Low harmonic content
Our ultra-low harmonic drive produces exceptionally low harmonic content and exceeds requirements set by low harmonic standards. Compared to a conventional drive, the harmonic content is reduced by up to 97%. The total harmonic current distortion is typically 3%. With a passive filter the typical total harmonic distortion is between 5 to 10%.
Harmonic content reduction up to | Harmonic distortion typically |
 |
Simple and cost-efficient installation
The compact drive features built-in harmonics mitigation. This includes an active supply unit and a low harmonic line filter. As there is no need for external filters, multi-pulse arrangements or special transformers, the simple installation offers significant space, time and cost savings.
As there is less risk of overheating with lower harmonic currents, there is no need to over-dimension equipment such as transformers and cables.
Output voltage stabilization - secured operation and optimized dimensioning
The drive’s active supply unit can boost the output voltage to enable full motor voltage, even when the supply voltage is below nominal. This ensures reliable operation in weak networks.
This voltage boost capability can also be utilized to overcome voltage drops caused by long supply or motor cables. Therefore there is no need to over-dimension the motor or supply transformer due to long cables.
The possibility to stabilize the output voltage of an ultra-low harmonic drive is an advantage compared to passive filter solutions. At nominal loads with a passive filter there is typically a 5% voltage drop. On partial loads on the other hand the voltage over the passive filter can rise by up to 10%, creating the possibility of an overvoltage fault occurring.
Efficient energy utilization
Ultra-low harmonic drives achieve a unity power factor, indicating that electrical energy is being used efficiently.
The drive offers the possibility for network power factor correction in order to compensate for the low power factors of equipment connected to the same network. It can help to avoid penalty charges set by electrical utilities for poor power factors.
Lower harmonics and full motor voltage at all times mean reduced system losses and better overall system efficiency.
For all industries and applications
Our ACS880 ultra-low harmonic drives are customized to meet the precise needs of most industries, such as the oil and gas, chemical, pulp and paper, food and beverage, rubber and plastics, marine, metals and mining industries.
Industry specific ultra-low harmonic drives ACH580 and ACQ580 are available for the HVAC and water industries.