08 Nov 2016

Synchronous reluctance motors combined with high-performance converters

• Firmware V4.8 enables Sinamics S120 converters to operate with Simotics synchronous reluctance motors.
• For applications in general mechanical engineering such as winders, extruders and servo pumps
• Lower system costs and short pay-back time

​The new firmware version 4.8 allows Sinamics S120 high-performance low-voltage converters to be combined with Simotics synchronous reluctance motors. This connection is ideally suited for drive solutions in which the dynamic response of induction motors is no longer sufficient but the high performance of permanently excited synchronous motors would be excessive. Typical applications include winders, extruders or servo pumps. Control has also been optimized in terms of efficiency for generator operation, opening up additional scope for other regenerative applications. The modular system comprising Sinamics S120 low-voltage converters and Simotics synchronous reluctance motors enables customized high-performance machine concepts to be implemented with the utmost speed and flexibility in industrial machinery and plant engineering. The synchronous reluctance motors achieve this by offering optimized vector control, generator operation optimized in terms of energy efficiency and dynamic response, as well as safety features and technology functions. Profibus and Profinet interfaces enable integration into the Totally Integrated Automation landscape.

The system costs for reluctance motors are lower than is the case with permanently excited synchronous or induction motors. In the part-load range, for instance, a drive system with reluctance motor is far more favorable in terms of energy usage than an induction motor. This enables a return on investment for high-performance low-voltage converters and reluctance motors to be achieved in less than twelve months.
Reluctance motors offer a substantially higher efficiency level in the part-load range compared to induction motors with the same output. The synchronous principle means that the speed remains constant, and a sensorless vector control ensures optimum operating behavior. Both features enhance the controllability of the drive train. Ramp-up times are short thanks to the motor’s low inherent moment of inertia combined with optimized vector control. As regards torque jumps, the behavior is comparable to that of permanently excited synchronous motors, allowing rapid braking also in the event of safety-relevant applications.

Lower system costs and short pay-back time: Firmware V4.8 enables Sinamics S120 converters to operate with Simotics synchronous reluctance motors.

ENDS

 

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Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for more than 165 years. The company is active in more than 200 countries, focusing on the areas of electrification, automation and digitalisation. One of the world’s largest producers of energy-efficient, resource-saving technologies, Siemens is No.1 in offshore wind turbine construction, a leading supplier of gas and steam turbines for power generation, a major provider of power transmission solutions and a pioneer in infrastructure solutions as well as automation, drive and software solutions for industry. The company is also a leading provider of medical imaging equipment – such as computed tomography and magnetic resonance imaging systems – and a leader in laboratory diagnostics as well as clinical IT. In fiscal 2015, which ended on September 30, 2015, Siemens generated revenue of €75.6 billion and net income of €7.4 billion. At the end of September 2015, the company had around 348,000 employees worldwide. Further information is available on the internet at www.siemens.com


 

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