Performance evaluation of a high flow rate annular linear induction pump using a simple equivalent circuit model taking into account dynamic end effects

Abstract

ElectroMagnetic Induction Pumps are a relevant technical solution for the transportation of alkali metals in applications where safety and reliability are fundamental. Especially, Annular Linear Induction Pumps (ALIPs) are preferred when high flow rates are required. In the early stage design of an ALIP, simple analytical models are convenient to get an estimate of performances. Equivalent circuit models are often used to this purpose. Their accuracy has been found variable, depending on pumps configuration and operating conditions. To assess the relevance for high flow rate applications, circuit models are applied to the ALIP of PEMDyn facility, in CEA Cadarache research centre. The simplest equivalent circuit model for a LIM is tested. Then, a modification to account for dynamic end effects is added. Results are compared to experimental measurements. The correction for dynamic end effects allows a significant reduction of the relative error, especially for the range of highest flow rates.