![]() This information will be useful if you want to make sure you are getting the best equipment for your needs. Here are five data-backed ways VFDs damage motors as well as some likely solutions. ![]() ![]() Load-side issues tend to be more difficult to cover with “catch-all” solutions like filters. To help meet these requirements, qualified systems integrators can add harmonic mitigation systems like passive harmonic filters, higher-pulse VFDs and active harmonic filters.Įven if you have a well-written specification that manages VFD created harmonics, you may not have the proper protections in place for the load-side issues VFDs can create. Utility companies manage harmonics through a standard known as IEEE-519. Unless you want the utility company at your door, you’re going to need a plan to solve these issues. In addition, VFDs create harmonics that pollute the power supply. In some cases, motor manufacturers void warranties due to VFD-related failures. For example, some types of bearing failures are attributed to VFD operation, and motor manufactures won’t cover the repair costs in the event of a failure. However, improperly configured drives cause immediate and long-term problems that include very large motor repair bills. They also save money and conserve energy. VFDs are used to start and control the operating speed of electric motors. ![]()
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