION
CALIBRATION
CONTROL
LVARENERGY [23:0]
AT THE END OF LINECYC HALF
LINE CYCLES
LPF1
LINECYC [15:0]
Figure 71. Reactive Power Signal Processing
Rev. C | Page 34 of 60
02875-0-070
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADE7753ARSZ | 制造商:Analog Devices 功能描述:ENERGY METERING IC |
| ADE7753ARSZ | 制造商:Analog Devices 功能描述:IC MULTIFUNCTION METER |
| ADE7753ARSZRL | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
| ADE7753-ARSZRL | 制造商:Analog Devices 功能描述: |
| ADE7753XRS | 制造商:Analog Devices 功能描述: |
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