Active Harmonic Filter, 3phase 3wire

Outline

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 conductors
• Excitation of network resonance
• Damage to sensitive equipment
• Overheating of transformer, motor and cables
• Frequent tripping of circuit breakers

Features

Intelligent Power Quanlity FIlter(IPF)

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

• Patent No.0459000 as Three Phase fourwire active power filter control device
• Meet IEEE Std.519-1992
• Solve Power Quality Problems
• Parallel connection allows easy retrofit for large system
• Curtailment of maintenance fee

Application

• Industrial, IPF3 (3P3W ) : 70~ 2000A, 380V ~ 600 V, 50Hz/60Hz
• Commercial, IPF4 (3P4W) : 70~ 1000A, 380V ~ 440 V, 50Hz/60Hz

Industrial(IPF3)

• Selectable Harmonic compensation
• Intelligent Harmonic current Prediction
• Filters up to 50th Harmonic
• Harmonic attenuation factor around 98%.
• Easy commissioning
• Reactive power compensation
• Phase/Load balancing
• Power factor control
• Does not require any special Current Transformers
• 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

Operation of IPF

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

IPF Manager of IPF

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 filter behavior and components
• Measurements of system variables
• Event Log for fault situation
• Network status monitoring
• Protection from Malfunctioning
• Parameter settings and operator settings
• Waveforms in graphical display

Man Machine Interface of IPF

• Remote based Control from PC (Personal Computer)
• Provides Windows-based graphical user interface
• Has full functionality
• Same menu structure as key pad interface with some additional features

Dimensions fo IPF