A dynamic compressor control is provided. The dynamic compressor control includes sensors to sense operating parameters of a compressor and a compressor analytic software package. The compressor analytic software package uses the sensed operating parameters of the compressor to generate key performance indicators. The key performance indicators are used to calculate process variables for the compressor. The dynamic compressor control uses the sensed operating parameters and the process variables calculated from the key performance indicators to provide operating alarms and/or shutdowns.

Method for controlling a compressor which drives a pneumatic tool, with a maximum allowed pressure (p_max) and an associated compressed air consumption (q_max). The method includes the step of regulating the operating pressure (p_compr) of the compressor, and: if the operating pressure (p_compr) is lower than p_max minus a value (Z), controlling the compressor such that the flow rate supplied by the compressor is not limited; and if the operating pressure (p_compr) is higher than or equal to p_max, controlling the compressor such that the flow rate supplied by the compressor does not exceed the compressed air consumption (q_max) at p_max; and if the operating pressure (p_compr) is higher than p_max minus the value (Z) and is lower than p_max, controlling the compressor such that the operating pressure (p_compr) remains lower than p_max.

The invention relates to a fluid pump that has an electric motor with a shaft and an impeller with an outer diameter, that is connected to the shaft for conjoint rotation. A maximum volumetric flow and a maximum pressure difference (dp) can be generated in the fluid pump by the rotating impeller. A characteristic index number (K) for the fluid pump is greater than 350 kW/m.sup.2. The index number (K) corresponds to the product of the maximum volumetric flow and the maximum pressure difference in the fluid pump divided by the square of the outer diameter of the impeller.