An Axial Flux Motor Centrifugal Pump, star ng with a fluid-dynamically op mized impeller, using a larger wet circulator

Compact Bearing System with DLC Diamont-Like-Carbon Plasma Coa ng

Down-size motor, leading to lower weight, losses, cost

Pump scalable (50 W to 1000 W)

Possibility to u lize in mobile applica ons (cf. electric vehicles)

Different Inlet Adapters / Support de Roulements

Yasa Axial Flux Water Pump

Projekt Programu Operacyjnego Innowacyjna Gospodarka 2007-2013 Działanie 4.3. "Kredyt Technologiczny" współfinansowany ze środków Europejskiego Funduszu Regionalnego.

2

Impeller design: CFD using PumpLinx by Simerics

The graph on the right contains information about the efficiency of the pump at different flow rates.

The Pump achieves its best efficiency point (volumetric) at 3000 rpm, pumping 20 m3/h.

Performance curve of the Yasa Pump

CFD simulation of different impeller and volute geometries

3

CFD Simulation of the water flow in the pump

General parameters of the pump

4

Electric Motor Design: FEMAG / SmartFEM

·Modification of radial template to accomodate axial flux design·Trained by Dr. Hans, one of the SmartFEM authors

5

Electric Motor Design: FEMAG / SmartFEM

Loss calculation refers to peak power at 4000 rpm Motor parameters

6

Control system

The electronic control board includes:

- An Integrated Power Hybrid IC Motor Drive,- 8 bits programmable microcontroller for the three phase motor control based on the signals from the hall sensors.

In addition to the functions of motor control electronics allows:

- Reading temperature of the power circuit,- Two modi of operating the pump – speed or differential pressure sensor driven- Reading temperature from the temperature sensor of pumping fluid 0-5 VDC,- Two current/voltage inputs for the pressure transducers (for differential pressure sensing)- Integrated LCD and menu buttons on board,- EUSART port.

7

Schematic of Pump - Inlet Adapter: Inline – Axial

8

CAD models of key components

9

CAD models of key components

10

Different Inlet Adapters: Inline - Radial

11

Different Inlet Adapters possible: U-Shaped / 90°

12

Overall dimensions

Total weight of the pump:approximately 2.5 kg

Total weight of motor magnets:approximately 31 g

Total weight of bearing magnets:approximately 28g

Rotor stator air gap will be 1.2 – 1.8 mm

13

Pump Photos

14

Pump Photos

15

IP Status

Summary of Key Characteristics

·50 to 700 W Axial Flux Motor Pump, wet running·Up to 35 m3 /h flow·Peak hydraulic efficiency 85%·Peak motor efficiency approx. 90%·Total mass of rotor magnets (NdFeB): 31 g·Total mass of bearing magnets: 45 g·Total mass of copper used: 95 g·Compact length & diameter of approx. 200mm·Total weight of pump with electronics: approx. 2.5 kg·Custom-built electronics with various control functions·Touch-less axial and radial floating magnetic bearing