Experimental versus EPANET Simulation of Variable Speed Driven Pumps Operation

The control of variable speed pumps in series operation

This paper presents a simulation model for the operation of two series pumps, the second being driven with variable speed. Although this is not usual for this type of configuration that requires generally both pumps working at the same speed, it seems to be preferred in practice. The model was developed so that to be able to quickly check the efficiency variable speed drives based on real value...

Method of Evaluation of Efficiency Improvement Potential for District Heating Systems with Focus on Variable Speed Centrifugal Pumps

The goal of this research is the derivation of method for evaluation of efficiency improvement potential for district heating systems with focus on variable speed centrifugal pump. The effectiveness of the usage of the proportional pressure control is compared with the constant pressure control. This is why, energy calculation analyses have been realized for variable speed centrifugal pumps, an...

Torsional Mode Damping for Electrically Driven Gas Compression Trains in Extended Variable Speed Operation

The oil and gas industry has a growing demand for electrically driven trains operated at variable speeds. Variable frequency electrical drives enable increased operational flexibility and energy efficiency. This is of great importance in applications requiring high power, such as gas compression. Load commutated inverters (LCIs) are one of the most widespread technologies for driving large gas ...

Cost-effective design and operation of variable speed wind turbines

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Design and Simulation of Double Loop Control for Power Converter Fed Variable Speed DC Drive