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Press Release16 November 2017Digital Factory Nuremberg
New reluctance control license enables sensorless motor control down to standstill
Firmware 4.8 enables Sinamics S120 converters to operate with synchronous reluctance motors
System operation with or without position sensor using new Sinamics reluctance control license
Durable in any operating environment due to field-oriented vector control
High energy efficiency even at low speeds
Firmware version 4.8 allows Simotics synchronous reluctance motors to also be operated with Sinamics S120 converters, enabling them to benefit from the complex functionalities of the modular S120 product portfolio. The new Sinamics reluctance control license used in combination with the Sinamics Booksize Modules means that precise drive control down to a complete standstill is now possible with and without a position sensor. This applies both for motor and generator operation. Field-oriented vector control across the whole of the operating range makes for a tangibly more robust drive system. Unlike U/f-based methods, for instance, any possibility of motor stalling in the event of load jumps is excluded. Sensorless control also enhances the energy efficiency of the drive, as even in the low speed range it allows the achievement of low values normally only possible using a sensor.
Firmware 4.8 enables Sinamics S120 converters to operate with synchronous reluctance motors
System operation with or without position sensor using new Sinamics reluctance control license
Durable in any operating environment due to field-oriented vector control
High energy efficiency even at low speeds
Firmware version 4.8 allows Simotics synchronous reluctance motors to also be operated with Sinamics S120 converters, enabling them to benefit from the complex functionalities of the modular S120 product portfolio. The new Sinamics reluctance control license used in combination with the Sinamics Booksize Modules means that precise drive control down to a complete standstill is now possible with and without a position sensor. This applies both for motor and generator operation. Field-oriented vector control across the whole of the operating range makes for a tangibly more robust drive system. Unlike U/f-based methods, for instance, any possibility of motor stalling in the event of load jumps is excluded. Sensorless control also enhances the energy efficiency of the drive, as even in the low speed range it allows the achievement of low values normally only possible using a sensor.
The new solution is particularly suited for applications calling for a high level of accuracy, such as servo pumps requiring precise operation right from standstill under high load. As the adjustment range is generally reduced to 1:10 with sensorless control, a sensor would normally be required in such cases. The new functionality is technically implemented using special test pulses which are fed into the motor at low speeds, allowing the motor position to be determined even without inducing a voltage capable of being evaluated at the motor terminals.
Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for 170 years. The company is active around the globe, focusing on the areas of electrification, automation and digitalization. One of the world's largest producers of energy-efficient, resource-saving technologies, Siemens is a leading supplier of efficient power generation and 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 2017, which ended on September 30, 2017, Siemens generated revenue of €83.0 billion and net income of €6.2 billion. At the end of September 2017, the company had around 372,000 employees worldwide. Further information is available on the Internet at www.siemens.com.
