Data Sheet
ADE7880
Table 20. Harmonic Engine Outputs When Phase A, Phase B, or Phase C is Analyzed and the Registers Where the Values are Stored
Quantity
RMS of the Fundamental Component
RMS of a Harmonic Component
Active Power of the Fundamental Component
Active Power of a Harmonic Component
Reactive Power of the Fundamental Component
Reactive Power of a Harmonic Component
Apparent Power of the Fundamental Component
Apparent Power of a Harmonic Component
Definition
V1, I1
V x , I x , x = 2, 3,…, N
V y , I y , y = 2, 3,…, N
V z , I z , z = 2, 3,…, N
P 1 = V 1 I 1 cos(φ 1 ? γ 1 )
P x = V x I x cos(φ x – γ x ), x = 2, 3,…, N
P y = V y I y cos(φ y – γ y ), y = 2, 3,…, N
P z = V z I z cos(φ z – γ z ), z = 2, 3,…, N
Q 1 = V 1 I 1 sin(φ 1 ? γ 1 )
Q x = V x I x sin(φ 1 ? γ 1 ), x = 2, 3,…, N
Q y = V y I y sin(φ y – γ y ), y = 2, 3,…, N
Q z = V z I z sin(φ z – γ z ), z = 2, 3,…, N
S 1 = V 1 I 1
S x = V x I x , x = 2, 3, …, N
S y = V y I y , y = 2, 3, …, N
S z = V z I z , z = 2, 3, …, N
ADE7880 Register
FVRMS, FIRMS
HXVRMS, HXIRMS
HYVRMS, HYIRMS
HZVRMS, HZIRMS
FWATT
HXWATT
HYWATT
HZWATT
FVAR
HXVAR
HYVAR
HZVAR
FVA
HXVA
HYVA
HZVA
Power Factor of the Fundamental Component
pf 1 = sgn ( Q 1 ) ×
P 1
S 1
FPF
Power Factor of a Harmonic Component
pf x = sgn ( Q x ) ×
pf y = sgn ( Q y ) ×
pf z = sgn ( Q z ) ×
P x
S x
P y
S y
P z
S z
, x = 2, 3,…, N
, y = 2, 3,…, N
, z = 2, 3,…, N
HXPF
HYPF
HZPF
, HD I x = x , x = 2, 3,…, N
Total Harmonic Distortion
Harmonic Distortion of a Harmonic Component
( THD ) V
( THD ) I
HD V x =
=
=
V x
V 1
V 2 ? V 1 2
V 1
I 2 ? I 1 2
I 1
I
I 1
VTHD
ITHD
HXVHD, HXIHD
HD V y =
V y
V 1
, HD I y =
I y
I 1
,y = 2, 3,…, N
HYVHD, HYIHD
, HD I z = z ,z = 2, 3,…, N
HD V z =
V z
V 1
I
I 1
HZVHD, HZIHD
Rev. A | Page 59 of 104
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