The affinity law describes the mathematical-physical relationships between power and speed in flow machines, such as fans and pumps, which have a quadratic characteristic curve. In concrete terms, this means that doubling the speed of a motor leads to a fourfold increase in power consumption. On the other hand, the reduction in speed therefore leads to lower power consumption, but this also reduces performance. Frequency inverters can precisely regulate the speed of the motor according to the current requirements of the system/application and thus also adjust the energy consumption. This process leads to a more efficient use of energy and a reduction in operating costs.
