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IPF4 - Intelligent Power Quality Filter 3Phase 4Wire (

harmonic filters

)
harmonic filters

Harmonic distortion and power Quality

The proliferation of nonlinear loads such as static power converters and arc furnaces results in variety of undesirable phenomena in the operation of power systems. The most important among these are harmonic contamination, increased reactive power demand and power system voltage fluctuations. Harmonic currents increase power systems losses, excessive heating in rotating machinery, can create significant interference with the power line communication. The harmonics are a growing problem for both electricity suppliers and consumers.

Problems cause by harmonics

Malfunction of precision control
Capacitor overloading and failures
High current in neutral conductorsl
Excitation of network resonancel
Damage to sensitive equipment
Overheating of transformer, motor and cables
Frequent tripping of circuit breakers

Intelligent Power Quality Filter (IPF)

PQ Tech offers a compact, cost-effective, and completely integrated system solution for the growing number of applications. The IPF offers the ability to eliminate the network harmonics from the supply source.

Patent No.0459000 as a Three Phase fourwire active power filter control device
CE No.F690501/SP-IMS000494 as active harmonic filter
Following IEEE Std.519-1992
Solution against Power Quality Problems
Parallel connection allowing easy retrofit for large systems
Curtailment of maintenance fee


70~1000A
220~480V
50/60Hz


Commercial
Selectable harmonic compensation
Zero sequence harmonic compensation
Neutral current compensatio
LCL-based filter configuration
Filtering up to 50th Harmonic
Harmonic attenuation factor is 98%
Reactive power compensation
Phase/Load balancing
Power factor control
User friendly Graphical User Interface with LCD
Remote-based control of MMI Interface with graphical-based environment
RS232 communication compatible
Fault and event logging in real-time
Advanced Modulation technology to reduce ultra-low harmonic distortion

To Compensate Load Harmonics supplied by a source, IPF is connected to grid system.

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Unfiltered Source Current

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Power Voltage. Current
Freq 59.968 Hz
P1 66.51 kW U1 224.62 V I1 320.39 A
P2 67.93 kW U2 230.95 V I2 322.34 A
P3 55.35 kW U3 229.24 V I3 263.56 A
Psum 0.1898 kW U4 15.99 V I4 223.69 A
S1 71.96 kVA THD-U1 14.00 % THD-I1 30.21 %
S2 74.45 kVA THD-U2 13.07 % THD-I2 34.22 %
S3 60.42 kVA THD-U3 11.93 % THD-I3 29.74 %
Ssum 0.2068 kVA THD-U4 99.07 % THD-I4 97.12 %
Q1 -27.48 kvar Upk+1 0.2809 V Ipk+1 0.5018 A
Q2 -30.46 kvar Upk+2 0.2890 V Ipk+2 0.5369 A
Q3 -24.24 kvar Upk+3 0.2900 V Ipk+3 0.4189 A
Qsum -0.0822 kvar Upk+4 0.0297 V Ipk+4 0.3529 A
PF1 -0.9242 Upk-1 -0.2802 V Ipk-1 -0.4962 A
PF2 -0.9125 Upk-2 -0.2876 V Ipk-2 -0.5279 A
PF3 -0.9160 Upk-3 -0.2886 V Ipk-3 -0.4158 A
PFsum -0.9176 Upk-4 -0.0286 V Ipk-4 -0.3487 A
Uave 228.27 V KF1 2.62
Uunb 0.95 % KF2 2.86
KF3 2.52
KF4 8.72
Iave 302.10 A
Iunb 6.10 %

Filter Running
Filtered Source Current

harmonic filters03

Power Voltage. Current
Freq 59.940 Hz
P1 67.18 kW U1 223.25 V I1 316.22 A
P2 69.33 kW U2 230.05 V I2 315.32 A
P3 56.17 kW U3 228.38 V I3 260.56 A
Psum 0.1927 kW U4 7.48 V I4 58.57 A
S1 70.59 kVA THD-U1 4.70 % THD-I1 0.77 %
S2 72.54 kVA THD-U2 4.66 % THD-I2 1.38 %
S3 59.51 kVA THD-U3 4.63 % THD-I3 1.30 %
Ssum 0.2026 kVA THD-U4 95.38 % THD-I4 6.99 %
Q1 -21.70 kvar Upk+1 0.2984 V Ipk+1 0.4464 A
Q2 -21.33 kvar Upk+2 0.3091 V Ipk+2 0.4439 A
Q3 -19.65 kvar Upk+3 0.3077 V Ipk+3 0.3707 A
Qsum -0.0627 kvarr Upk+4 0.0136 V Ipk+4 0.0904 A
PF1 -0.9516 Upk-1 -0.2981 V Ipk-1 -0.4481 A
PF2 -0.9558 Upk-2 -0.3075 V Ipk-2 -0.4493 A
PF3 -0.9439 Upk-3 -0.3071 V Ipk-3 -0.3710 A
PFsum -0.9508 Upk-4 -0.0126 V Ipk-4 -0.0873 A
Uave 227.23 V KF1 1.01
Uunb 0.94% KF2 1.02
KF3 1.02
KF4 1.22
Iave 297.36 A
Iunb 6.17 %

Operator can control and view the operation of IPF with user-friendly graphical interface on LCD of IPF Panel.

Keypad interface to configure IPF filter
Monitoring of filter behavior and components
Measurements of system variables
Event log recording
Network status monitoring
Protection from malfunction
Parameter settings and operator settings
Waveforms in graphical display

Remote control from PC (Personal Computer)
Windows-based graphical user interface
High functionality
Same menu structure as key pad interface with some additional features

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Dimensions of IPF

Type Rating
Current[A]
 
W
Outer Dimensions[mm]D  
H
IPF4 - ⌈⌈ 70 70 1050 800 2250
IPF4 - ⌈⌈ 100 100 1050 800 2250
IPF4 - ⌈⌈ 150 150 1050 800 2250
IPF4 - ⌈⌈ 200 200 1050 800 2250
IPF4 - ⌈⌈ 300 300 2100 800 2250
IPF4 - ⌈⌈ 400 400 2100 800 2250
IPF4 - ⌈⌈ 600 600 3150 800 2250

Note - Higher capacity can be available with parallel configuration dimensions that can be changed without notice.
⌈⌈ - Voltage ratings, ex : 380 V-38, 440 V- 44

 
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