參數(shù)資料
型號(hào)： 71M6513-IGTR/F
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP100
封裝： LEAD FREE, LQFP-100
文件頁(yè)數(shù)： 49/104頁(yè)
文件大?。?/td> 1390K
代理商： 71M6513-IGTR/F
71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
SEPTEMBER 2011
2005-2011 Teridian Semiconductor Corporation
Page: 49 of 104
A Maxim Integrated Products Brand
FUNCTIONAL DESCRIPTION
Theory of Operation
The energy delivered by a power source into a load can be expressed as:
∫
=
t
dt
t
I
t
V
E
0
)
(
)
(
Assuming phase angles are constant, the following formulae apply:
P = Real Energy [Wh] = V * A * cos φ* t
Q = Reactive Energy [VARh] = V * A * sin φ * t
S = Apparent Energy [VAh] =
2
Q
P
+
For a practical meter, not only voltage and current amplitudes, but also phase angles and harmonic content may change
constantly. Thus, simple RMS measurements are inherently inaccurate. A modern solid-state electricity meter IC such as the
71M6513/6513H functions by emulating the integral operation above, i.e. it processes current and voltage samples through an
ADC at a constant frequency. As long as the ADC resolution is high enough and the sample frequency is beyond the harmonic
range of interest, the current and voltage samples, multiplied with the time period of sampling will yield an accurate quantity for
the momentary energy. Summing up the momentary energy quantities over time will result in accumulated energy.
Figure 12: Voltage. Current, Momentary and Accumulated Energy
Figure 12 shows the shapes of V(t), I(t), the momentary energy and the total accumulated energy, resulting from 50 samples
of the voltage and current signals over a period of 20ms. The application of 240VAC and 100A results in an accumulation of
480Ws over the 20ms period, as indicated by the curve for Accumulated Energy.
The described sampling method works reliably, even in the presence of dynamic phase shift and harmonic distortion.
-500
-400
-300
-200
-100
0
100
200
300
400
500
0
5
10
15
20
time [ms]
V
[V],
I
[A
],
P
[W
s
]
Current [A]
Voltage [V]
Energy per Interval [Ws]
Accumulated Energy [Ws]
相關(guān)PDF資料
PDF描述
71M6513H-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6513H-IGTR/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6513-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6515H-IGTW/F SPECIALTY ANALOG CIRCUIT, PQFP64
71M6515H-IGTWR/F SPECIALTY ANALOG CIRCUIT, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
71M6515H 制造商:TERIDIAN 制造商全稱:TERIDIAN 功能描述:Energy Meter IC
71M6515H_11 制造商:TERIDIAN 制造商全稱:TERIDIAN 功能描述:Up to 10ppmC precision ultra-stable voltage reference Digital temperature compensation
71M6515H-DB 功能描述:開發(fā)板和工具包 - 8051 71M6515H Demo Brd RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評(píng)估:C8051F960, Si7005 核心: 接口類型:USB 工作電源電壓:
71M6515H-IGT 制造商:Maxim Integrated Products 功能描述:METERING FRONT END - Rail/Tube
71M6515H-IGT/F 功能描述:計(jì)量片上系統(tǒng) - SoC Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時(shí)鐘頻率:70 Hz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*