Cp. Cho et Wp. Krol, FEASIBILITY STUDY OF A NOVEL INTEGRATED ELECTRIC MOTOR PUMP FOR UNDERWATER APPLICATIONS/, Naval engineers journal, 108(3), 1996, pp. 233-240
This paper presents the results of a feasibility study of a novel elec
tric motor/pump system that combines an axial field, permanent magnet
motor with a centrifugal pump. This system, unique because the motor p
ermanent magnet (PM) rotor and pump impeller vanes are a single unit,
provides a compact, reliable, low-noise, and high-power-density electr
ically driven centrifugal pump suitable for underwater applications in
which minimizing noise, vibration, and volume are major design object
ives. Performance tradeoffs for the electromagnetic analysis were made
by two- and three-dimensional finite element analysis (FEA) models in
conjunction with a lumped parameter magnetic circuit model. The study
results reveal that theoretically the new integrated electric motor/p
ump concept (1) provides up to seventy-three percent electromagnetic e
fficiency with a significantly reduced volume and weight and (2) subst
antially increases the power density and reliability with the potentia
l for quiet and high performance. This study is also evidence that new
concepts can be explored with expanded computer modeling and simulati
on techniques.