Power Quality and EMCR.B. Timens
University of Twente, P.O. Box 217, 7500 AE Enschede, The [email protected]
This work was carried out within the framework of IOP-EMVT, funded by Agentschap NL, The Netherlands
1 Introduction
Grid
Law(EN 50160) Harmonized standards
(EMC Directive Article 6)???
Load
Load
Load
Load
Load
Load
User
Point of interface(POI)
Mobile phone,Transistor radio,
Laptop,...,
Integrated mast,Office building,
...
Equipment:
Conducted immunity/susceptibility Conducted emission
Radiated immunity/susceptibility Radiated emission
Ability of an equipment or system to function satisfactorily in its electromagnetic environment without producing intolerable electromagnetic disturbances to anything in that environment
Standards for supply and consumption do not matchStandards do not cover large number of nonlinear equipment
Need for requirements on the voltage quality and current quality inside the power distribution user network (PDUN) reflecting interaction between voltage and current
2 Integrity of waveformsAll equipment have power electronic interfaces
0,00 0,01 0,02
-0,3
-0,2
-0,1
0,0
0,1
0,2
0,3CurrentVoltage
Time (s)
Cu
rre
nt
(A)
-400
-300
-200
-100
0
100
200
300
400
Vo
ltag
e (V
)
11W CF light
PF = 0.6S = 19 VAA = 0.58 App
Synchronization effects
Deviations in the voltage waveform:function of impedance of PDUN and current (and vice versa)
Photovoltaic system disturbed by power drive system (PDS) for ventilation
110
210
310
410
510
610
710
-210
-110
010
110
210
310
Single-Sided Amplitude Spectrum of V[L-PE]
Frequency (Hz)
|V[L
-PE
](f)
|
Harmonics Radio
No standards
110
210
310
410
510
610
710
-210
-110
010
110
210
310
Single-Sided Amplitude Spectrum of V[L-PE]
Frequency (Hz)
|V[L
-PE
](f)
|
Harmonics
Radio
No standards
PDSoff
PDSon
50 Hz only
L
N
j0.15 Ω
0.16 Ω
0.24 Ω
j0.1 Ω
3 PDUN impedance
Impedance (
Ohm
)
Frequency (MHz)
230 V / SEC2 400 V / A6 400 V / SEC2 400 V / A7 400 V / X 400 V / H-F-16 400 V / B18-IH4 400 V / Z-E12 400 V / A5-I1 400 V / W
PDUN Thales Hengelo
0.25 uF8 uF
50 uH
1 kΩ
ToPower
SourceTo EUT
To 50 Ω terminationor 50 Ω input ofmeasurementreceiver
Signal outputport
5 Ω
Line impedance stabilisation network
Capacitive
Indu
ctive
Resistive
Frequency (f)
Imp
ed
an
ce (Ω
)
Lumped element circuit Behavior model
Curr
ent
Time
Curr
ent
Frequency
Lumped element circuit Behavior model
Curr
ent
Time
Curr
ent
Frequency
4 Equipment behavior
0,00 0,01 0,02-400
-300
-200
-100
0
100
200
300
400
Curre
nt(A
)
Voltage
Measured
current
Simulated
current
Time (s)
Volta
ge
(V
)
-0,4
-0,3
-0,2
-0,1
0,0
0,1
0,2
0,3
0,4
CDCVAC
+
-
IAC
ZIn
D1
D3
D2
D4
ZLoad
CFL
0,00 0,01 0,02-400
-300
-200
-100
0
100
200
300
400
Curre
nt(A
)
Voltage Measured
current
Simulated
current
Time
(s)
Volta
ge
(V)
-4
-3
-2
-1
0
1
2
3
4
C1
D1
D3
D2
D4
ZLoadCDC
D5
VDC
+
-
VPulse
+
-
IVertical
IHorizontal
Maxhold
+
-Low pass
filter
Prototypecurrent waveform C
urr
ent
Time
VREF
VDC
VPulse
VError
A1
A2
A3
VPFC
1-G
0≤G≤1
VAC
+
-
IAC
CLine
Curr
ent
Time-
PC supplyParameterizationRG
UDUT
+
-
LG
UG
IDUT
DUT
Gray box models:commonly found
components+
measurements @ PDUN interface
5 Conclusion