ABB Low Harmonic Drives
Harmonic distortion may disturb or damage sensitive equipment connected to the same circuit of a variable speed drive. Any distorted voltage and current waveform that deviates from the ideal waveform presents the potential to harm electronic components, which can result in expensive repairs and production downtime. Non-linear loads connected to the electrical supply in industrial and commercial facilities insert harmonic distortion on the power distribution system.
A non-linear load application included solid state electric motor soft starts, variable speed drives, personal computers, electronic lighting, welding equipment and other power supplies that are not interrupted. Harmonic distortion can cause distribution transformers and supply cables to overheat; resulting in the breakdown of electrical insulation and failure; electronic display failure, circuit breaker tripping and other damage resulting in distorted readings by metering equipment.
Taking action to solve harmonic distortion provides many benefits beyond managing risk. Industries with high power consumption such as paper and pulp, metals, oil and gas refineries, cement and chemical processing, have the opportunity to optimize the power quality in these facilities by managing the disturbances and losses that are caused by harmonic distortion.
A Single Solution to Harmonic Distortion
Harmonic standards are becoming stricter and there is a growing demand for low harmonic drive solutions. The ABB ACS800-U31 variable speed drive offers an easy solution to the problem of harmonics. The solution itself is incorporated within the variable speed drive, eliminating the need for any additional filtering equipment or complicated large multiple pulse transformer installations.
The ABB ACS800-U31 eliminates low order harmonics with the active converter controlled with DTC technology and high order harmonics with an LCL line filter. The result is exceptionally low harmonic content within the network that exceeds the requirements made by IIEEE519 at the drive input terminals. Even on the weakest AC line network the ACS800-U31 can be a solution to harmonic distortion. The ABB ACS800-U31 provides a simple, compact and complete solution to meet power quality standards.
The ABB ACS800-U31 doesn’t require a dedicated multiple pulse transformer so the installation time is significantly reduced with regards to cabling and wiring processes. The ABB ACS800-U31 also requires less physical floor space which also makes ease of installation. The ABB ACS800-U31 always operates with unity power factor of 1 and is impervious to alternating current line voltage imbalances up to and over 3%. The system efficiency also is better than 12 and 18 pulse drive solutions since there isn’t a phase shifting transformer required for applications.
The ACS800-U31 is a ultra low harmonic wall mounted drive and is available in power ratings from 208-240 voltage from 10 horsepower through 60 horsepower; and 380-480 voltage from 20 horsepower through 125 horsepower.
To learn more about ABB ACS800-U31 low harmonic drives, please visit the ABB Website.
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