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参数资料
| 型号： | 71M6515H-IGTR/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 封装： | LEAD FREE, LQFP-64 |
| 文件页数： | 21/60页 |
| 文件大小： | 826K |
| 代理商： | 71M6515H-IGTR/F |
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71M6515H
Energy Meter IC
DATA SHEET
JULY 2011
Page: 28 of 60
2005
2011 Teridian Semiconductor Corporation
1.6
A Maxim Integrated Products Brand
Subtract 8 from 7:
9.
)
sin(
)
60
tan(
2
300
60
S
XI
XV A
A
E
φ
=
use equation 5:
10.
)
sin(
)
60
tan(
)
cos(
2
180
0
300
60
S
E
φ
+
=
11.
)
tan(
)
60
tan(
)
2
(
180
0
300
60
S
E
φ
+
=
12.
+
=
)
2
)(
60
tan(
)
(
tan
180
0
300
60
1
E
S
φ
Now that we know the AXV, AXI, and φS errors, we calculate the new calibration voltage gain coefficient from the previous ones:
XV
NEW
A
V
CAL
V
CAL
_
=
We calculate PHADJ from
φ
S, the desired phase lag:
[
]
[
]
+
=
)
2
cos(
)
2
1
(
1
)
tan(
)
2
sin(
)
2
1
(
)
2
cos(
)
2
1
(
2
)
2
1
(
1
)
tan(
2
0
9
0
9
0
9
2
9
20
T
f
T
f
T
f
PHADJ
S
π
φ
π
φ
Finally, we calculate the new calibration current gain coefficient, including compensation for a slight gain increase in the phase
calibration circuit.
2
9
0
9
0
9
20
)
2
1
(
)
2
cos(
)
2
1
(
2
1
))
2
cos(
)
2
1
(
2
(
2
1
_
+
+
=
T
f
T
f
PHADJ
A
I
CAL
I
CAL
XI
NEW
π
Alternative Calibration Procedures
It is possible to implement a fast calibration based on only one measurement with a zero-degree load angle. Details can be
found in the TERIDIAN Application Note AN_651X_022 (Calibration Procedures).
Calibration Procedure for Rogowski Sensor
Rogowski coils generate an output signal that is the derivative of the input current. The 6515H Rogowski module implemented
in the Rogowski CE image digitally compensates for this effect and has the usual gain and phase calibration adjustments.
Additionally, calibration adjustments are provided to eliminate voltage coupling from the sensor input.
Current sensors built from Rogowski coils have relatively high output impedances that are susceptible to capacitive coupling
from the large voltages present in the meter. The most dominant coupling is usually capacitance between the primary of the
coil and the coil’s output. This coupling adds a component proportional to the derivative of voltage to the sensor output. This
effect is compensated by the voltage coupling calibration coefficients.
As with the CT procedure, the calibration procedure for Rogowski sensors uses the meter’s display to calibrate the voltage
path and the pulse outputs to perform the remaining energy calibrations. The calibration procedure must be performed to each
phase separately, making sure that the pulse generator is driven by the accumulated real energy for just that phase. In other
words, the pulse generator input should be set to WhA, WhB, or WhC, depending on the phase being calibrated. The IC has to
be configured for Rogowski mode (IMAGE=01). In preparation of the calibration, all calibration parameters are set to their
default values. VMAX and IMAX are set to reflect the system design parameters. WRATE and PULSE_SLOW, PULSE_FAST are
adjusted to obtain the desired Kh.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6515H-IGTW/F | 功能描述:计量片上系统 - SoC Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
| 71M6515H-IGTW1 | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Up to 10ppmC precision ultra-stable voltage reference Digital temperature compensation |
| 71M6515H-IGTWR1 | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Up to 10ppmC precision ultra-stable voltage reference Digital temperature compensation |
| 71M6521BE | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Energy Meter IC |
| 71M6521BE-DB | 制造商:Maxim Integrated Products 功能描述:Development Boards & Kits - 8051 71M6521BE Demo Brd |
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