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A Simulink based model for a centrifugal pump power estimation is proposed. The new model consists of the pump, pipeline, pressure regulation valve, fluid reservoir and metering equipment. The model is developed to provide the possibility of power calculation during both throttling and speed control. To evaluate the model, a series of tests have been conducted. Tests proved that the designed model...
The paper focuses on the flexible management of the centrifugal pumps with variable speed drives primarily used for water circulation in closed processes, such as heating, cooling, and air conditioning. The goal of the study is to implement the mutual pressure and flow control, which provides the minimal electricity consumption along with the speed range enlargement. To resolve the problem, two methods...
A novel pressure control system based on a centrifugal pump Simulink model is proposed aiming to reduce energy consumption during pump operation. The system developed provides the possibility of power reduction during pressure maintenance with the help of mixed pressure control strategy. To evaluate the system, a series of tests have been conducted that proved that the designed system is more beneficial...
In this paper, the simulation environment is proposed that enables accurate full-scale investigation of the pressure adjustment for a centrifugal pump. The novel Matlab model is described, the pumping control procedure is explained, and the simulation results are assessed with the help of an experimental pumping test bench. Basing on thorough inspection of the developed software, the offered toolbox...
Centrifugal pumping systems are the common hydraulic devices mainly driven by electric drives. Their efficiency varies significantly with the change of working point location that depends on the positions of the performance and system curves. This paper is devoted to the study of the pumping system efficiency at throttling and speed control. A model-based calculation method for the single-drive centrifugal...
A novel head and pressure predictive control approach is offered for the centrifugal multi-pump stations equipped with variable speed drives and programmable logical controllers. The pre-defined tabularized data are used where the efficiency estimates for different number of pumps operated at various speeds are collected. Thanks to accounting the motor drive power losses, maximal system efficiency...
The paper focuses on the smart fluid adjustment of the centrifugal pumping station. The goal of the study is to provide the pressure management at minimal consumed energy. To solve the problem, the sensorless prediction method is proposed. The multi-motor variable speed drive has been designed and analyzed. A research is supported by experiments on the ABB Ebara CDX 120/12 pumping station fed by five...
A hardware-in-the-loop model of a centrifugal pump is proposed. The new simulator consists of the pump and pipeline imitators built on the basis of the variable speed drives connected via the programmable logical controller and Profibus communication components. The mathematical description of the flow maintenance represents a core of the simulation methodology. To study the system, a series of tests...
Parallel multi-pump single-drive pumping systems are widely used in water processing applications. Comparison of this type of systems to multi-pump multi-drive solutions is discussed. The drawbacks and advantages of both systems are identified. Recommendations on pumping system energy efficiency monitoring techniques which include sensorless estimation are proposed. Problem of trade-off between the...
A method of flow rate control and maintenance for a centrifugal pumping system is proposed. The flow rate control system based on PLC and additional peripheral components including Profibus adapter FPBA-01 and Profibus communication module CM572 DP has been developed and tested. To analyze the system, a series' of experiments was conducted. Experiments show that the designed system is quite flexible,...
Adjustment of working state of the pump in order to satisfy the changing demand and hence bringing the system outside of best efficiency region is a reason of occurrence of dimensioning and adjustment losses. This phenomena is more harmful in multi pump applications e.g. parallel pumping. Method to monitor and predict the location of working point using quite common processing equipment is proposed...
A hardware-in-the-loop (HIL) model of a vessel electric propulsion drive is proposed. The mathematical description of the vessel trust forces is explained. As well, the propulsion power and torque estimates are discussed within the broad spectre of their parameter changing. A case study is reported where some concrete parameters are applied in the above mathematical model to assess the particular...
A hardware-in-the-loop (HIL) model of a centrifugal pump is proposed. The HIL simulator consists of the pump and pipeline imitators built on the basis of the variable speed drives (VSD) connected via the programmable logical controller (PLC, and profibus communication components. The mathematical description of the pressure maintenance represents a core of the simulation methodology. To study the...
A remote environment proposed in the paper enables the study electrical drives via the Web. The active learning concept of the distance education and the set of Internet-based laboratory works open the possibility to learn Basic and Advanced Courses of Electrical Drive providing a lot of benefits for both the learners and the faculty. The remote labs for the bachelor and master students are presented...
This paper addresses performance improvement of the centrifugal pumps running in variable-speed applications. Focus is on the system operation in the best-efficiency region. The impact of various factors affecting the pumping efficiency in the single-pump and multi-pump environments is described. A method for the multi-pump drive predictive control is proposed.
The analysis of the promoted innovative setups and practices of educational systems revealed the necessity to develop an active learning approach. On-lecture assessment methods developed in the active learning context and introduced into Electronics, Power Electronics, and Electrical Drives promote ultimately students' progress increasing the quality of learning. To motivate students, specific self-assessment...
A method of taking characteristics of the pump motor drive using a hardware-in-the-loop simulation approach is described. The models with built-in hardware and software components of real equipment were developed. To study the drives of centrifugal pumps manufactured by ABB, their own control system was used whereas the pumping load has been replaced with the specially designed environment simulators...
This paper addresses approaches to improve the power consumption indexes of multi-pump systems. Focus on optimization of productivity, adjustment of the number of running pumps and starting-stopping criteria in multi-pump systems. Method of the productivity adjustment based on the reduction of motors starts-stops is proposed. The method includes prediction of the future state of the system and reduction...
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