Synchronous reluctance geared motor

Up with performance and efficiency

With the same stator length as the four-pole standard motor series of efficiency class IE2, the series of synchronous reluctance motors BSR from Bonfiglioli achieves efficiency class IE4 or, alternatively, double the output based on efficiency class IE2 with the same motor volume.

BSR is the name of the new series of synchronous reluctance motors from drive specialist Bonfiglioli and is available in six sizes from IEC71 to IEC132 and in power ratings from 0.37 to 18.5 kilowatts. (Image: Bonfiglioli)

These are extraordinary improvements that bring advantages in the application. Accordingly, Bonfiglioli also offers two packages consisting of motor and inverter: A "High Efficiency" package to IE4 standard and a "High-Power-Density" package with full dynamics and high-precision speed. And all this with sensorless operation. The BSR motor is available in six sizes from IEC71 to IEC132 and in power ratings from 0.37 to 18.5 kilowatts. The "High Efficiency" package to IE4 standard enables an existing machine to be upgraded to increase efficiency: with the same size, the new motor in combination with optimized drive software enables a high increase in efficiency.

The "High-Power-Density" package in conjunction with the gearbox range offers advantages in terms of the required installation space: With the same output power, the BSR synchronous reluctance motors require significantly less space. The drive is shorter and, including the terminal box, not as high - depending on the application, the advantage can be up to two sizes. This results in more geometric freedom for the machine designer. The new vector control (FOC Field Oriented Control) of the Active Cube frequency inverters from Bonfiglioli enables precise and dynamic speed and torque control, especially for applications that require variable loads and inertia.

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Bonfiglioli's BSR synchronous reluctance motors have no windings and no magnets; therefore they have no induced current and lower rotor losses compared to standard motors. This in turn results in lower heat dissipation from the machine, a longer service life and greater reliability. The drive system consisting of a synchronous reluctance geared motor with Active Cube frequency inverter is used in pumps, fans, mixers and dosing units, for example. pb

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