Drives, along with
many other types of electronic equipment, can cause a phenomenon known as power
line harmonics. The better energy efficiency and performance advantages of
using drives to control pumps and blowers in the water industry far outweigh
the negative effects of harmonics. Even so, it is important to understand these
potential issues and the solutions that are available to mitigate their
troublesome effects. In addition, to save on costs, being able to mitigate
harmonics means you don’t need to install oversized generators or add expensive
external harmonic filters, which could be needed when using drives.