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WQuattro Motors WEG Line-Start Permanent Magnet Motors

WQuattro Motors WEG Line-Start Permanent Magnet Motors. Permanent magnet. Flux barrier. Aluminium cage. Overview. Hybrid motor: induction + permanent magnet + reluctance. Example picture, not actual geometry. Developed lines of product. IEC 525V, 50Hz: Frames 80 to 132S

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WQuattro Motors WEG Line-Start Permanent Magnet Motors

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  1. WQuattro MotorsWEG Line-Start Permanent Magnet Motors

  2. Permanent magnet Flux barrier Aluminium cage Overview • Hybrid motor: induction + permanent magnet + reluctance Example picture, not actual geometry

  3. Developed lines of product • IEC 525V, 50Hz: Frames 80 to 132S 4 poles : 0.55 to 7.5kW 6 poles : 0.37 to 5.5kW • IEC 380V, 60Hz: Frames 80 to 132S 4 poles: 0.75 to 11kW 6 poles : 0.37 to 7.5kW • NEMA 460V, 60Hz: Frames 143 to 213 4 poles : 0.75 to 7.5kW 6 poles : 0.75 to 3.7kW • IEC 400V, 50Hz: Frames 80 to 132S 4 poles : 0.55 to 7.5kW 6 poles : 0.37 to 5.5kW

  4. Characteristics Higherefficiency in thesame frame size • Three-phase distributed winding in stator (identical to conventional induction motors). • Rotor with aluminum cage and internal high-energy permanent magnets. • Starts and accelerates directly connected to the mains, as an induction motor. • Operates at synchronous speed (invariant with load). • Same frame size of induction motor, for same power. WQuattro W22

  5. Advantages • Synchronous operation  no I²R losses in the aluminum cage. • Higher efficiency compared to Premium Efficiency induction motors  high energy savings. • Low bearing temperature  longer life and less maintenance. • No sensors  high reliability. • Interchangeability with existing installations. • No need for special protection relays. • Multi-motor operation  several motors in synchronism fed by the same inverter.

  6. Limitations • Limited synchronization capability with inertia  not suitable for all applications. • Care must be taken in the assembly and disassembly of the motor, due to magnets in the rotor, and special tools may be necessary for the IEC frame 132.

  7. Development tools (software) • SPEED software package (analytical and numerical analysis). WEG is member of the SPEED Consortium – SPEED Lab – Glasgow University.

  8. Development tools (software) • FLUX2D software (numerical analysis) from CEDRAT – France.

  9. PM x LSPM • PM (inverter-fed PM motor): • Have no cage in the rotor; • Needs a FOC (field oriented control) inverter and information about the rotor position at any instant (either from an encoder or a sensorless algorithm); • Cannot be directly connected to the mains, even for non-variable speed applications; • LSPM (line-start PM motor): • Have a cage in the rotor; • Can be directly connected to the mains; • Do not need an inverter to run in a non-variable speed application; • For variable-speed applications, can be driven by an inverter with scalar control algorithm.

  10. WQUATTRO MOTORS IEC 400V 50Hz 4 Poles

  11. WQUATTRO MOTORS IEC 400V 50Hz 4 Poles Efficiency level IE4

  12. WQUATTRO MOTORS IEC 400V 50Hz 6 Poles

  13. WQUATTRO MOTORS IEC 400V 50Hz 6 Poles Efficiency level IE4

  14. Thank you!Sebastião L. Nauslnau@weg.net

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