| Abstract |
The conventional design of pump drive systems usually focuses on their mechanical parameters. In this paper, this design is reconsidered aiming at an improved energy efficiency. To this end, it is essential to consider the entire electromechanical system – beginning with the fluid to be pumped and ending with the electrical power supply. All these system components are modeled in order to estimate the losses at various operating points – especially in partial load conditions. These models are based on freely available data-sheet parameters. Hence, the criteria presented in this paper can be applied
directly in an early stage of the design process in order to find suitable drive configurations. Regarding energy efficiency, pump drive systems can be classified with respect to two fundamental design categories: the
control method such as throttle or speed control and the drive configuration such as single or cascaded pump drives. In
order to realize the full energy saving potential, this paper presents a guide for choosing an appropriate design option.
This guide includes a set of design criteria and a selection diagram that enables fast concept decisions for energy efficient pump drives. |
