A master thesis from Aalborg University
Optimization and Modeling of Transient of a Parallel Multiple Variable-Speed Water Pump System
Author(s)
Term
4. Term
Publication year
2019
Submitted on
2019-05-31
Pages
75 pages
Abstract
The project is aimed towards improvement of efficiency in multiple water pump systems. The problem is defined as lack of proper optimization algorithms in water pump systems worldwide, which affects power consumption, environment and water loss. Three methods are proposed as possible solutions to the problem. The first method is an efficiency optimization algorithm which was previously developed with faulty results. The method is re-implemented with improvements to the calculation process and accompanying data and tested on a real life water pump platform. Over and under-pressuring during transitions in system are identified as one of the contributors to the problem. Experimental data is gathered, showing system's products' change as operating conditions - pumps in action, input speed and choke valve percentage - change over time. A decoupling method is then designed based on similar work, which attempts to remove coupling between the pumps' pressures and reduce spikes in head during transitions. Another method is designed from scratch, creating a model of pump system using a sum of two transfer functions to represent each pumps' performance. The two methods are then tested in offline simulations. The observed results are evaluated and a conclusion is drawn.
Keywords
Documents
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