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参数资料
| 型号： | 78M6610+PSU/C00T |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/63页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY MEASURMENT 1PH 16TSSOP |
| 标准包装： | 2,500 |
| 输入阻抗： | 30 千欧 ~ 90 千欧 |
| 电压 - 高输入/输出： | 2V |
| 电压 - 低输入/输出： | 0.8V |
| 电流 - 电源： | 8.1mA |
| 电源电压： | 3 V ~ 3.6 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： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
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78M6610+PSU Data Sheet
2.3
Power Calculations and Power Factor
∑ ?? ??=1 ?? ?? ?? ??
?1
???????? =
WATT
The 78M6610+PSU computes the active, reactive, and apparent power. In addition, the 78M6610+PSU
computes the fundamental power, determined only by the fundamental components of the voltage and
current and the harmonic power, determined by the harmonic components of the voltage and current.
2.3.1 Active Power Calculation
Active power is calculated as the product of the voltage and current waveforms. The resulting waveform
is the instantaneous power signal, and it is equal to the rate of energy flow at every instant of time. The
unit of power is the watt or joules/sec. The instantaneous power is then averaged over N samples
(accumulation time) for the computation of the active power available at register WATT.
The (S) ??
2.3.2 Apparent power Power is the product of RMS voltage (V RMS ) and current (I RMS ). The apparent power
results, also referred as Volt-Amps, are available at the register VA.
S = I RMS * V RMS
2.3.3 Power Factor
The power factor (PF) is calculated as active power (WATT) divided by the apparent power (S). The sign
of the power factor is determined by the active power sign.
2.3.4 Reactive Power ???? = S
The reactive power is calculated as multiplication of instantaneous samples of current ( i) and the
instantaneous quadrature voltage (Vq). The quadrature voltage is obtained through a 90° phase shift
(quadrature delay) of the voltage samples. The samples are then averaged over the accumulation time
interval and updated in the VAR register.
?? = ??
?? ?? × ???? ??
??=0
Irms
Vrms
X
S
???1
X
÷
VA
PF
Σ
i
v
X
P
N-1
N=0
÷ N
+
WATT
WATT
POff
i
Σ
v
Quadrature
Delay
Vq
X
N-1
N=0
÷ N
VAR
Figure 7: Power (Active, Reactive, and Apparent) and Power Factor Calculation
Rev 1
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 78M6611-EVM | 制造商:Maxim Integrated Products 功能描述:78M6611 EVAL BOARD - Boxed Product (Development Kits) |
| 78M6611-IVT/F | 功能描述:IC POWER MEASUREMENT AC 24-TSSOP 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:* |
| 78M6611-IVT/F/P | 制造商:Maxim Integrated Products 功能描述:PROGRAMMED - LEAD FREE - Rail/Tube |
| 78M6611-IVTR/F | 功能描述:IC POWER MEASUREMENT AC 24-TSSOP 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:* |
| 78M6611-IVTR/F/P | 制造商:Maxim Integrated Products 功能描述:PROGRAMMED - LEAD FREE/TAPE & REEL - Tape and Reel |
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