Avoiding harmonics in HVAC and electrical systems

摘要

While power electronics have created considerable energy savings, they can distort the quality of electrical power delivered through the building they serve, reduc ing the effectiveness and life span of the power electronics contained within that building. This article focuses on the largest share of power electronic loads in today's buildings, variable frequency drives (VFDs), which are a form of power electronics used to vary the speed of the motor they serve.