Integration of synchronous reluctance motors and dedicated frequency inverters

Bonfiglioli is constantly developing solutions for industrial motion control to increase the machine performance and its competitiveness, high control performance and high energy efficiency. Nowadays, this last aspect becomes increasingly relevant, both because of environmental considerations and for cost savings related to the plant life cycle.

To address these requirements, Bonfiglioli has developed a Power Drive System in its research centers; this system combines BSR series reluctance synchronous motors with Active Cube frequency inverters (in the picture) with dedicated sensorless vector control. The motor is compatible with the wide range of Bonfiglioli industrial geared units. This solution is available in two packages, with optimized compactness for small spaces or operation costs reduction respectively, both with excellent efficiency levels (Class IE4 for the motor, and class IES2 for the Power Drive System, according to the actual Ecodesign Standard EN 61800-9-2). In comparison to conventional motor-frequency inverter solutions, the Bonfiglioli Power Drive System allows minimizing the overall energy consumption in the different operation points. The motor control is realized with a complete mathematical characterization of the motor, which also ensures a simple and reliable system configuration.
The full package integration and the wide range of available software control strategies bring additional performance benefits: accurate sensorless speed control, stable torque control, high torque even at low or zero speed and excellent overloading characteristics. Overall, this solution is ideal for a wide range of industrial applications; it can be fully integrated in Industry 4.0 plants.