ade7880 Analog Devices, Inc., ade7880 Datasheet - Page 57

• Manufacturer Part Number: ade7880
• Description: Polyphase Multifunction Energy Metering Ic With Harmonic Monitoring
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
Quantity
Harmonic Distortion of a harmonic component (including the fundamental)
of the neutral current
Harmonic Distortion of a harmonic component (including the fundamental)
of ISUM
The active, reactive and apparent powers of the fundamental
component are stored into FWATT, FVAR and FVA 24-bit
signed registers. Figure 60 presents the associated data path.
CALCULATIONS
FUNDAMENTAL
COMPONENTS
AVRMSOS
BVRMSOS
CVRMSOS
AIRMSOS
2
BIRMSOS
2
CIRMSOS
2
2
2
2
7
7
7
7
7
7
Figure 58. Fundamental rms signal processing
Σ
Σ
Σ
Σ
Σ
Σ
HCONFIG[2,1] select the
HCONFIG[2,1] select the
Rev. PrE | Page 57 of 103
phase being monitored
phase being monitored
HPHASE bits
HPHASE bits
The active, reactive and apparent powers of the 3 harmonic
components are stored into HXWATT, HXVAR, HXVA,
FVRMS
FIRMS
Definition
ISUM
HD
HD
HD
HD
HD
HD
I
I
I
ISUM
ISUM
ISUM
x
y
z
z
, z = 1,2,3,…,N
=
=
=
HCONFIG[2,1] select the
x
z
y
I
I
I
I
I
I
1
x
1
z
y
1
=
=
=
gain being used
HPHASE bits
, x = 1,2,3,…,N
, z = 1,2,3,…,N
, y = 1,2,3,…,N
APGAIN or
BPGAIN or
ISUM
ISUM
ISUM
ISUM
ISUM
ISUM
CPGAIN
1
x
1
z
y
1
, z = 1,2,3,…,N
, x = 1,2,3,…,N
, y = 1,2,3,…,N
FVA
ADE7880
register
HZVRMS
HXIHD
HYIHD
HZIHD
HXVHD
HYVHD
HZVHD
ADE7880