Power Quality Converters

Energy Efficiency, process improvement and productivity enhancement are driving the need for use of VFDs (Variable frequency Drives) in all Industries from last two decades. Besides that, proliferation of air conditioning equipments, computers, fax and copying equipments, printers and other office equipments, fluorescent lighting and various electronic communications equipments are extensively used in commercial buildings leads to more contribution of non-linear loads as a percentage of overall electricity consumption.

These non-linear loads introduces Harmonics Currents having higher peaks, which could cause Transformers, motors and power cables overheating, nuisance tripping by fuses, Circuit Breakers and other protective devices since they are typically not rated for harmonically rich waveforms. In addition, the life span of many devices can be reduced by elevated temperature.

The Regulatory requirement which was earlier advisory will shortly expected to turn in to mandatory, necessary use for these devices will be

The instantaneous effects of Harmonics

• Disruption of Controllers used in electronics systems and can adversely affect thyristor switching due to displacement of the zero-crossing of the voltage wave.
• Vibration and audible noise in electrical machines like motors, reactors, transformers.
• Reduction in the available capacity of power systems.

The long term effects of Harmonics

• Capacitors heating and degradation of capacitance value.
• Input transformers heating due to additional losses.
• Heating of Busbars, Cables and Equipments.
• Thermal damage to Induction Motors and Generators.

VC-AHF Active Harmonics filters is the initiative by Veeral Controls as a Power Electronics OEM towards the mission of “Clean Grid”. We have specialised in harmonics mitigation objectives and therefore offering broad range of solutions for every demand in this field. We propose solutions which maximize the savings when balanced with the cost of the harmonic mitigation equipment to get a reasonable Return of Investment (ROI).

VC-AHF Active Harmonic Filters are the most reliable solutions for this Harmonics by their unique step less automatic correction technique for correcting the current harmonics in real time by injecting equal magnitude and opposite phase harmonic currents in the network to get “Clean Grid”.

The unique features of VC-AHF Active Harmonics filters are,

• Step less automatic adaption to load changes
• Suitable for all types and mixes of Non-linear Loads
• Ultra fast response of < Half Cycle
• Rapid injection of reactive current within 500uSec
• Selectable / programmable Harmonics and Power Factor
• Suitable for compliant to IEEE – 519 – 2008 standards for Grid Utility regulations

• Process Industries
• Steel Plants
• Automotive Industries
• Glass Industries
• Oil and Gas Platforms
• HVAC Applications
• Wind and Solar Platforms
• Railways and Metros
• Paper and Printing Industries