Comsys – Perfecting Power

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ADF Power Tuning helps you:

lower your energy costs optimize space reduce hassle and avoid downtime

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Power quality: the electrical network's or the grid's ability to supply a clean and stable power supply

High power quality ideally creates a perfect power supply that is always available, has a pure noise-free, sinusoidal wave shape, and is always within voltage and frequency tolerances.

Harmonic Compensation

With increasing and varying energy demands from various industrial processes, many loads regularly impose disturbances on the grid, making deviations from ideal conditions a frequent occurrence in many heavy industries. This is known as poor power quality.

Power Quality Units and Definitions

EntityUnitDescription
S kVA Apparent power. Given in kVA.
Q kVAr Reactive power. Fundamental only. Given in kVAr.
P kW Active power. Fundamental only. Given in kW.
Cos φ - Power factor. Fundamental only.
I A RMS Total current, including harmonics.
Iharm A RMS Total current distortion in A RMS
ITHD % Total Current Harmonic Distortion. Given as a percentage (%).
V V Voltage. Given in RMS.
Vunb % Voltage unbalance. Given as a percentage (%).
VTHD % Total Voltage Harmonic Distortion. Given as a percentage (%).
Pst - Flicker, short term (10 min).
Plt - Flicker, long term (2 hours).

Poor power quality and how to avoid it

The power within any grid is usually flawed to some extent. The result? Equipment underperformance, breakdowns, and energy losses—just to name a few issues!

Equipment malfunction

The seven most common poor power quality problems

reactive power

Reactive power: The phase angle between the current and voltage waveforms in an AC system. Used to develop magnetic field in motors, causes low power factor.

harmonics

Harmonics: Multiples of the supply frequency, i.e. the fifth harmonic would be 250 Hz if the supply frequency is 50 Hz. Caused by e.g. power electronic loads such as variable speed drives and UPS systems.

network unbalance

Network unbalance: Different line voltages. Caused by single-phase loads, phase-to-phase loads and unbalanced three-phase loads like welding equipment.

transients

Transients: Rapid change in the sine wave that occurs in both voltage and current waveforms. Caused by switching devices, start- and stop of high power equipment.

voltage variations

Voltage variations: Includes dips, sags, swells, brown-outs. The line voltage is higher or lower than the nominal voltage for a shorter period. Caused by e.g. network faults, switching of capacitive loads, and excessive loading.

flicker

Flicker: Random or repetitive variations in the voltage. Caused by e.g. mills, EAF operation (arc furnaces), welding equipment and shredders.

oscillations

Oscillations (resonances): The flow of electrical energy, e.g. between the magnetic field of an inductor and the electric field of a capacitor, changes direction periodically.

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You may be facing poor power quality if you experience several of the following symptoms:

  • Reduced production speed
  • Increased energy consumption
  • Fees for reactive power consumption
  • Stalled production
  • Damaged or malfunctioning equipment
  • Idling personnel, stalled production
  • Decreased equipment lifetime
  • Loss of data

In addition to the direct impacts above, poor power quality often negatively impacts business costs. Such as with:

  • Rework
  • Increasing start-up costs
  • Postponed revenues
  • Reduced cash flow
  • Poor reputation among customers
  • Loss of market share

What are you Paying for Poor Power Quality?

Improving power quality reduces risk, raises throughput, decreases the cost of doing business, and improves your bottom line.

For support with making a decision for your facility, don’t hesitate to contact us.

The best solution to poor power quality

ADF Power Tuning products eliminate common electrical behaviors that contribute to poor power quality. By using a highly dynamic, digitally controlled compensation and filtering approach, ADF Power Tuning restores the current waveform instantaneously, lowers the current flow, and fully compensates changes in load or installation conditions at all times.

For more information about how we tune power, read here.

Harmonic Compensation

  • New application note available

    Information
    13 May 2019
    Abstract - This application note describes the possibilities to improve multi-pulse drives by applying relatively...
  • Comsys presents a new and improved look

    Information
    07 May 2019
    LUND, SWEDEN, 2019-05-08 Since its start 18 years ago, Comsys has been a pioneer within the field of power quality,...

CASE STORIES FROM AROUND THE GLOBE

ADF Power Tuning currently supports multiple energy intensive industries around the globe. Browse through our collection of case stories that shows how various applications can benefit from our active filter technology!

  • Case Story:  Polyethylene Blown Film, Kotoriba

    Case Story: Polyethylene Blown Film, Kotoriba

    Croatia Industry: Packaging End customer: Muraplast Local partner: Automatika i procesi Timeline: Nov 2017 Background MURAPLAST is the...
  • Case Story:  Gold Mining, Kalgoorlie

    Case Story: Gold Mining, Kalgoorlie

    Australia Industry: Mining Local Partner: Toshiba International Corporation Timeline: In operation since 2017 Background A...
  • Case Story: Unilin

    Case Story: Unilin

    Belgium Industry: ManufacturingCustomer: UNILIN Flooring (Mohawk Group)Location: Wielsbeke, BelgiumTimeline: 2008...
  • Case Story: Live Fish Carrier

    Case Story: Live Fish Carrier

    Norway Industry: Marine Customer: Fitjar Mekaniske Verksted AS Vessel name: Seihav Background Seihav is a Live Fish Carrier constructed and...
  • Case story: Mercedes-Benz factory

    Case story: Mercedes-Benz factory

    Beijing, China Industry: Automotive Partner: ZYD, China Customer: Mercedes-Benz Timeline: 2016-2017, ongoing Background The...
  • Case Story: Jack-up drilling platform

    Case Story: Jack-up drilling platform

    South China Sea Industry: Offshore Oil and Gas Rig name: Tam Dao 03 Project Partner: Danfoss Norway Customer: Vietsovpetro...